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<h1>GeoConstraint.cc</h1> </div>
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<div class="contents">
<a href="GeoConstraint_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00002"></a>00002 <span class="comment">// -*- mode: c++; c-basic-offset:4 -*-</span>
<a name="l00003"></a>00003
<a name="l00004"></a>00004 <span class="comment">// This file is part of libdap, A C++ implementation of the OPeNDAP Data</span>
<a name="l00005"></a>00005 <span class="comment">// Access Protocol.</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <span class="comment">// Copyright (c) 2006 OPeNDAP, Inc.</span>
<a name="l00008"></a>00008 <span class="comment">// Author: James Gallagher <jgallagher@opendap.org></span>
<a name="l00009"></a>00009 <span class="comment">//</span>
<a name="l00010"></a>00010 <span class="comment">// This library is free software; you can redistribute it and/or</span>
<a name="l00011"></a>00011 <span class="comment">// modify it under the terms of the GNU Lesser General Public</span>
<a name="l00012"></a>00012 <span class="comment">// License as published by the Free Software Foundation; either</span>
<a name="l00013"></a>00013 <span class="comment">// version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00014"></a>00014 <span class="comment">//</span>
<a name="l00015"></a>00015 <span class="comment">// This library is distributed in the hope that it will be useful,</span>
<a name="l00016"></a>00016 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00017"></a>00017 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00018"></a>00018 <span class="comment">// Lesser General Public License for more details.</span>
<a name="l00019"></a>00019 <span class="comment">//</span>
<a name="l00020"></a>00020 <span class="comment">// You should have received a copy of the GNU Lesser General Public</span>
<a name="l00021"></a>00021 <span class="comment">// License along with this library; if not, write to the Free Software</span>
<a name="l00022"></a>00022 <span class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
<a name="l00023"></a>00023 <span class="comment">//</span>
<a name="l00024"></a>00024 <span class="comment">// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="comment">// The Grid Selection Expression Clause class.</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="config_8h.html">config.h</a>"</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="keyword">static</span> <span class="keywordtype">char</span> <span class="keywordtype">id</span>[] <a class="code" href="config_8h.html#a05e109ec893d0b12023d5b0cf4f718c4">not_used</a> =
<a name="l00032"></a>00032 { <span class="stringliteral">"$Id: GeoConstraint.cc 23563 2010-09-14 17:43:32Z jimg $"</span>
<a name="l00033"></a>00033 };
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="preprocessor">#include <cstring></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <cmath></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include <iostream></span>
<a name="l00038"></a>00038 <span class="preprocessor">#include <sstream></span>
<a name="l00039"></a>00039 <span class="preprocessor">#include <algorithm></span> <span class="comment">// for find_if</span>
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="comment">//#define DODS_DEBUG</span>
<a name="l00042"></a>00042 <span class="comment">//#define DODS_DEBUG2</span>
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="preprocessor">#include "<a class="code" href="debug_8h.html">debug.h</a>"</span>
<a name="l00045"></a>00045 <span class="preprocessor">#include "<a class="code" href="dods-datatypes_8h.html">dods-datatypes.h</a>"</span>
<a name="l00046"></a>00046 <span class="preprocessor">#include "<a class="code" href="GeoConstraint_8h.html">GeoConstraint.h</a>"</span>
<a name="l00047"></a>00047 <span class="preprocessor">#include "<a class="code" href="Float64_8h.html">Float64.h</a>"</span>
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="preprocessor">#include "<a class="code" href="Error_8h.html">Error.h</a>"</span>
<a name="l00050"></a>00050 <span class="preprocessor">#include "<a class="code" href="InternalErr_8h.html">InternalErr.h</a>"</span>
<a name="l00051"></a>00051 <span class="preprocessor">#include "<a class="code" href="ce__functions_8h.html">ce_functions.h</a>"</span>
<a name="l00052"></a>00052 <span class="preprocessor">#include "<a class="code" href="util_8h.html">util.h</a>"</span>
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keyword">using namespace </span>std;
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="keyword">namespace </span>libdap {
<a name="l00057"></a>00057
<a name="l00062"></a>00062 <span class="keyword">class </span>is_prefix
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 <span class="keyword">private</span>:
<a name="l00065"></a>00065 <span class="keywordtype">string</span> s;
<a name="l00066"></a>00066 <span class="keyword">public</span>:
<a name="l00067"></a>00067 is_prefix(<span class="keyword">const</span> <span class="keywordtype">string</span> & in): s(in)
<a name="l00068"></a>00068 {}
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keywordtype">bool</span> operator()(<span class="keyword">const</span> <span class="keywordtype">string</span> & prefix)
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <span class="keywordflow">return</span> s.find(prefix) == 0;
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074 };
<a name="l00075"></a>00075
<a name="l00086"></a>00086 <span class="keywordtype">bool</span>
<a name="l00087"></a><a class="code" href="namespacelibdap.html#a2e899171229a834bd84b7ac3bead7e63">00087</a> <a class="code" href="namespacelibdap.html#a2e899171229a834bd84b7ac3bead7e63">unit_or_name_match</a>(set < string > units, set < string > names,
<a name="l00088"></a>00088 <span class="keyword">const</span> <span class="keywordtype">string</span> & var_units, <span class="keyword">const</span> <span class="keywordtype">string</span> & var_name)
<a name="l00089"></a>00089 {
<a name="l00090"></a>00090 <span class="keywordflow">return</span> (units.find(var_units) != units.end()
<a name="l00091"></a>00091 || find_if(names.begin(), names.end(),
<a name="l00092"></a>00092 is_prefix(var_name)) != names.end());
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00109"></a>00109 GeoConstraint::Notation
