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<title>PSVELO</title>
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<body bgcolor="#ffffff">
<h1 align=center>PSVELO</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#ARGUMENTS">ARGUMENTS</a><br>
<a href="#OPTIONS">OPTIONS</a><br>
<a href="#EXAMPLES">EXAMPLES</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<a href="#REFERENCES">REFERENCES</a><br>
<a href="#AUTHORS">AUTHORS</a><br>
<hr>
<a name="NAME"></a>
<h2>NAME</h2>
<p style="margin-left:11%; margin-top: 1em">psvelo −
Plot velocity vectors, crosses, and wedges on maps</p>
<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
<p style="margin-left:11%; margin-top: 1em"><b>psvelo</b>
<i>files</i> <b>−J</b><i>parameters</i>
<b>−R</b><i>west</i>/<i>east</i>/<i>south</i>/<i>north</i>[<b>r</b>]
[ <b>−B</b>[<b>p</b>|<b>s</b>]<i>parameters</i> ] [
<b>−D</b><i>sigma_scale</i> ] [
<b>−F</b><i>color</i> ] [ <b>−E</b><i>color</i>
] [ <b>−G</b><i>fill</i> ] [
<b>−H</b>[<b>i</b>][<i>nrec</i>] ] [ <b>−K</b> ]
[ <b>−L</b> ] [ <b>−N</b> ] [ <b>−O</b> ]
[ <b>−P</b> ] [
<b>−S</b><i>symbol</i>/<i>scale</i>/<i>conf</i>/<i>font_size</i>
] [
<b>−U</b>[<i>just</i>/<i>dx</i>/<i>dy</i>/][<b>c</b>|<i>label</i>]
] [ <b>−V</b> ] [ <b>−W</b><i>pen</i> ] [
<b>−X</b>[<b>a</b>|<b>c</b>|<b>r</b>][<i>x-shift</i>[<b>u</b>]]
] [
<b>−Y</b>[<b>a</b>|<b>c</b>|<b>r</b>][<i>y-shift</i>[<b>u</b>]]
] [ <b>−:</b>[<b>i</b>|<b>o</b>] ] [
<b>−c</b><i>copies</i> ]</p>
<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>
<p style="margin-left:11%; margin-top: 1em"><b>psvelo</b>
reads data values from <i>files</i> [or standard input] and
generates <i>PostScript</i> code that will plot velocity
arrows on a map. Most options are the same as for
<b><A HREF="psxy.html">psxy</A></b>, except <b>−S</b>. The <i>PostScript</i>
code is written to standard output. The previous version
(<b>psvelomeca</b>) is now obsolete. It has been replaced by
<b>psvelo</b> and <b><A HREF="psmeca.html">psmeca</A></b>.</p>
<a name="ARGUMENTS"></a>
<h2>ARGUMENTS</h2>
<p style="margin-left:11%; margin-top: 1em"><i>files</i>
List one or more file-names. If no files are given,
<b>psvelo</b> will read standard input.</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−J</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Selects the map
projection. Scale is UNIT/degree, 1:xxxxx, or width in UNIT
(upper case modifier). UNIT is cm, inch, or m, depending on
the <b><A HREF="gmtdefaults.html#MEASURE_UNIT">MEASURE_UNIT</A></b> setting in .gmtdefaults4, but this
can be overridden on the command line by appending <b>c</b>,
<b>i</b>, or <b>m</b> to the scale/width value. When central
meridian is optional, default is center of longitude range
on <b>−R</b> option. Default standard parallel is the
equator. For map height, max dimension, or min dimension,
append <b>h</b>, <b>+</b>, or <b>-</b> to the width,
respectively.</p> </td>
</table>
<p style="margin-left:22%;">More details can be found in
the <b><A HREF="psbasemap.html">psbasemap</A></b> man pages.</p>
<p style="margin-left:22%; margin-top: 1em"><b>CYLINDRICAL
PROJECTIONS:</b></p>
<p style="margin-left:22%; margin-top: 1em"><b>−Jc</b><i>lon0/lat0/scale</i>
