<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang=""> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>django.contrib.gis.gdal.envelope — Django 1.8.19 documentation</title> <link rel="stylesheet" href="../../../../../_static/default.css" type="text/css" /> <link rel="stylesheet" href="../../../../../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../../../../../', VERSION: '1.8.19', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../../../../../_static/jquery.js"></script> <script type="text/javascript" src="../../../../../_static/underscore.js"></script> <script type="text/javascript" src="../../../../../_static/doctools.js"></script> <link rel="index" title="Index" href="../../../../../genindex.html" /> <link rel="search" title="Search" href="../../../../../search.html" /> <link rel="top" title="Django 1.8.19 documentation" href="../../../../../contents.html" /> <link rel="up" title="django" href="../../../../django.html" /> <script type="text/javascript" src="../../../../../templatebuiltins.js"></script> <script type="text/javascript"> (function($) { if (!django_template_builtins) { // templatebuiltins.js missing, do nothing. return; } $(document).ready(function() { // Hyperlink Django template tags and filters var base = "../../../../../ref/templates/builtins.html"; if (base == "#") { // Special case for builtins.html itself base = ""; } // Tags are keywords, class '.k' $("div.highlight\\-html\\+django span.k").each(function(i, elem) { var tagname = $(elem).text(); if ($.inArray(tagname, django_template_builtins.ttags) != -1) { var fragment = tagname.replace(/_/, '-'); $(elem).html("<a href='" + base + "#" + fragment + "'>" + tagname + "</a>"); } }); // Filters are functions, class '.nf' $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { var filtername = $(elem).text(); if ($.inArray(filtername, django_template_builtins.tfilters) != -1) { var fragment = filtername.replace(/_/, '-'); $(elem).html("<a href='" + base + "#" + fragment + "'>" + filtername + "</a>"); } }); }); })(jQuery); </script> </head> <body role="document"> <div class="document"> <div id="custom-doc" class="yui-t6"> <div id="hd"> <h1><a href="../../../../../index.html">Django 1.8.19 documentation</a></h1> <div id="global-nav"> <a title="Home page" href="../../../../../index.html">Home</a> | <a title="Table of contents" href="../../../../../contents.html">Table of contents</a> | <a title="Global index" href="../../../../../genindex.html">Index</a> | <a title="Module index" href="../../../../../py-modindex.html">Modules</a> </div> <div class="nav"> <a href="../../../../index.html" title="Module code" accesskey="U">up</a></div> </div> <div id="bd"> <div id="yui-main"> <div class="yui-b"> <div class="yui-g" id="_modules-django-contrib-gis-gdal-envelope"> <h1>Source code for django.contrib.gis.gdal.envelope</h1><div class="highlight"><pre> <span></span><span class="sd">"""</span> <span class="sd"> The GDAL/OGR library uses an Envelope structure to hold the bounding</span> <span class="sd"> box information for a geometry. The envelope (bounding box) contains</span> <span class="sd"> two pairs of coordinates, one for the lower left coordinate and one</span> <span class="sd"> for the upper right coordinate:</span> <span class="sd"> +----------o Upper right; (max_x, max_y)</span> <span class="sd"> | |</span> <span class="sd"> | |</span> <span class="sd"> | |</span> <span class="sd"> Lower left (min_x, min_y) o----------+</span> <span class="sd">"""</span> <span class="kn">from</span> <span class="nn">ctypes</span> <span class="k">import</span> <span class="n">Structure</span><span class="p">,</span> <span class="n">c_double</span> <span class="kn">from</span> <span class="nn">django.contrib.gis.gdal.error</span> <span class="k">import</span> <span class="n">GDALException</span> <span class="c1"># The OGR definition of an Envelope is a C structure containing four doubles.</span> <span class="c1"># See the 'ogr_core.h' source file for more information:</span> <span class="c1"># http://www.gdal.org/ogr/ogr__core_8h-source.html</span> <span class="k">class</span> <span class="nc">OGREnvelope</span><span class="p">(</span><span class="n">Structure</span><span class="p">):</span> <span class="s2">"Represents the OGREnvelope C Structure."</span> <span class="n">_fields_</span> <span class="o">=</span> <span class="p">[(</span><span class="s2">"MinX"</span><span class="p">,</span> <span class="n">c_double</span><span class="p">),</span> <span class="p">(</span><span class="s2">"MaxX"</span><span class="p">,</span> <span class="n">c_double</span><span class="p">),</span> <span class="p">(</span><span class="s2">"MinY"</span><span class="p">,</span> <span class="n">c_double</span><span class="p">),</span> <span class="p">(</span><span class="s2">"MaxY"</span><span class="p">,</span> <span class="n">c_double</span><span class="p">),</span> <span class="p">]</span> <div class="viewcode-block" id="Envelope"><a class="viewcode-back" href="../../../../../ref/contrib/gis/gdal.html#django.contrib.gis.gdal.Envelope">[docs]</a><span class="k">class</span> <span class="nc">Envelope</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> The Envelope object is a C structure that contains the minimum and</span> <span class="sd"> maximum X, Y coordinates for a rectangle bounding box. The naming</span> <span class="sd"> of the variables is compatible with the OGR Envelope structure.