<a name="l00110"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#a05015b19dc58da44a8c401562a2b5c65">00110</a> GeoConstraint::categorize_notation(<span class="keyword">const</span> <span class="keywordtype">double</span> left,
<a name="l00111"></a>00111 <span class="keyword">const</span> <span class="keywordtype">double</span> right)<span class="keyword"> const</span>
<a name="l00112"></a>00112 <span class="keyword"></span>{
<a name="l00113"></a>00113 <span class="keywordflow">return</span> (left < 0 || right < 0) ? neg_pos : pos;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="comment">/* A private method to translate the longitude constraint from -180/179</span>
<a name="l00117"></a>00117 <span class="comment"> notation to 0/359 notation.</span>
<a name="l00118"></a>00118 <span class="comment"></span>
<a name="l00119"></a>00119 <span class="comment"> About the two notations:</span>
<a name="l00120"></a>00120 <span class="comment"> 0 180 360</span>
<a name="l00121"></a>00121 <span class="comment"> |---------------------------|-------------------------|</span>
<a name="l00122"></a>00122 <span class="comment"> 0 180,-180 0</span>
<a name="l00123"></a>00123 <span class="comment"></span>
<a name="l00124"></a>00124 <span class="comment"> so in the neg-pos notation (using the name I give it in this class) both</span>
<a name="l00125"></a>00125 <span class="comment"> 180 and -180 are the same longitude. And in the pos notation 0 and 360 are</span>
<a name="l00126"></a>00126 <span class="comment"> the same.</span>
<a name="l00127"></a>00127 <span class="comment"></span>
<a name="l00128"></a>00128 <span class="comment"> @param left Value-result parameter; the left side of the bounding box</span>
<a name="l00129"></a>00129 <span class="comment"> @parm right Value-result parameter; the right side of the bounding box */</span>
<a name="l00130"></a>00130 <span class="keywordtype">void</span>
<a name="l00131"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#adf09e62fff4bc76f2820e947d45f21bf">00131</a> GeoConstraint::transform_constraint_to_pos_notation(<span class="keywordtype">double</span> &left,
<a name="l00132"></a>00132 <span class="keywordtype">double</span> &right)<span class="keyword"> const</span>
<a name="l00133"></a>00133 <span class="keyword"></span>{
<a name="l00134"></a>00134 <span class="keywordflow">if</span> (left < 0)
<a name="l00135"></a>00135 left += 360 ;
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="keywordflow">if</span> (right < 0)
<a name="l00138"></a>00138 right += 360;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140
<a name="l00149"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#a6651f68d957189fe33cc81f2193b6ef6">00149</a> <span class="keywordtype">void</span> GeoConstraint::transform_longitude_to_pos_notation()
<a name="l00150"></a>00150 {
<a name="l00151"></a>00151 <span class="comment">// Assume earlier logic is correct (since the test is expensive)</span>
<a name="l00152"></a>00152 <span class="comment">// for each value, add 180</span>
<a name="l00153"></a>00153 <span class="comment">// Longitude could be represented using any of the numeric types</span>
<a name="l00154"></a>00154 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < d_lon_length; ++i)
<a name="l00155"></a>00155 <span class="keywordflow">if</span> (d_lon[i] < 0)
<a name="l00156"></a>00156 d_lon[i] += 360;
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158
<a name="l00168"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#aae44ab86b981a7543697ad8199094df7">00168</a> <span class="keywordtype">void</span> GeoConstraint::transform_longitude_to_neg_pos_notation()
<a name="l00169"></a>00169 {
<a name="l00170"></a>00170 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < d_lon_length; ++i)
<a name="l00171"></a>00171 <span class="keywordflow">if</span> (d_lon[i] > 180)
<a name="l00172"></a>00172 d_lon[i] -= 360;
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174
<a name="l00175"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#a9039ef1033b512b10034fd5f7c1a129f">00175</a> <span class="keywordtype">bool</span> GeoConstraint::is_bounding_box_valid(<span class="keyword">const</span> <span class="keywordtype">double</span> left, <span class="keyword">const</span> <span class="keywordtype">double</span> top,
<a name="l00176"></a>00176 <span class="keyword">const</span> <span class="keywordtype">double</span> right, <span class="keyword">const</span> <span class="keywordtype">double</span> bottom)<span class="keyword"> const</span>
<a name="l00177"></a>00177 <span class="keyword"></span>{
<a name="l00178"></a>00178 <span class="keywordflow">if</span> ((left < d_lon[0] && right < d_lon[0])
<a name="l00179"></a>00179 || (left > d_lon[d_lon_length-1] && right > d_lon[d_lon_length-1]))
<a name="l00180"></a>00180 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00181"></a>00181
<a name="l00182"></a>00182 <span class="keywordflow">if</span> (d_latitude_sense == normal) {
<a name="l00183"></a>00183 <span class="comment">// When sense is normal, the largest values are at the origin.</span>
<a name="l00184"></a>00184 <span class="keywordflow">if</span> ((top > d_lat[0] && bottom > d_lat[0])
<a name="l00185"></a>00185 || (top < d_lat[d_lat_length-1] && bottom < d_lat[d_lat_length-1]))
<a name="l00186"></a>00186 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188 <span class="keywordflow">else</span> {
<a name="l00189"></a>00189 <span class="keywordflow">if</span> ((top < d_lat[0] && bottom < d_lat[0])
<a name="l00190"></a>00190 || (top > d_lat[d_lat_length-1] && bottom > d_lat[d_lat_length-1]))
<a name="l00191"></a>00191 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196
<a name="l00207"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#ae8919739ddc3071a4b472d0234ca4300">00207</a> <span class="keywordtype">void</span> GeoConstraint::find_longitude_indeces(<span class="keywordtype">double</span> left, <span class="keywordtype">double</span> right,
<a name="l00208"></a>00208 <span class="keywordtype">int</span> &longitude_index_left, <span class="keywordtype">int</span> &longitude_index_right)<span class="keyword"> const</span>
<a name="l00209"></a>00209 <span class="keyword"></span>{
<a name="l00210"></a>00210 <span class="comment">// Use all values 'modulo 360' to take into account the cases where the</span>