(Cassini) <b><br>
−Jcyl_stere</b>/[<i>lon0/</i>[<i>lat0/</i>]]<i>scale</i>
(Cylindrical Stereographic) <b><br>
−Jj</b>[<i>lon0/</i>]<i>scale</i> (Miller) <b><br>
−Jm</b>[<i>lon0</i>/[<i>lat0/</i>]]<i>scale</i>
(Mercator) <b><br>
−Jm</b><i>lon0/lat0/scale</i> (Mercator - Give
meridian and standard parallel) <b><br>
−Jo</b>[<b>a</b>]<i>lon0/lat0/azimuth/scale</i>
(Oblique Mercator - point and azimuth) <b><br>
−Jo</b>[<b>b</b>]<i>lon0/lat0/lon1/lat1/scale</i>
(Oblique Mercator - two points) <b><br>
−Joc</b><i>lon0/lat0/lonp/latp/scale</i> (Oblique
Mercator - point and pole) <b><br>
−Jq</b>[<i>lon0/</i>[<i>lat0/</i>]]<i>scale</i>
(Cylindrical Equidistant) <b><br>
−Jt</b><i>lon0/</i>[<i>lat0/</i>]<i>scale</i> (TM -
Transverse Mercator) <b><br>
−Ju</b><i>zone/scale</i> (UTM - Universal Transverse
Mercator) <b><br>
−Jy</b>[<i>lon0/</i>[<i>lat0/</i>]]<i>scale</i>
(Cylindrical Equal-Area)</p>
<p style="margin-left:22%; margin-top: 1em"><b>CONIC
PROJECTIONS:</b></p>
<p style="margin-left:22%; margin-top: 1em"><b>−Jb</b><i>lon0/lat0/lat1/lat2/scale</i>
(Albers) <b><br>
−Jd</b><i>lon0/lat0/lat1/lat2/scale</i> (Conic
Equidistant) <b><br>
−Jl</b><i>lon0/lat0/lat1/lat2/scale</i> (Lambert Conic
Conformal) <b><br>
−Jpoly</b>/[<i>lon0/</i>[<i>lat0/</i>]]<i>scale</i>
((American) Polyconic)</p>
<p style="margin-left:22%; margin-top: 1em"><b>AZIMUTHAL
PROJECTIONS:</b></p>
<p style="margin-left:22%; margin-top: 1em"><b>−Ja</b><i>lon0/lat0</i>[<i>/horizon</i>]<i>/scale</i>
(Lambert Azimuthal Equal-Area) <b><br>
−Je</b><i>lon0/lat0</i>[<i>/horizon</i>]<i>/scale</i>
(Azimuthal Equidistant) <b><br>
−Jf</b><i>lon0/lat0</i>[<i>/horizon</i>]<i>/scale</i>
(Gnomonic) <b><br>
−Jg</b><i>lon0/lat0</i>[<i>/horizon</i>]<i>/scale</i>
(Orthographic) <b><br>
−Jg</b><i>lon0/lat0/altitude/azimuth/tilt/twist/Width/Height/scale</i>
(General Perspective). <b><br>
−Js</b><i>lon0/lat0</i>[<i>/horizon</i>]<i>/scale</i>
(General Stereographic)</p>
<p style="margin-left:22%; margin-top: 1em"><b>MISCELLANEOUS
PROJECTIONS:</b></p>
<p style="margin-left:22%; margin-top: 1em"><b>−Jh</b>[<i>lon0/</i>]<i>scale</i>
(Hammer) <b><br>
−Ji</b>[<i>lon0/</i>]<i>scale</i> (Sinusoidal) <b><br>
−Jkf</b>[<i>lon0/</i>]<i>scale</i> (Eckert IV) <b><br>
−Jk</b>[<b>s</b>][<i>lon0/</i>]<i>scale</i> (Eckert
IV) <b><br>
−Jn</b>[<i>lon0/</i>]<i>scale</i> (Robinson) <b><br>
−Jr</b>[<i>lon0/</i>]<i>scale</i> (Winkel Tripel)
<b><br>
−Jv</b>[<i>lon0/</i>]<i>scale</i> (Van der Grinten)
<b><br>
−Jw</b>[<i>lon0/</i>]<i>scale</i> (Mollweide)</p>
<p style="margin-left:22%; margin-top: 1em"><b>NON-GEOGRAPHICAL
PROJECTIONS:</b></p>
<p style="margin-left:22%; margin-top: 1em"><b>−Jp</b>[<b>a</b>]<i>scale</i>[<i>/origin</i>][<b>r</b>|<b>z</b>]
(Polar coordinates (theta,r)) <b><br>
−Jx</b><i>x-scale</i>[<b>d</b>|<b>l</b>|<b>p</b><i>pow</i>|<b>t</b>|<b>T</b>][<i>/y-scale</i>[<b>d</b>|<b>l</b>|<b>p</b><i>pow</i>|<b>t</b>|<b>T</b>]]
(Linear, log, and power scaling)</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−R</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top"><i>west, east,
south,</i> and <i>north</i> specify the Region of interest,
and you may specify them in decimal degrees or in