</span> <span class="sd"> """</span> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> The initialization function may take an OGREnvelope structure, 4-element</span> <span class="sd"> tuple or list, or 4 individual arguments.</span> <span class="sd"> """</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">OGREnvelope</span><span class="p">):</span> <span class="c1"># OGREnvelope (a ctypes Structure) was passed in.</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span> <span class="o">=</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="p">(</span><span class="nb">tuple</span><span class="p">,</span> <span class="nb">list</span><span class="p">)):</span> <span class="c1"># A tuple was passed in.</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">!=</span> <span class="mi">4</span><span class="p">:</span> <span class="k">raise</span> <span class="n">GDALException</span><span class="p">(</span><span class="s1">'Incorrect number of tuple elements (</span><span class="si">%d</span><span class="s1">).'</span> <span class="o">%</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]))</span> <span class="k">else</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_from_sequence</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s1">'Incorrect type of argument: </span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="nb">str</span><span class="p">(</span><span class="nb">type</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])))</span> <span class="k">elif</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">4</span><span class="p">:</span> <span class="c1"># Individual parameters passed in.</span> <span class="c1"># Thanks to ww for the help</span> <span class="bp">self</span><span class="o">.</span><span class="n">_from_sequence</span><span class="p">([</span><span class="nb">float</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="k">for</span> <span class="n">a</span> <span class="ow">in</span> <span class="n">args</span><span class="p">])</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="n">GDALException</span><span class="p">(</span><span class="s1">'Incorrect number (</span><span class="si">%d</span><span class="s1">) of arguments.'</span> <span class="o">%</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">))</span> <span class="c1"># Checking the x,y coordinates</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_x</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">max_x</span><span class="p">:</span> <span class="k">raise</span> <span class="n">GDALException</span><span class="p">(</span><span class="s1">'Envelope minimum X > maximum X.'</span><span class="p">)</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_y</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">max_y</span><span class="p">:</span> <span class="k">raise</span> <span class="n">GDALException</span><span class="p">(</span><span class="s1">'Envelope minimum Y > maximum Y.'</span><span class="p">)</span> <span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Returns True if the envelopes are equivalent; can compare against</span> <span class="sd"> other Envelopes and 4-tuples.</span> <span class="sd"> """</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">Envelope</span><span class="p">):</span> <span class="k">return</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">min_x</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">min_x</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">min_y</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">min_y</span><span class="p">)</span> <span class="ow">and</span> \ <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">max_x</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">max_x</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">max_y</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">max_y</span><span class="p">)</span> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="nb">tuple</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">len</span><span class="p">(</span><span class="n">other</span><span class="p">)</span> <span class="o">==</span> <span class="mi">4</span><span class="p">:</span> <span class="k">return</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">min_x</span> <span class="o">==</span> <span class="n">other</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">min_y</span> <span class="o">==</span> <span class="n">other</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span> <span class="ow">and</span> \ <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">max_x</span> <span class="o">==</span> <span class="n">other</span><span class="p">[</span><span class="mi">2</span><span class="p">])</span> <span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">max_y</span> <span class="o">==</span> <span class="n">other</span><span class="p">[</span><span class="mi">3</span><span class="p">])</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="n">GDALException</span><span class="p">(</span><span class="s1">'Equivalence testing only works with other Envelopes.'</span><span class="p">)</span> <span class="k">def</span> <span class="nf">__str__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="s2">"Returns a string representation of the tuple."