<!-- Creator : groff version 1.19.2 --> <!-- CreationDate: Tue Mar 8 16:22:31 2011 --> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta name="generator" content="groff -Thtml, see www.gnu.org"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta name="Content-Style" content="text/css"> <style type="text/css"> p { margin-top: 0; margin-bottom: 0; } pre { margin-top: 0; margin-bottom: 0; } table { margin-top: 0; margin-bottom: 0; } </style> <title>PSWIGGLE</title> </head> <body bgcolor="#ffffff"> <h1 align=center>PSWIGGLE</h1> <a href="#NAME">NAME</a><br> <a href="#SYNOPSIS">SYNOPSIS</a><br> <a href="#DESCRIPTION">DESCRIPTION</a><br> <a href="#OPTIONS">OPTIONS</a><br> <a href="#EXAMPLES">EXAMPLES</a><br> <a href="#BUGS">BUGS</a><br> <a href="#SEE ALSO">SEE ALSO</a><br> <hr> <a name="NAME"></a> <h2>NAME</h2> <p style="margin-left:11%; margin-top: 1em">pswiggle − Plot anomaly along track on a map</p> <a name="SYNOPSIS"></a> <h2>SYNOPSIS</h2> <p style="margin-left:11%; margin-top: 1em"><b>pswiggle</b> <i>xyz_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>−Z</b><i>scale</i> [ <b>−A</b><i>azimuth</i> ] [ <b>−B</b>[<b>p</b>|<b>s</b>]<i>parameters</i> ] [ <b>−C</b><i>center</i> ] [ <b>−D</b>[<b>x</b>]<i>gap</i> ] [ <b>−E</b><i>azim</i>/<i>elev</i>[<b>+w</b><i>lon</i>/<i>lat</i>[/<i>z</i>]][<b>+v</b><i>x0</i>/<i>y0</i>] ] [ <b>−G</b><i>fill</i> ] [ <b>−H</b>[<b>i</b>][<i>nrec</i>] ] [ <b>−Jz</b>|<b>Z</b><i>parameters</i> ] [ <b>−I</b><i>fix_az</i> ] [ <b>−K</b> ] [ <b>−N</b> ] [ <b>−O</b> ] [ <b>−P</b> ] [ <b>−S</b>[<b>x</b>]<i>lon0</i>/<i>lat0</i>/<i>length</i>[/<i>units</i>] ] [ <b>−T</b><i>pen</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>−c</b><i>copies</i> ] [ <b>−:</b>[<b>i</b>|<b>o</b>] ] [ <b>−bi</b>[<b>s</b>|<b>S</b>|<b>d</b>|<b>D</b>[<i>ncol</i>]|<b>c</b>[<i>var1</i><b>/</b><i>...</i>]] ] [ <b>−f</b><i>colinfo</i> ] [ <b>−m</b>[<b>i</b>|<b>o</b>][<i>flag</i>] ]</p> <a name="DESCRIPTION"></a> <h2>DESCRIPTION</h2> <p style="margin-left:11%; margin-top: 1em"><b>pswiggle</b> reads (<i>x</i>,<i>y</i>,<i>z</i>) triplets from files [or standard input] and plots z as a function of distance along track. This means that two consecutive (<i>x</i>,<i>y</i>) points define the local distance axis, and the local <i>z</i> axis is then perpendicular to the distance axis. The user may set a preferred positive anomaly plot direction, and if the positive normal is outside the plus/minus 90 degree window around the preferred direction, then 180 degrees are added to the direction. Either the positive or the negative wiggle may be shaded. The resulting <i>PostScript</i> code is written to standard output.</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"><i>files</i></p></td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">List one or more file-names. If no files are given, <b>pswiggle</b> will read standard input.</p></td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−J</b></p> </td> <td width="4%"></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 VI) <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>xmin</i>, <i>xmax</i>, <i>ymin</i>, and <i>ymax</i> specify the Region of interest. For geographic regions, these limits correspond to <i>west, east, south,</i> and <i>north</i> 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. For calendar time coordinates you may either give (a) relative time (relative to the selected <b><A HREF="gmtdefaults.html#TIME_EPOCH">TIME_EPOCH</A></b> and in the selected <b><A HREF="gmtdefaults.html#TIME_UNIT">TIME_UNIT</A></b>; append <b>t</b> to <b>−JX</b>|<b>x</b>), or (b) absolute time of the form [<i>date</i>]<b>T</b>[<i>clock</i>] (append <b>T</b> to <b>−JX</b>|<b>x</b>). At least one of <i>date</i> and <i>clock</i> must be present; the <b>T</b> is always required. The <i>date</i> string must be of the form [-]yyyy[-mm[-dd]] (Gregorian calendar) or yyyy[-Www[-d]] (ISO week calendar), while the <i>clock</i> string must be of the form hh:mm:ss[.xxx]. The use of delimiters and their type and positions must be exactly as indicated (however, input, output and plot formats are customizable; see <b><A HREF="gmtdefaults.html">gmtdefaults</A></b>).