<a name="l00211"></a>00211 <span class="comment">// constraint and/or the longitude vector are given using values greater</span>
<a name="l00212"></a>00212 <span class="comment">// than 360 (i.e., when 380 is used to mean 20).</span>
<a name="l00213"></a>00213 <span class="keywordtype">double</span> t_left = fmod(left, 360.0);
<a name="l00214"></a>00214 <span class="keywordtype">double</span> t_right = fmod(right, 360.0);
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <span class="comment">// Find the place where 'longitude starts.' That is, what value of the</span>
<a name="l00217"></a>00217 <span class="comment">// index 'i' corresponds to the smallest value of d_lon. Why we do this:</span>
<a name="l00218"></a>00218 <span class="comment">// Some data sources use offset longitude axes so that the 'seam' is</span>
<a name="l00219"></a>00219 <span class="comment">// shifted to a place other than the date line.</span>
<a name="l00220"></a>00220 <span class="keywordtype">int</span> i = 0;
<a name="l00221"></a>00221 <span class="keywordtype">int</span> lon_origin_index = 0;
<a name="l00222"></a>00222 <span class="keywordtype">double</span> smallest_lon = fmod(d_lon[0], 360.0);
<a name="l00223"></a>00223 <span class="keywordflow">while</span> (i < d_lon_length) {
<a name="l00224"></a>00224 <span class="keywordtype">double</span> curent_lon_value = fmod(d_lon[i], 360.0);
<a name="l00225"></a>00225 <span class="keywordflow">if</span> (smallest_lon > curent_lon_value) {
<a name="l00226"></a>00226 smallest_lon = curent_lon_value;
<a name="l00227"></a>00227 lon_origin_index = i;
<a name="l00228"></a>00228 }
<a name="l00229"></a>00229 ++i;
<a name="l00230"></a>00230 }
<a name="l00231"></a>00231
<a name="l00232"></a>00232 <a class="code" href="debug_8h.html#ac1f764c266c50f0050e33557004c914c">DBG2</a>(cerr << <span class="stringliteral">"lon_origin_index: "</span> << lon_origin_index << endl);
<a name="l00233"></a>00233
<a name="l00234"></a>00234 <span class="comment">// Scan from the index of the smallest value looking for the place where</span>
<a name="l00235"></a>00235 <span class="comment">// the value is greater than or equal to the left most point of the bounding</span>
<a name="l00236"></a>00236 <span class="comment">// box.</span>
<a name="l00237"></a>00237 i = lon_origin_index;
<a name="l00238"></a>00238 <span class="keywordflow">while</span> (fmod(d_lon[i], 360.0) < t_left) {
<a name="l00239"></a>00239 ++i;
<a name="l00240"></a>00240 i = i % d_lon_length;
<a name="l00241"></a>00241
<a name="l00242"></a>00242 <span class="comment">// If we cycle completely through all the values/indices, throw</span>
<a name="l00243"></a>00243 <span class="keywordflow">if</span> (i == lon_origin_index)
<a name="l00244"></a>00244 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"geogrid: Could not find an index for the longitude value '"</span> + <a class="code" href="namespacelibdap.html#a7c3f898946a0ae498f4ca830731cc474">double_to_string</a>(left) + <span class="stringliteral">"'"</span>);
<a name="l00245"></a>00245 }
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <span class="keywordflow">if</span> (fmod(d_lon[i], 360.0) == t_left)
<a name="l00248"></a>00248 longitude_index_left = i;
<a name="l00249"></a>00249 <span class="keywordflow">else</span>
<a name="l00250"></a>00250 longitude_index_left = (i - 1) > 0 ? i - 1 : 0;
<a name="l00251"></a>00251
<a name="l00252"></a>00252 <a class="code" href="debug_8h.html#ac1f764c266c50f0050e33557004c914c">DBG2</a>(cerr << <span class="stringliteral">"longitude_index_left: "</span> << longitude_index_left << endl);
<a name="l00253"></a>00253
<a name="l00254"></a>00254 <span class="comment">// Assume the vector is circular --> the largest value is next to the</span>
<a name="l00255"></a>00255 <span class="comment">// smallest.</span>
<a name="l00256"></a>00256 <span class="keywordtype">int</span> largest_lon_index = (lon_origin_index - 1 + d_lon_length) % d_lon_length;
<a name="l00257"></a>00257 i = largest_lon_index;
<a name="l00258"></a>00258 <span class="keywordflow">while</span> (fmod(d_lon[i], 360.0) > t_right) {
<a name="l00259"></a>00259 <span class="comment">// This is like modulus but for 'counting down'</span>
<a name="l00260"></a>00260 i = (i == 0) ? d_lon_length - 1 : i - 1;
<a name="l00261"></a>00261 <span class="keywordflow">if</span> (i == largest_lon_index)
<a name="l00262"></a>00262 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"geogrid: Could not find an index for the longitude value '"</span> + <a class="code" href="namespacelibdap.html#a7c3f898946a0ae498f4ca830731cc474">double_to_string</a>(right) + <span class="stringliteral">"'"</span>);
<a name="l00263"></a>00263 }
<a name="l00264"></a>00264
<a name="l00265"></a>00265 <span class="keywordflow">if</span> (fmod(d_lon[i], 360.0) == t_right)
<a name="l00266"></a>00266 longitude_index_right = i;
<a name="l00267"></a>00267 <span class="keywordflow">else</span>
<a name="l00268"></a>00268 longitude_index_right = (i + 1) < d_lon_length - 1 ? i + 1 : d_lon_length - 1;
<a name="l00269"></a>00269
<a name="l00270"></a>00270 <a class="code" href="debug_8h.html#ac1f764c266c50f0050e33557004c914c">DBG2</a>(cerr << <span class="stringliteral">"longitude_index_right: "</span> << longitude_index_right << endl);
<a name="l00271"></a>00271 }
<a name="l00272"></a>00272
<a name="l00285"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#a1a9145ad48fdeea6eb810521f836c843">00285</a> <span class="keywordtype">void</span> GeoConstraint::find_latitude_indeces(<span class="keywordtype">double</span> top, <span class="keywordtype">double</span> bottom,
<a name="l00286"></a>00286 <a class="code" href="classlibdap_1_1GeoConstraint.html#a2304140a3b6310c6ed8bce30ebdaed7b">LatitudeSense</a> sense,
<a name="l00287"></a>00287 <span class="keywordtype">int</span> &latitude_index_top,
<a name="l00288"></a>00288 <span class="keywordtype">int</span> &latitude_index_bottom)<span class="keyword"> const</span>
<a name="l00289"></a>00289 <span class="keyword"></span>{
<a name="l00290"></a>00290 <span class="keywordtype">int</span> i, j;
<a name="l00291"></a>00291
<a name="l00292"></a>00292 <span class="keywordflow">if</span> (sense == normal) {
<a name="l00293"></a>00293 i = 0;
<a name="l00294"></a>00294 <span class="keywordflow">while</span> (i < d_lat_length - 1 && top < d_lat[i])
<a name="l00295"></a>00295 ++i;