</span> <span class="k">return</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">tuple</span><span class="p">)</span> <span class="k">def</span> <span class="nf">_from_sequence</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">seq</span><span class="p">):</span> <span class="s2">"Initializes the C OGR Envelope structure from the given sequence."</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span> <span class="o">=</span> <span class="n">OGREnvelope</span><span class="p">()</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MinX</span> <span class="o">=</span> <span class="n">seq</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MinY</span> <span class="o">=</span> <span class="n">seq</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MaxX</span> <span class="o">=</span> <span class="n">seq</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MaxY</span> <span class="o">=</span> <span class="n">seq</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span> <div class="viewcode-block" id="Envelope.expand_to_include"><a class="viewcode-back" href="../../../../../ref/contrib/gis/gdal.html#django.contrib.gis.gdal.Envelope.expand_to_include">[docs]</a> <span class="k">def</span> <span class="nf">expand_to_include</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Modifies the envelope to expand to include the boundaries of</span> <span class="sd"> the passed-in 2-tuple (a point), 4-tuple (an extent) or</span> <span class="sd"> envelope.</span> <span class="sd"> """</span> <span class="c1"># We provide a number of different signatures for this method,</span> <span class="c1"># and the logic here is all about converting them into a</span> <span class="c1"># 4-tuple single parameter which does the actual work of</span> <span class="c1"># expanding the envelope.</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">Envelope</span><span class="p">):</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">expand_to_include</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">tuple</span><span class="p">)</span> <span class="k">elif</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="s1">'x'</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="s1">'y'</span><span class="p">):</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">expand_to_include</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">x</span><span class="p">,</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">y</span><span class="p">,</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">x</span><span class="p">,</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">y</span><span class="p">)</span> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="p">(</span><span class="nb">tuple</span><span class="p">,</span> <span class="nb">list</span><span class="p">)):</span> <span class="c1"># A tuple was passed in.</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">==</span> <span class="mi">2</span><span class="p">:</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">expand_to_include</span><span class="p">((</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="mi">0</span><span class="p">],</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="mi">1</span><span class="p">],</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="mi">0</span><span class="p">],</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="mi">1</span><span class="p">]))</span> <span class="k">elif</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">==</span> <span class="mi">4</span><span class="p">:</span> <span class="p">(</span><span class="n">minx</span><span class="p">,</span> <span class="n">miny</span><span class="p">,</span> <span class="n">maxx</span><span class="p">,</span> <span class="n">maxy</span><span class="p">)</span> <span class="o">=</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">if</span> <span class="n">minx</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MinX</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MinX</span> <span class="o">=</span> <span class="n">minx</span> <span class="k">if</span> <span class="n">miny</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MinY</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MinY</span> <span class="o">=</span> <span class="n">miny</span> <span class="k">if</span> <span class="n">maxx</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MaxX</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MaxX</span> <span class="o">=</span> <span class="n">maxx</span> <span class="k">if</span> <span class="n">maxy</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MaxY</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MaxY</span> <span class="o">=</span> <span class="n">maxy</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="n">GDALException</span><span class="p">(</span><span class="s1">'Incorrect number of tuple elements (</span><span class="si">%d</span><span class="s1">).'