</p> </td> <tr valign="top" align="left"> <td width="11%"></td> <td width="3%"> <p style="margin-top: 1em" valign="top"><b>−Z</b></p> </td> <td width="8%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Gives anomaly scale in data-units/distance-unit.</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="7%"> <p style="margin-top: 1em" valign="top"><b>−A</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Sets the preferred positive azimuth. Positive wiggles will "gravitate" towards that direction.</p></td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−B</b></p> </td> <td width="4%"></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="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">Subtract <i>center</i> from the data set before plotting [0].</p></td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−D</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Means there is a data gap if 2 consecutive points are more than <i>gap</i> distance units apart. For geographic map projections the <i>gap</i> is assumed to be in km, else it is in the user’s units.</p></td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−E</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Sets the viewpoint’s azimuth and elevation (for perspective view) [180/90]. For frames used for animation, you may want to append <b>+</b> to fix the center of your data domain (or specify a particular world coordinate point with <b>+w</b><i>lon0</i>/<i>lat</i>[/<i>z</i>]) which will project to the center of your page size (or specify the coordinates of the projected veiw point with <b>+v</b><i>x0</i>/<i>y0).</i></p> </td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−G</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Set fill shade, color or pattern of positive wiggles [Default is black] (See SPECIFYING FILL below).</p></td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−H</b></p> </td> <td width="4%"></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="7%"> <p style="margin-top: 1em" valign="top"><b>−I</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Set a fixed azimuth projection for wiggles [Default uses track azimuth, but see <b>−A</b>].</p> </td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−K</b></p> </td> <td width="4%"></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="7%"> <p style="margin-top: 1em" valign="top"><b>−N</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Paint negative wiggles instead of positive [Default].</p></td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−O</b></p> </td> <td width="4%"></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="7%"> <p style="margin-top: 1em" valign="top"><b>−P</b></p> </td> <td width="4%"></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="7%"> <p style="margin-top: 1em" valign="top"><b>−S</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Draws a simple vertical scale centered on <i>lon0/lat0</i>. Use <b>−Sx</b> to specify cartesian coordinates instead. <i>length</i> is in z units, append unit name for labeling</p> </td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−T</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Draw track [Default is no track]. Append pen attributes to use [Defaults: width = 0.25p, color = black, texture = solid]. (See SPECIFYING PENS below).</p></td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−U</b></p> </td> <td width="4%"></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="7%"> <p style="margin-top: 1em" valign="top"><b>−V</b></p> </td> <td width="4%"></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="7%"> <p style="margin-top: 1em" valign="top"><b>−W</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Draw wiggle outline [Default is no outline]. Append pen attributes to use [Defaults: width = 0.25p, color = black, texture = solid]. (See SPECIFYING PENS below).</p></td> <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>−bi</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Selects binary input. Append <b>s</b> for single precision [Default is <b>d</b> (double)]. Uppercase <b>S</b> or <b>D</b> will force byte-swapping. Optionally, append <i>ncol</i>, the number of columns in your binary input file if it exceeds the columns needed by the program. Or append <b>c</b> if the input file is netCDF. Optionally, append <i>var1</i><b>/</b><i>var2</i><b>/</b><i>...