<a name="l00296"></a>00296
<a name="l00297"></a>00297 j = d_lat_length - 1;
<a name="l00298"></a>00298 <span class="keywordflow">while</span> (j > 0 && bottom > d_lat[j])
<a name="l00299"></a>00299 --j;
<a name="l00300"></a>00300
<a name="l00301"></a>00301 <span class="keywordflow">if</span> (d_lat[i] == top)
<a name="l00302"></a>00302 latitude_index_top = i;
<a name="l00303"></a>00303 <span class="keywordflow">else</span>
<a name="l00304"></a>00304 latitude_index_top = (i - 1) > 0 ? i - 1 : 0;
<a name="l00305"></a>00305
<a name="l00306"></a>00306 <span class="keywordflow">if</span> (d_lat[j] == bottom)
<a name="l00307"></a>00307 latitude_index_bottom = j;
<a name="l00308"></a>00308 <span class="keywordflow">else</span>
<a name="l00309"></a>00309 latitude_index_bottom =
<a name="l00310"></a>00310 (j + 1) < d_lat_length - 1 ? j + 1 : d_lat_length - 1;
<a name="l00311"></a>00311 }
<a name="l00312"></a>00312 <span class="keywordflow">else</span> {
<a name="l00313"></a>00313 i = d_lat_length - 1;
<a name="l00314"></a>00314 <span class="keywordflow">while</span> (i > 0 && d_lat[i] > top)
<a name="l00315"></a>00315 --i;
<a name="l00316"></a>00316
<a name="l00317"></a>00317 j = 0;
<a name="l00318"></a>00318 <span class="keywordflow">while</span> (j < d_lat_length - 1 && d_lat[j] < bottom)
<a name="l00319"></a>00319 ++j;
<a name="l00320"></a>00320
<a name="l00321"></a>00321 <span class="keywordflow">if</span> (d_lat[i] == top)
<a name="l00322"></a>00322 latitude_index_top = i;
<a name="l00323"></a>00323 <span class="keywordflow">else</span>
<a name="l00324"></a>00324 latitude_index_top = (i + 1) < d_lat_length - 1 ? i + 1 : d_lat_length - 1;
<a name="l00325"></a>00325
<a name="l00326"></a>00326 <span class="keywordflow">if</span> (d_lat[j] == bottom)
<a name="l00327"></a>00327 latitude_index_bottom = j;
<a name="l00328"></a>00328 <span class="keywordflow">else</span>
<a name="l00329"></a>00329 latitude_index_bottom = (j - 1) > 0 ? j - 1 : 0;
<a name="l00330"></a>00330 }
<a name="l00331"></a>00331 }
<a name="l00332"></a>00332
<a name="l00336"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#a1f0111c7077e67459f9e3b47161848a7">00336</a> <a class="code" href="classlibdap_1_1GeoConstraint.html#a2304140a3b6310c6ed8bce30ebdaed7b">GeoConstraint::LatitudeSense</a> GeoConstraint::categorize_latitude()<span class="keyword"> const</span>
<a name="l00337"></a>00337 <span class="keyword"></span>{
<a name="l00338"></a>00338 <span class="keywordflow">return</span> d_lat[0] >= d_lat[d_lat_length - 1] ? normal : inverted;
<a name="l00339"></a>00339 }
<a name="l00340"></a>00340
<a name="l00341"></a>00341 <span class="comment">// Use 'index' as the pivot point. Move the points behind index to the front of</span>
<a name="l00342"></a>00342 <span class="comment">// the vector and those points in front of and at index to the rear.</span>
<a name="l00343"></a>00343 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00344"></a>00344 swap_vector_ends(<span class="keywordtype">char</span> *dest, <span class="keywordtype">char</span> *src, <span class="keywordtype">int</span> len, <span class="keywordtype">int</span> index, <span class="keywordtype">int</span> elem_sz)
<a name="l00345"></a>00345 {
<a name="l00346"></a>00346 memcpy(dest, src + index * elem_sz, (len - index) * elem_sz);
<a name="l00347"></a>00347
<a name="l00348"></a>00348 memcpy(dest + (len - index) * elem_sz, src, index * elem_sz);
<a name="l00349"></a>00349 }
<a name="l00350"></a>00350
<a name="l00351"></a>00351 <span class="keyword">template</span><<span class="keyword">class</span> T>
<a name="l00352"></a>00352 <span class="keyword">static</span> <span class="keywordtype">void</span> transpose(std::vector<std::vector<T> > a,
<a name="l00353"></a>00353 std::vector<std::vector<T> > b, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height)
<a name="l00354"></a>00354 {
<a name="l00355"></a>00355 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < width; i++) {
<a name="l00356"></a>00356 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < height; j++) {
<a name="l00357"></a>00357 b[j][i] = a[i][j];
<a name="l00358"></a>00358 }
<a name="l00359"></a>00359 }
<a name="l00360"></a>00360 }
<a name="l00361"></a>00361
<a name="l00369"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#a681345f3c4b95ae95ce5b49bb8ff248a">00369</a> <span class="keywordtype">void</span> GeoConstraint::transpose_vector(<span class="keywordtype">double</span> *src, <span class="keyword">const</span> <span class="keywordtype">int</span> length)
<a name="l00370"></a>00370 {
<a name="l00371"></a>00371 <span class="keywordtype">double</span> *tmp = <span class="keyword">new</span> <span class="keywordtype">double</span>[length];
<a name="l00372"></a>00372
<a name="l00373"></a>00373 <span class="keywordtype">int</span> i = 0, j = length-1;
<a name="l00374"></a>00374 <span class="keywordflow">while</span> (i < length)
<a name="l00375"></a>00375 tmp[j--] = src[i++];
<a name="l00376"></a>00376
<a name="l00377"></a>00377 memcpy(src, tmp,length * <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l00378"></a>00378
<a name="l00379"></a>00379 <span class="keyword">delete</span>[] tmp;
<a name="l00380"></a>00380 }
<a name="l00381"></a>00381
<a name="l00382"></a>00382 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00383"></a>00383 count_size_except_latitude_and_longitude(<a class="code" href="classlibdap_1_1Array.html" title="A multidimensional array of identical data types.">Array</a> &a)
<a name="l00384"></a>00384 {
<a name="l00385"></a>00385 <span class="keywordflow">if</span> (a.<a class="code" href="classlibdap_1_1Array.html#a1e6b13c4a5d3e825df7ebae3a9dc300d">dim_end</a>() - a.<a class="code" href="classlibdap_1_1Array.html#ae6e6943cd895fa8dc1c58621ffad42a0">dim_begin</a>() <= 2) <span class="comment">// < 2 is really an error...</span>
<a name="l00386"></a>00386 <span class="keywordflow">return</span> 1;
<a name="l00387"></a>00387
<a name="l00388"></a>00388 <span class="keywordtype">int</span> size = 1;
<a name="l00389"></a>00389 <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1Array.html#a7a557c05085a83d1501dbfa249d3cc52">Array::Dim_iter</a> i = a.<a class="code" href="classlibdap_1_1Array.html#ae6e6943cd895fa8dc1c58621ffad42a0">dim_begin</a>(); (i + 2) != a.<a class="code" href="classlibdap_1_1Array.html#a1e6b13c4a5d3e825df7ebae3a9dc300d">dim_end</a>(); ++i)