[+-]dd:mm[:ss.xxx][W|E|S|N] format. Append <b>r</b> if lower
left and upper right map coordinates are given instead of
w/e/s/n. The two shorthands <b>−Rg</b> and
<b>−Rd</b> stand for global domain (0/360 and
-180/+180 in longitude respectively, with -90/+90 in
latitude). Alternatively, specify the name of an existing
grid file and the <b>−R</b> settings (and grid
spacing, if applicable) are copied from the grid.</p></td>
</table>
<p style="margin-left:22%; margin-top: 1em"><b>−S</b>Selects
the meaning of the columns in the data file and the figure
to be plotted.</p>
<p style="margin-left:11%;"><b>−Se</b><i>velscale/confidence/fontsize</i>.</p>
<p style="margin-left:22%;">Velocity ellipses in (N,E)
convention. <i>Vscale</i> sets the scaling of the velocity
arrows. This scaling gives inches (unless <b>c</b>,
<b>i</b>, <b>m</b>, or <b>p</b> is appended).
<i>Confidence</i> sets the 2-dimensional confidence limit
for the ellipse, e.g., 0.95 for 95% confidence ellipse.
<i>Fontsize</i> sets the size of the text in points. The
ellipse will be filled with the color or shade specified by
the <b>−G</b> option [default transparent]. The arrow
and the circumference of the ellipse will be drawn with the
pen attributes specified by the <b>−W</b> option.
Parameters are expected to be in the following columns:</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>1,2</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">longitude, latitude
of station (<b>−:</b> option interchanges order)</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>3,4</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">eastward, northward
velocity (<b>−:</b> option interchanges order)</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>5,6</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">uncertainty of
eastward, northward velocities (1-sigma) (<b>−:</b>
option interchanges order)</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>7</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">correlation between
eastward and northward components</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>8</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">name of station
(optional).</p> </td>
</table>
<p style="margin-left:11%;"><b>−Sn</b><i>barscale.</i></p>
<p style="margin-left:22%;">Anisotropy bars.
<i>Barscale</i> sets the scaling of the bars This scaling
gives inches (unless <b>c</b>, <b>i</b>, <b>m</b>, or
<b>p</b> is appended). Parameters are expected to be in the
following columns:</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>1,2</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">longitude, latitude
of station (<b>−:</b> option interchanges order)</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>3,4</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">eastward, northward
components of anisotropy vector (<b>−:</b> option
interchanges order)</p></td>
</table>
<p style="margin-left:11%;"><b>−Sr</b><i>velscale/confidence/fontsize</i></p>
<p style="margin-left:22%;">Velocity ellipses in rotated
convention. <i>Vscale</i> sets the scaling of the velocity
arrows. This scaling gives inches (unless <b>c</b>,
<b>i</b>, <b>m</b>, or <b>p</b> is appended).