</span> <span class="o">%</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]))</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s1">'Incorrect type of argument: </span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="nb">str</span><span class="p">(</span><span class="nb">type</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])))</span> <span class="k">elif</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">2</span><span class="p">:</span> <span class="c1"># An x and an y parameter were passed in</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">expand_to_include</span><span class="p">((</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">args</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">args</span><span class="p">[</span><span class="mi">1</span><span class="p">]))</span> <span class="k">elif</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">4</span><span class="p">:</span> <span class="c1"># Individual parameters passed in.</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">expand_to_include</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="n">GDALException</span><span class="p">(</span><span class="s1">'Incorrect number (</span><span class="si">%d</span><span class="s1">) of arguments.'</span> <span class="o">%</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]))</span></div> <span class="nd">@property</span> <span class="k">def</span> <span class="nf">min_x</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="s2">"Returns the value of the minimum X coordinate."</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MinX</span> <span class="nd">@property</span> <span class="k">def</span> <span class="nf">min_y</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="s2">"Returns the value of the minimum Y coordinate."</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MinY</span> <span class="nd">@property</span> <span class="k">def</span> <span class="nf">max_x</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="s2">"Returns the value of the maximum X coordinate."</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MaxX</span> <span class="nd">@property</span> <span class="k">def</span> <span class="nf">max_y</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="s2">"Returns the value of the maximum Y coordinate."</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_envelope</span><span class="o">.</span><span class="n">MaxY</span> <span class="nd">@property</span> <span class="k">def</span> <span class="nf">ur</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="s2">"Returns the upper-right coordinate."</span> <span class="k">return</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">max_x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_y</span><span class="p">)</span> <span class="nd">@property</span> <span class="k">def</span> <span class="nf">ll</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="s2">"Returns the lower-left coordinate."</span> <span class="k">return</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">min_x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_y</span><span class="p">)</span> <span class="nd">@property</span> <span class="k">def</span> <span class="nf">tuple</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="s2">"Returns a tuple representing the envelope."</span> <span class="k">return</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">min_x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_y</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_y</span><span class="p">)</span> <span class="nd">@property</span> <span class="k">def</span> <span class="nf">wkt</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="s2">"Returns WKT representing a Polygon for this envelope."</span> <span class="c1"># TODO: Fix significant figures.</span> <span class="k">return</span> <span class="s1">'POLYGON((</span><span class="si">%s</span><span class="s1"> </span><span class="si">%s</span><span class="s1">,</span><span class="si">%s</span><span class="s1"> </span><span class="si">%s</span><span class="s1">,</span><span class="si">%s</span><span class="s1"> </span><span class="si">%s</span><span class="s1">,</span><span class="si">%s</span><span class="s1"> </span><span class="si">%s</span><span class="s1">,</span><span class="si">%s</span><span class="s1"> </span><span class="si">%s</span><span class="s1">))'</span> <span class="o">%</span> \ <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">min_x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_y</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_y</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_y</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_y</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_y</span><span class="p">)</span></div> </pre></div> </div> </div> </div> <div class="yui-b" id="sidebar"> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h3>Browse</h3> <ul> </ul> <h3>You are here:</h3> <ul> <li> <a href="../../../../../index.html">Django 1.8.19 documentation</a> <ul><li><a href="../../../../index.html">Module code</a> <ul><li><a href="../../../../django.html">django</a> <ul><li>django.contrib.gis.gdal.envelope</li></ul> </li></ul></li></ul> </li> </ul> <div id="searchbox" style="display: none" role="search"> <h3>Quick search</h3> <form class="search" action="../../../../../search.html" method="get"> <div><input type="text" name="q" /></div> <div><input type="submit" value="Go" /></div> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" 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