<a name="l00390"></a>00390 size *= a.<a class="code" href="classlibdap_1_1Array.html#a8f29497af9c33c0d66939d5f9a16d92a" title="Returns the size of the dimension.">dimension_size</a>(i, <span class="keyword">true</span>);
<a name="l00391"></a>00391
<a name="l00392"></a>00392 <span class="keywordflow">return</span> size;
<a name="l00393"></a>00393 }
<a name="l00394"></a>00394
<a name="l00395"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#a74bb5010981355c8d688a2fd77613f80">00395</a> <span class="keywordtype">void</span> GeoConstraint::flip_latitude_within_array(<a class="code" href="classlibdap_1_1Array.html" title="A multidimensional array of identical data types.">Array</a> &a, <span class="keywordtype">int</span> lat_length,
<a name="l00396"></a>00396 <span class="keywordtype">int</span> lon_length)
<a name="l00397"></a>00397 {
<a name="l00398"></a>00398 <span class="keywordflow">if</span> (!d_array_data) {
<a name="l00399"></a>00399 a.<a class="code" href="classlibdap_1_1BaseType.html#a1da003c53f2e663223f603ab3fbd7c8e" title="Read data into a local buffer.">read</a>();
<a name="l00400"></a>00400 d_array_data = <span class="keyword">static_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(a.<a class="code" href="classlibdap_1_1Vector.html#a2803db526bd03df4beed106ee7dc6a4b" title="Get a copy of the data held by this variable. Read data from this variable&#39;s internal storage and...">value</a>());
<a name="l00401"></a>00401 d_array_data_size = a.<a class="code" href="classlibdap_1_1Vector.html#a2a3c2d3b4a1fb3e88ee8737c1a33320a" title="Returns the width of the data, in bytes.">width</a>(); <span class="comment">// Bytes not elements</span>
<a name="l00402"></a>00402 }
<a name="l00403"></a>00403
<a name="l00404"></a>00404 <span class="keywordtype">int</span> size = count_size_except_latitude_and_longitude(a);
<a name="l00405"></a>00405 <span class="keywordtype">char</span> *tmp_data = <span class="keyword">new</span> <span class="keywordtype">char</span>[d_array_data_size];
<a name="l00406"></a>00406 <span class="keywordtype">int</span> array_elem_size = a.<a class="code" href="classlibdap_1_1Vector.html#aa5ccb30d1f27ae587f35216b859feec7">var</a>()-><a class="code" href="classlibdap_1_1BaseType.html#a3058467f1e80a41f3cf1068ec9ec68ed" title="Returns the size of the class instance data.">width</a>();
<a name="l00407"></a>00407 <span class="keywordtype">int</span> lat_lon_size = (d_array_data_size / size);
<a name="l00408"></a>00408
<a name="l00409"></a>00409 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"lat, lon_length: "</span> << lat_length << <span class="stringliteral">", "</span> << lon_length << endl);
<a name="l00410"></a>00410 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"size: "</span> << size << endl);
<a name="l00411"></a>00411 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"d_array_data_size: "</span> << d_array_data_size << endl);
<a name="l00412"></a>00412 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"array_elem_size: "</span> << array_elem_size<< endl);
<a name="l00413"></a>00413 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"lat_lon_size: "</span> << lat_lon_size<< endl);
<a name="l00414"></a>00414
<a name="l00415"></a>00415 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < size; ++i) {
<a name="l00416"></a>00416 <span class="keywordtype">int</span> lat = 0;
<a name="l00417"></a>00417 <span class="keywordtype">int</span> s_lat = lat_length - 1;
<a name="l00418"></a>00418 <span class="comment">// lon_length is the element size; memcpy() needs the number of bytes</span>
<a name="l00419"></a>00419 <span class="keywordtype">int</span> lon_size = array_elem_size * lon_length;
<a name="l00420"></a>00420 <span class="keywordtype">int</span> offset = i * lat_lon_size;
<a name="l00421"></a>00421 <span class="keywordflow">while</span> (s_lat > -1)
<a name="l00422"></a>00422 memcpy(tmp_data + offset + (lat++ * lon_size),
<a name="l00423"></a>00423 d_array_data + offset + (s_lat-- * lon_size),
<a name="l00424"></a>00424 lon_size);
<a name="l00425"></a>00425 }
<a name="l00426"></a>00426
<a name="l00427"></a>00427 memcpy(d_array_data, tmp_data, d_array_data_size);
<a name="l00428"></a>00428 <span class="keyword">delete</span> [] tmp_data;
<a name="l00429"></a>00429 }
<a name="l00430"></a>00430
<a name="l00439"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#ab2060337a35195641d6e0f667b8bf9df">00439</a> <span class="keywordtype">void</span> GeoConstraint::reorder_longitude_map(<span class="keywordtype">int</span> longitude_index_left)
<a name="l00440"></a>00440 {
<a name="l00441"></a>00441 <span class="keywordtype">double</span> *tmp_lon = <span class="keyword">new</span> <span class="keywordtype">double</span>[d_lon_length];
<a name="l00442"></a>00442
<a name="l00443"></a>00443 swap_vector_ends((<span class="keywordtype">char</span> *) tmp_lon, (<span class="keywordtype">char</span> *) d_lon, d_lon_length,
<a name="l00444"></a>00444 longitude_index_left, <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l00445"></a>00445
<a name="l00446"></a>00446 memcpy(d_lon, tmp_lon, d_lon_length * <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l00447"></a>00447
<a name="l00448"></a>00448 <span class="keyword">delete</span>[]tmp_lon;
<a name="l00449"></a>00449 }
<a name="l00450"></a>00450
<a name="l00451"></a>00451 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00452"></a>00452 count_dimensions_except_longitude(<a class="code" href="classlibdap_1_1Array.html" title="A multidimensional array of identical data types.">Array</a> &a)
<a name="l00453"></a>00453 {
<a name="l00454"></a>00454 <span class="keywordtype">int</span> size = 1;
<a name="l00455"></a>00455 <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1Array.html#a7a557c05085a83d1501dbfa249d3cc52">Array::Dim_iter</a> i = a.<a class="code" href="classlibdap_1_1Array.html#ae6e6943cd895fa8dc1c58621ffad42a0">dim_begin</a>(); (i + 1) != a.<a class="code" href="classlibdap_1_1Array.html#a1e6b13c4a5d3e825df7ebae3a9dc300d">dim_end</a>(); ++i)
<a name="l00456"></a>00456 size *= a.<a class="code" href="classlibdap_1_1Array.html#a8f29497af9c33c0d66939d5f9a16d92a" title="Returns the size of the dimension.">dimension_size</a>(i, <span class="keyword">true</span>);
<a name="l00457"></a>00457
<a name="l00458"></a>00458 <span class="keywordflow">return</span> size;
<a name="l00459"></a>00459 }