<i>Confidence</i> sets the 2-dimensional confidence limit
for the ellipse, e.g., 0.95 for 95% confidence ellipse.
<i>Fontsize</i> sets the size of the text in points. The
ellipse will be filled with the color or shade specified by
the <b>−G</b> option [default transparent]. The arrow
and the circumference of the ellipse will be drawn with the
pen attributes specified by the <b>−W</b> option.
Parameters are expected to be in the following columns:</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>1,2</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">longitude,
latitude, of station (<b>−:</b> option interchanges
order)</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>3,4</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">eastward, northward
velocity (<b>−:</b> option interchanges order)</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>5,6</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">semi-major,
semi-minor axes</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>7</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">counter-clockwise
angle, in degrees, from horizontal axis to major axis of
ellipse.</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>8</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">name of station
(optional)</p> </td>
</table>
<p style="margin-left:11%;"><b>−Sw</b><i>wedge_scale/wedge_mag</i>.</p>
<p style="margin-left:22%;">Rotational wedges.
<i>Wedge_scale</i> sets the size of the wedges in inches
(unless <b>c</b>, <b>i</b>, <b>m</b>, or <b>p</b> is
appended). Values are multiplied by <i>Wedge_mag</i> before
plotting. For example, setting <i>Wedge_mag</i> to 1.e7
works well for rotations of the order of 100 nanoradians/yr.
Use <b>−G</b> to set the fill color or shade for the
wedge, and <b>−E</b> to set the color or shade for the
uncertainty. Parameters are expected to be in the following
columns:</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>1,2</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">longitude,
latitude, of station (<b>−:</b> option interchanges
order)</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>3</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">rotation in
radians</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>4</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">rotation
uncertainty in radians</p></td>
</table>
<p style="margin-left:11%;"><b>−Sx</b><i>cross_scale</i></p>
<p style="margin-left:22%;">gives Strain crosses.
<i>Cross_scale</i> sets the size of the cross in inches
(unless <b>c</b>, <b>i</b>, <b>m</b>, or <b>p</b> is
appended). Parameters are expected to be in the following
columns:</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>1,2</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">longitude,
latitude, of station (<b>−:</b> option interchanges
order)</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>3</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">eps1, the most
extensional eigenvalue of strain tensor, with extension
taken positive.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>4</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">eps2, the most
compressional eigenvalue of strain tensor, with extension
taken positive.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p style="margin-top: 1em" valign="top"><b>5</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">azimuth of eps2 in
degrees CW from North.</p></td>
</table>
<a name="OPTIONS"></a>
<h2>OPTIONS</h2>
<p style="margin-left:11%; margin-top: 1em">No space
between the option flag and the associated arguments.</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−A</b></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top"><i>Arrow_width/Head_length/Head_width</i>
Size of arrow in inches. [Default is 0.03/0.12/0.09].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−B</b></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Sets map boundary
annotation and tickmark intervals; see the <b><A HREF="psbasemap.html">psbasemap</A></b>
man page for all the details.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−C</b></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Offset focal
mechanisms to the latitude and longitude specified in the
last two columns of the input file.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−D</b></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top"><i>Sigma_scale</i>
can be used to rescale the uncertainties of velocities
(<b>−Se</b> and <b>−Sr</b>) and rotations
(<b>−Sw</b>). Can be combined with the
<i>confidence</i> variable.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−F</b><i>fill</i></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Sets the color or
shade used for frame and annotation. [Default is 0/0/0
(black)]</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−E</b><i>fill</i></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Sets the color or
shade used for filling uncertainty wedges (<b>−Sw</b>)
or velocity error ellipses (<b>−Se</b> or
<b>−Sr</b>). [If <b>−E</b> is not specified, the
uncertainty regions will be transparent.]</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−G</b><i>fill</i></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Select filling of
ellipses, wedges, and focal mechanisms. By convention, the
compressional quadrants of the focal mechanism beach balls
are shaded. Set the shade (0−255) or color (r/g/b)
[Default is 0/0/0]. Optionally, specify
<b>−Gp</b><i>icon_size/pattern</i>, where
<i>pattern</i> gives the number of the image pattern (1-90)
OR the name of a icon-format file. <i>icon_size</i> sets the
unit size in inches. To invert black and white pixels, use
<b>−GP</b> instead of <b>−Gp</b>. See
<b>pspatterns</b> for information on individual
patterns.</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−H</b></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Input file(s) has
header record(s). If used, the default number of header
records is <b><A HREF="gmtdefaults.html#N_HEADER_RECS">N_HEADER_RECS</A></b>. Use <b>−Hi</b> if
only input data should have header records [Default will
write out header records if the input data have them]. Blank
lines and lines starting with # are always skipped.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−K</b></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">More
<i>PostScript</i> code will be appended later [Default
terminates the plot system].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−L</b></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Draw lines.
Ellipses and fault planes will have their outlines drawn
using current pen (see <b>−W</b>).</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="9%">
<p style="margin-top: 1em" valign="top"><b>−N</b></p> </td>
<td width="2%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Do <b>NOT</b> skip
symbols that fall outside the frame boundary specified by
<b>−R</b>.</p> </td>
</table>
<p style="margin-left:22%;">[Default plots symbols inside
frame only].</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−O</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Selects Overlay
plot mode [Default initializes a new plot system].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−P</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Selects Portrait
plotting mode [Default is Landscape, see <b><A HREF="gmtdefaults.html">gmtdefaults</A></b>
to change this].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−U</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Draw Unix System
time stamp on plot. By adding <i>just/dx/dy/</i>, the user
may specify the justification of the stamp and where the
stamp should fall on the page relative to lower left corner
of the plot. For example, BL/0/0 will align the lower left
corner of the time stamp with the lower left corner of the
plot. Optionally, append a <i>label</i>, or <b>c</b> (which
will plot the command string.). The <b><A HREF="GMT.html">GMT</A></b> parameters
<b><A HREF="gmtdefaults.html#UNIX_TIME">UNIX_TIME</A></b>, <b><A HREF="gmtdefaults.html#UNIX_TIME_POS">UNIX_TIME_POS</A></b>, and
<b><A HREF="gmtdefaults.html#UNIX_TIME_FORMAT">UNIX_TIME_FORMAT</A></b> can affect the appearance; see the
<b><A HREF="gmtdefaults.html">gmtdefaults</A></b> man page for details. The time string
will be in the locale set by the environment variable
<b>TZ</b> (generally local time).</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−V</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Selects verbose
mode, which will send progress reports to stderr [Default
runs "silently"].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−W</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Set pen attributes
for velocity arrows, ellipse circumference and fault plane
edges.</p> </td>
</table>
<p style="margin-left:22%;">[Defaults: width = 1, color =
0/0/0, texture = solid].</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p style="margin-top: 1em" valign="top"><b>−X
−Y</b></p> </td>
<td width="4%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Shift plot origin
relative to the current origin by (<i>x-shift,y-shift</i>)
and optionally append the length unit (<b>c</b>, <b>i</b>,
<b>m</b>, <b>p</b>). You can prepend <b>a</b> to shift the
origin back to the original position after plotting, or
prepend <b>r</b> [Default] to reset the current origin to
the new location. If <b>−O</b> is used then the
default (<i>x-shift,y-shift</i>) is (0,0), otherwise it is
(r1i, r1i) or (r2.5c, r2.5c). Alternatively, give <b>c</b>
to align the center coordinate (x or y) of the plot with the
center of the page based on current page size.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p style="margin-top: 1em" valign="top"><b>−:</b></p> </td>
<td width="4%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Toggles between
(longitude,latitude) and (latitude,longitude) input and/or
output. [Default is (longitude,latitude)]. Append <b>i</b>
to select input only or <b>o</b> to select output only.