<a name="l00460"></a>00460
<a name="l00478"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#aa893256d558152f07e08ec6f250fa089">00478</a> <span class="keywordtype">void</span> GeoConstraint::reorder_data_longitude_axis(<a class="code" href="classlibdap_1_1Array.html" title="A multidimensional array of identical data types.">Array</a> &a, <a class="code" href="classlibdap_1_1Array.html#a7a557c05085a83d1501dbfa249d3cc52">Array::Dim_iter</a> lon_dim)
<a name="l00479"></a>00479 {
<a name="l00480"></a>00480
<a name="l00481"></a>00481 <span class="keywordflow">if</span> (!is_longitude_rightmost())
<a name="l00482"></a>00482 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"This grid does not have Longitude as its rightmost dimension, the geogrid()\ndoes not support constraints that wrap around the edges of this type of grid."</span>);
<a name="l00483"></a>00483
<a name="l00484"></a>00484 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"Constraint for the left half: "</span> << get_longitude_index_left()
<a name="l00485"></a>00485 << <span class="stringliteral">", "</span> << get_lon_length() - 1 << endl);
<a name="l00486"></a>00486
<a name="l00487"></a>00487 <span class="comment">// Build a constraint for the left part and get those values</span>
<a name="l00488"></a>00488 a.<a class="code" href="classlibdap_1_1Array.html#a538f7c336e26b873f50e033d553bba26" title="Adds a constraint to an Array dimension.">add_constraint</a>(lon_dim, get_longitude_index_left(), 1,
<a name="l00489"></a>00489 get_lon_length() - 1);
<a name="l00490"></a>00490 a.<a class="code" href="classlibdap_1_1Vector.html#a58712de8871e28a48fdc95e72a09df71" title="Indicates that the data is ready to send.">set_read_p</a>(<span class="keyword">false</span>);
<a name="l00491"></a>00491 a.<a class="code" href="classlibdap_1_1BaseType.html#a1da003c53f2e663223f603ab3fbd7c8e" title="Read data into a local buffer.">read</a>();
<a name="l00492"></a>00492 <a class="code" href="debug_8h.html#ac1f764c266c50f0050e33557004c914c">DBG2</a>(a.<a class="code" href="classlibdap_1_1Array.html#af7bdf05ad5a57a517aa6b122b03f06df" title="Prints the value of the variable.">print_val</a>(stderr));
<a name="l00493"></a>00493
<a name="l00494"></a>00494 <span class="comment">// Save the left-hand data to local storage</span>
<a name="l00495"></a>00495 <span class="keywordtype">int</span> left_size = a.<a class="code" href="classlibdap_1_1Vector.html#a2a3c2d3b4a1fb3e88ee8737c1a33320a" title="Returns the width of the data, in bytes.">width</a>(); <span class="comment">// width() == length() * element size</span>
<a name="l00496"></a>00496 <span class="keywordtype">char</span> *left_data = (<span class="keywordtype">char</span>*)a.<a class="code" href="classlibdap_1_1Vector.html#a2803db526bd03df4beed106ee7dc6a4b" title="Get a copy of the data held by this variable. Read data from this variable&#39;s internal storage and...">value</a>(); <span class="comment">// value() allocates and copies</span>
<a name="l00497"></a>00497
<a name="l00498"></a>00498 <span class="comment">// Build a constraint for the 'right' part, which goes from the left edge</span>
<a name="l00499"></a>00499 <span class="comment">// of the array to the right index and read those data.</span>
<a name="l00500"></a>00500 <span class="comment">// (Don't call a.clear_constraint() since that will clear the constraint on</span>
<a name="l00501"></a>00501 <span class="comment">// all the dimensions while add_constraint() will replace a constraint on</span>
<a name="l00502"></a>00502 <span class="comment">// the given dimension).</span>
<a name="l00503"></a>00503
<a name="l00504"></a>00504 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"Constraint for the right half: "</span> << 0
<a name="l00505"></a>00505 << <span class="stringliteral">", "</span> << get_longitude_index_right() << endl);
<a name="l00506"></a>00506
<a name="l00507"></a>00507 a.<a class="code" href="classlibdap_1_1Array.html#a538f7c336e26b873f50e033d553bba26" title="Adds a constraint to an Array dimension.">add_constraint</a>(lon_dim, 0, 1, get_longitude_index_right());
<a name="l00508"></a>00508 a.<a class="code" href="classlibdap_1_1Vector.html#a58712de8871e28a48fdc95e72a09df71" title="Indicates that the data is ready to send.">set_read_p</a>(<span class="keyword">false</span>);
<a name="l00509"></a>00509 a.<a class="code" href="classlibdap_1_1BaseType.html#a1da003c53f2e663223f603ab3fbd7c8e" title="Read data into a local buffer.">read</a>();
<a name="l00510"></a>00510 <a class="code" href="debug_8h.html#ac1f764c266c50f0050e33557004c914c">DBG2</a>(a.<a class="code" href="classlibdap_1_1Array.html#af7bdf05ad5a57a517aa6b122b03f06df" title="Prints the value of the variable.">print_val</a>(stderr));
<a name="l00511"></a>00511
<a name="l00512"></a>00512 <span class="keywordtype">char</span> *right_data = (<span class="keywordtype">char</span>*)a.<a class="code" href="classlibdap_1_1Vector.html#a2803db526bd03df4beed106ee7dc6a4b" title="Get a copy of the data held by this variable. Read data from this variable&#39;s internal storage and...">value</a>();
<a name="l00513"></a>00513 <span class="keywordtype">int</span> right_size = a.<a class="code" href="classlibdap_1_1Vector.html#a2a3c2d3b4a1fb3e88ee8737c1a33320a" title="Returns the width of the data, in bytes.">width</a>();
<a name="l00514"></a>00514
<a name="l00515"></a>00515 <span class="comment">// Make one big lump O'data</span>
<a name="l00516"></a>00516 d_array_data_size = left_size + right_size;
<a name="l00517"></a>00517 d_array_data = <span class="keyword">new</span> <span class="keywordtype">char</span>[d_array_data_size];
<a name="l00518"></a>00518
<a name="l00519"></a>00519 <span class="comment">// Assume COARDS conventions are being followed: lon varies fastest.</span>
<a name="l00520"></a>00520 <span class="comment">// These *_elements variables are actually elements * bytes/element since</span>
<a name="l00521"></a>00521 <span class="comment">// memcpy() uses bytes.</span>
<a name="l00522"></a>00522 <span class="keywordtype">int</span> elem_size = a.<a class="code" href="classlibdap_1_1Vector.html#aa5ccb30d1f27ae587f35216b859feec7">var</a>()-><a class="code" href="classlibdap_1_1BaseType.html#a3058467f1e80a41f3cf1068ec9ec68ed" title="Returns the size of the class instance data.">width</a>();
<a name="l00523"></a>00523 <span class="keywordtype">int</span> left_row_size = (get_lon_length() - get_longitude_index_left()) * elem_size;
<a name="l00524"></a>00524 <span class="keywordtype">int</span> right_row_size = (get_longitude_index_right() + 1) * elem_size;
<a name="l00525"></a>00525 <span class="keywordtype">int</span> total_bytes_per_row = left_row_size + right_row_size;
<a name="l00526"></a>00526
<a name="l00527"></a>00527 <a class="code" href="debug_8h.html#ac1f764c266c50f0050e33557004c914c">DBG2</a>(cerr << <span class="stringliteral">"elem_size: "</span> << elem_size << <span class="stringliteral">"; left & right size: "</span>
<a name="l00528"></a>00528 << left_row_size << <span class="stringliteral">", "</span> << right_row_size << endl);
<a name="l00529"></a>00529
<a name="l00530"></a>00530 <span class="comment">// This will work for any number of dimension so long as longitude is the</span>
<a name="l00531"></a>00531 <span class="comment">// right-most array dimension.</span>
<a name="l00532"></a>00532 <span class="keywordtype">int</span> rows_to_copy = count_dimensions_except_longitude(a);
<a name="l00533"></a>00533 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < rows_to_copy; ++i) {
<a name="l00534"></a>00534 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"Copying "</span> << i << <span class="stringliteral">"th row"</span> << endl);
<a name="l00535"></a>00535 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"left memcpy: "</span> << *(<span class="keywordtype">float</span> *)(left_data + (left_row_size * i)) << endl);
<a name="l00536"></a>00536
<a name="l00537"></a>00537 memcpy(d_array_data + (total_bytes_per_row * i),
<a name="l00538"></a>00538 left_data + (left_row_size * i),
<a name="l00539"></a>00539 left_row_size);
<a name="l00540"></a>00540
<a name="l00541"></a>00541 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"right memcpy: "</span> << *(<span class="keywordtype">float</span> *)(right_data + (right_row_size * i)) << endl);
<a name="l00542"></a>00542
<a name="l00543"></a>00543 memcpy(d_array_data + (total_bytes_per_row * i) + left_row_size,
<a name="l00544"></a>00544 right_data + (right_row_size * i),
<a name="l00545"></a>00545 right_row_size);
<a name="l00546"></a>00546 }
<a name="l00547"></a>00547
<a name="l00548"></a>00548 <span class="keyword">delete</span>[]left_data;
<a name="l00549"></a>00549 <span class="keyword">delete</span>[]right_data;
<a name="l00550"></a>00550 }
<a name="l00551"></a>00551
<a name="l00554"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#a38326671c5124e653b450164c00fc490">00554</a> GeoConstraint::GeoConstraint()
<a name="l00555"></a>00555 : d_array_data(0), d_array_data_size(0),
<a name="l00556"></a>00556 d_lat(0), d_lon(0),
<a name="l00557"></a>00557 d_bounding_box_set(false),
<a name="l00558"></a>00558 d_longitude_rightmost(false),
<a name="l00559"></a>00559 d_longitude_notation(unknown_notation),
<a name="l00560"></a>00560 d_latitude_sense(unknown_sense)
<a name="l00561"></a>00561 {
<a name="l00562"></a>00562 <span class="comment">// Build sets of attribute values for easy searching. Maybe overkill???</span>
<a name="l00563"></a>00563 d_coards_lat_units.insert(<span class="stringliteral">"degrees_north"</span>);
<a name="l00564"></a>00564 d_coards_lat_units.insert(<span class="stringliteral">"degree_north"</span>);
<a name="l00565"></a>00565 d_coards_lat_units.insert(<span class="stringliteral">"degree_N"</span>);
<a name="l00566"></a>00566 d_coards_lat_units.insert(<span class="stringliteral">"degrees_N"</span>);
<a name="l00567"></a>00567
<a name="l00568"></a>00568 d_coards_lon_units.insert(<span class="stringliteral">"degrees_east"</span>);
<a name="l00569"></a>00569 d_coards_lon_units.insert(<span class="stringliteral">"degree_east"</span>);
<a name="l00570"></a>00570 d_coards_lon_units.insert(<span class="stringliteral">"degrees_E"</span>);
<a name="l00571"></a>00571 d_coards_lon_units.insert(<span class="stringliteral">"degree_E"</span>);
<a name="l00572"></a>00572
<a name="l00573"></a>00573 d_lat_names.insert(<span class="stringliteral">"COADSY"</span>);
<a name="l00574"></a>00574 d_lat_names.insert(<span class="stringliteral">"lat"</span>);
<a name="l00575"></a>00575 d_lat_names.insert(<span class="stringliteral">"Lat"</span>);
<a name="l00576"></a>00576 d_lat_names.insert(<span class="stringliteral">"LAT"</span>);
<a name="l00577"></a>00577
<a name="l00578"></a>00578 d_lon_names.insert(<span class="stringliteral">"COADSX"</span>);
<a name="l00579"></a>00579 d_lon_names.insert(<span class="stringliteral">"lon"</span>);
<a name="l00580"></a>00580 d_lon_names.insert(<span class="stringliteral">"Lon"</span>);
<a name="l00581"></a>00581 d_lon_names.insert(<span class="stringliteral">"LON"</span>);
<a name="l00582"></a>00582 }
<a name="l00583"></a>00583
<a name="l00594"></a><a class="code" href="classlibdap_1_1GeoConstraint.html#a971205af9b456f4594f01aa513b6543c">00594</a> <span class="keywordtype">void</span> <a class="code" href="classlibdap_1_1GeoConstraint.html#a971205af9b456f4594f01aa513b6543c">GeoConstraint::set_bounding_box</a>(<span class="keywordtype">double</span> top, <span class="keywordtype">double</span> left,
<a name="l00595"></a>00595 <span class="keywordtype">double</span> bottom, <span class="keywordtype">double</span> right)
<a name="l00596"></a>00596 {
<a name="l00597"></a>00597 <span class="comment">// Ensure this method is called only once. What about pthreads?</span>
<a name="l00598"></a>00598 <span class="comment">// The method Array::reset_constraint() might make this so it could be</span>
<a name="l00599"></a>00599 <span class="comment">// called more than once. jhrg 8/30/06</span>
<a name="l00600"></a>00600 <span class="keywordflow">if</span> (d_bounding_box_set)
<a name="l00601"></a>00601 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"It is not possible to register more than one geographical constraint on a variable."</span>);
<a name="l00602"></a>00602
<a name="l00603"></a>00603 <span class="comment">// Record the 'sense' of the latitude for use here and later on.</span>
<a name="l00604"></a>00604 d_latitude_sense = <a class="code" href="classlibdap_1_1GeoConstraint.html#a1f0111c7077e67459f9e3b47161848a7">categorize_latitude</a>();
<a name="l00605"></a>00605 <span class="preprocessor">#if 0</span>