[Default affects both].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p style="margin-top: 1em" valign="top"><b>−c</b></p> </td>
<td width="4%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Specifies the
number of plot copies. [Default is 1].</p></td>
</table>
<a name="EXAMPLES"></a>
<h2>EXAMPLES</h2>
<p style="margin-left:11%; margin-top: 1em">The following
should make big red arrows with green ellipses, outlined in
red. Note that the 39% confidence scaling will give an
ellipse which fits inside a rectangle of dimension Esig by
Nsig.</p>
<p style="margin-left:11%; margin-top: 1em"><b>psvelo</b>
<< END <b>−H</b>2 <b>−R</b>-10/10/-10/10
<b>−W</b>0.25p,red <b>−G</b>green <b>−L
−Se</b>0.2/0.39/18 <b>−B</b>1g1
<b>−Jx</b>0.4/0.4 <b>−A</b>0.1/0.3/0.3
<b>−P −V</b> >! test.ps <br>
Long. Lat. Evel Nvel Esig Nsig CorEN SITE <br>
(deg) (deg) (mm/yr) (mm/yr) <br>
0. -8. 0.0 0.0 4.0 6.0 0.500 4x6 <br>
-8. 5. 3.0 3.0 0.0 0.0 0.500 3x3 <br>
0. 0. 4.0 6.0 4.0 6.0 0.500 <br>
-5. -5. 6.0 4.0 6.0 4.0 0.500 6x4 <br>
5. 0. -6.0 4.0 6.0 4.0 -0.500 -6x4 <br>
0. -5. 6.0 -4.0 6.0 4.0 -0.500 6x-4 <br>
END <br>
This example should plot some residual rates of rotation in
the Western Transverse Ranges, California. The wedges will
be dark gray, with light gray wedges to represent the
2-sigma uncertainties.</p>
<p style="margin-left:11%; margin-top: 1em"><b>psvelo</b>
<<END <b>−Sw</b>0.4/1.e7 <b>−W</b>0.75p
<b>−G</b>darkgray <b>−E</b>lightgray
<b>−H</b>1 <b>−D</b>2 <b>−Jm</b>2.2
<b>−R</b>240./243./32.5/34.75
<b>−B</b>f10ma60m/WeSn <b>−P</b> >! test.ps
<br>
lon lat spin(rad/yr) spin_sigma (rad/yr) <br>
241.4806 34.2073 5.65E-08 1.17E-08 <br>
241.6024 34.4468 -4.85E-08 1.85E-08 <br>
241.0952 34.4079 4.46E-09 3.07E-08 <br>
241.2542 34.2581 1.28E-07 1.59E-08 <br>
242.0593 34.0773 -6.62E-08 1.74E-08 <br>
241.0553 34.5369 -2.38E-07 4.27E-08 <br>
241.1993 33.1894 -2.99E-10 7.64E-09 <br>
241.1084 34.2565 2.17E-08 3.53E-08 <br>
END</p>
<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>
<p style="margin-left:11%; margin-top: 1em"><i><A HREF="GMT.html">GMT</A></i>(1),
<i><A HREF="psbasemap.html">psbasemap</A></i>(1), <i><A HREF="psxy.html">psxy</A></i>(1)</p>
<a name="REFERENCES"></a>
<h2>REFERENCES</h2>
<p style="margin-left:11%; margin-top: 1em">Bomford, G.,
Geodesy, 4th ed., Oxford University Press, 1980.</p>
<a name="AUTHORS"></a>
<h2>AUTHORS</h2>
<p style="margin-left:11%; margin-top: 1em">Kurt Feigl <br>
CNRS UMR 5562 <br>
Toulouse, France <br>
(Kurt.Feigl@.cnes.fr) <br>
Genevieve Patau <br>
CNRS UMR 7580 <br>
Seismology Dept. <br>
Institut de Physique du Globe de Paris <br>
(patau@ipgp.jussieu.fr)</p>
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