<a name="l00606"></a>00606 <span class="preprocessor"></span> <span class="keywordflow">if</span> (d_latitude_sense == <a class="code" href="classlibdap_1_1GeoConstraint.html#a2304140a3b6310c6ed8bce30ebdaed7ba77fdac07a46105592ea0707f365f04c6">inverted</a>)
<a name="l00607"></a>00607 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"geogrid() does not currently work with inverted data (data where the north pole is at a negative latitude value)."</span>);
<a name="l00608"></a>00608 <span class="preprocessor">#endif</span>
<a name="l00609"></a>00609 <span class="preprocessor"></span>
<a name="l00610"></a>00610 <span class="comment">// Categorize the notation used by the bounding box (0/359 or -180/179).</span>
<a name="l00611"></a>00611 d_longitude_notation = <a class="code" href="classlibdap_1_1GeoConstraint.html#a05015b19dc58da44a8c401562a2b5c65">categorize_notation</a>(left, right);
<a name="l00612"></a>00612
<a name="l00613"></a>00613 <span class="comment">// If the notation uses -180/179, transform the request to 0/359 notation.</span>
<a name="l00614"></a>00614 <span class="keywordflow">if</span> (d_longitude_notation == <a class="code" href="classlibdap_1_1GeoConstraint.html#ad02233f3f59e758747227be620b40d12af4021ad4ef44093b0d31a7dff458059e">neg_pos</a>)
<a name="l00615"></a>00615 <a class="code" href="classlibdap_1_1GeoConstraint.html#adf09e62fff4bc76f2820e947d45f21bf">transform_constraint_to_pos_notation</a>(left, right);
<a name="l00616"></a>00616
<a name="l00617"></a>00617 <span class="comment">// If the grid uses -180/179, transform it to 0/359 as well. This will make</span>
<a name="l00618"></a>00618 <span class="comment">// subsequent logic easier and adds only a few extra operations, even with</span>
<a name="l00619"></a>00619 <span class="comment">// large maps.</span>
<a name="l00620"></a>00620 <a class="code" href="classlibdap_1_1GeoConstraint.html#ad02233f3f59e758747227be620b40d12">Notation</a> longitude_notation =
<a name="l00621"></a>00621 <a class="code" href="classlibdap_1_1GeoConstraint.html#a05015b19dc58da44a8c401562a2b5c65">categorize_notation</a>(d_lon[0], d_lon[d_lon_length - 1]);
<a name="l00622"></a>00622
<a name="l00623"></a>00623 <span class="keywordflow">if</span> (longitude_notation == <a class="code" href="classlibdap_1_1GeoConstraint.html#ad02233f3f59e758747227be620b40d12af4021ad4ef44093b0d31a7dff458059e">neg_pos</a>)
<a name="l00624"></a>00624 <a class="code" href="classlibdap_1_1GeoConstraint.html#a6651f68d957189fe33cc81f2193b6ef6">transform_longitude_to_pos_notation</a>();
<a name="l00625"></a>00625
<a name="l00626"></a>00626 <span class="keywordflow">if</span> (!<a class="code" href="classlibdap_1_1GeoConstraint.html#a9039ef1033b512b10034fd5f7c1a129f">is_bounding_box_valid</a>(left, top, right, bottom))
<a name="l00627"></a>00627 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"The bounding box does not intersect any data within this Grid or Array. The\ngeographical extent of these data are from latitude "</span>
<a name="l00628"></a>00628 + <a class="code" href="namespacelibdap.html#a7c3f898946a0ae498f4ca830731cc474">double_to_string</a>(d_lat[0]) + <span class="stringliteral">" to "</span>
<a name="l00629"></a>00629 + <a class="code" href="namespacelibdap.html#a7c3f898946a0ae498f4ca830731cc474">double_to_string</a>(d_lat[d_lat_length-1])
<a name="l00630"></a>00630 + <span class="stringliteral">"\nand longitude "</span> + <a class="code" href="namespacelibdap.html#a7c3f898946a0ae498f4ca830731cc474">double_to_string</a>(d_lon[0])
<a name="l00631"></a>00631 + <span class="stringliteral">" to "</span> + <a class="code" href="namespacelibdap.html#a7c3f898946a0ae498f4ca830731cc474">double_to_string</a>(d_lon[d_lon_length-1])
<a name="l00632"></a>00632 + <span class="stringliteral">" while the bounding box provided was latitude "</span>
<a name="l00633"></a>00633 + <a class="code" href="namespacelibdap.html#a7c3f898946a0ae498f4ca830731cc474">double_to_string</a>(top) + <span class="stringliteral">" to "</span>
<a name="l00634"></a>00634 + <a class="code" href="namespacelibdap.html#a7c3f898946a0ae498f4ca830731cc474">double_to_string</a>(bottom) + <span class="stringliteral">"\nand longitude "</span>
<a name="l00635"></a>00635 + <a class="code" href="namespacelibdap.html#a7c3f898946a0ae498f4ca830731cc474">double_to_string</a>(left) + <span class="stringliteral">" to "</span>
<a name="l00636"></a>00636 + <a class="code" href="namespacelibdap.html#a7c3f898946a0ae498f4ca830731cc474">double_to_string</a>(right));
<a name="l00637"></a>00637
<a name="l00638"></a>00638 <span class="comment">// This is simpler than the longitude case because there's no need to</span>
<a name="l00639"></a>00639 <span class="comment">// test for several notations, no need to accommodate them in the return,</span>
<a name="l00640"></a>00640 <span class="comment">// no modulo arithmetic for the axis and no need to account for a</span>
<a name="l00641"></a>00641 <span class="comment">// constraint with two disconnected parts to be joined.</span>
<a name="l00642"></a>00642 <a class="code" href="classlibdap_1_1GeoConstraint.html#a1a9145ad48fdeea6eb810521f836c843">find_latitude_indeces</a>(top, bottom, d_latitude_sense,
<a name="l00643"></a>00643 d_latitude_index_top, d_latitude_index_bottom);
<a name="l00644"></a>00644
<a name="l00645"></a>00645
<a name="l00646"></a>00646 <span class="comment">// Find the longitude map indexes that correspond to the bounding box.</span>
<a name="l00647"></a>00647 <a class="code" href="classlibdap_1_1GeoConstraint.html#ae8919739ddc3071a4b472d0234ca4300">find_longitude_indeces</a>(left, right, d_longitude_index_left,
<a name="l00648"></a>00648 d_longitude_index_right);
<a name="l00649"></a>00649
<a name="l00650"></a>00650 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"Bounding box (tlbr): "</span> << d_latitude_index_top << <span class="stringliteral">", "</span>
<a name="l00651"></a>00651 << d_longitude_index_left << <span class="stringliteral">", "</span>
<a name="l00652"></a>00652 << d_latitude_index_bottom << <span class="stringliteral">", "</span>
<a name="l00653"></a>00653 << d_longitude_index_right << endl);
<a name="l00654"></a>00654
<a name="l00655"></a>00655 d_bounding_box_set = <span class="keyword">true</span>;
<a name="l00656"></a>00656 }
<a name="l00657"></a>00657
<a name="l00658"></a>00658 } <span class="comment">// namespace libdap</span>
</pre></div></div>
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