</i> to specify the variables to be read. [Default is 3 input columns].</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> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−f</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Special formatting of input and/or output columns (time or geographical data). Specify <b>i</b> or <b>o</b> to make this apply only to input or output [Default applies to both]. Give one or more columns (or column ranges) separated by commas. Append <b>T</b> (absolute calendar time), <b>t</b> (relative time in chosen <b><A HREF="gmtdefaults.html#TIME_UNIT">TIME_UNIT</A></b> since <b><A HREF="gmtdefaults.html#TIME_EPOCH">TIME_EPOCH</A></b>), <b>x</b> (longitude), <b>y</b> (latitude), or <b>f</b> (floating point) to each column or column range item. Shorthand <b>−f</b>[<b>i</b>|<b>o</b>]<b>g</b> means <b>−f</b>[<b>i</b>|<b>o</b>]0<b>x</b>,1<b>y</b> (geographic coordinates).</p></td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> <p style="margin-top: 1em" valign="top"><b>−m</b></p> </td> <td width="4%"></td> <td width="78%"> <p style="margin-top: 1em" valign="top">Multiple segment file(s). Segments are separated by a special record. For ASCII files the first character must be <i>flag</i> [Default is ’>’]. For binary files all fields must be NaN and <b>−b</b> must set the number of output columns explicitly. By default the <b>−m</b> setting applies to both input and output. Use <b>−mi</b> and <b>−mo</b> to give separate settings to input and output.</p> </td> </table> <p style="margin-left:11%; margin-top: 1em"><b>SPECIFYING PENS</b></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 valign="top"><i>pen</i></p></td> <td width="7%"></td> <td width="78%"> <p valign="top">The attributes of lines and symbol outlines as defined by <i>pen</i> is a comma delimetered list of <i>width</i>, <i>color</i> and <i>texture</i>, each of which is optional. <i>width</i> can be indicated as a measure (points, centimeters, inches) or as <b>faint</b>, <b>thin</b>[<b>ner</b>|<b>nest</b>], <b>thick</b>[<b>er</b>|<b>est</b>], <b>fat</b>[<b>ter</b>|<b>test</b>], or <b>obese</b>. <i>color</i> specifies a gray shade or color (see SPECIFYING COLOR below). <i>texture</i> is a combination of dashes ‘-’ and dots ‘.’.</p></td> </table> <p style="margin-left:11%; margin-top: 1em"><b>SPECIFYING FILL</b></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="6%"> <p valign="top"><i>fill</i></p></td> <td width="5%"></td> <td width="78%"> <p valign="top">The attribute <i>fill</i> specifies the solid shade or solid <i>color</i> (see SPECIFYING COLOR below) or the pattern used for filling polygons. Patterns are specified as <b>p</b><i>dpi/pattern</i>, where <i>pattern</i> gives the number of the built-in pattern (1-90) <i>or</i> the name of a Sun 1-, 8-, or 24-bit raster file. The <i>dpi</i> sets the resolution of the image. For 1-bit rasters: use <b>P</b><i>dpi/pattern</i> for inverse video, or append <b>:F</b><i>color</i>[<b>B</b>[<i>color</i>]] to specify fore- and background colors (use <i>color</i> = - for transparency). See <b><A HREF="GMT.html">GMT</A></b> Cookbook & Technical Reference Appendix E for information on individual patterns.</p> </td> </table> <p style="margin-left:11%; margin-top: 1em"><b>SPECIFYING COLOR</b></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 valign="top"><i>color</i></p></td> <td width="4%"></td> <td width="78%"> <p valign="top">The <i>color</i> of lines, areas and patterns can be specified by a valid color name; by a gray shade (in the range 0−255); by a decimal color code (r/g/b, each in range 0−255; h-s-v, ranges 0−360, 0−1, 0−1; or c/m/y/k, each in range 0−1); or by a hexadecimal color code (#rrggbb, as used in HTML). See the <b><A HREF="gmtcolors.html">gmtcolors</A></b> manpage for more information and a full list of color names.</p></td> </table> <a name="EXAMPLES"></a> <h2>EXAMPLES</h2> <p style="margin-left:11%; margin-top: 1em">To plot the magnetic anomaly stored in the file track.xym along track @ 1000 nTesla/cm (after removing a mean value of 32000 nTesla), using a 15-cm-wide Polar Stereographic map ticked every 5 degrees in Portrait mode, with positive anomalies in red on a blue track of width 0.25 points, use</p> <p style="margin-left:11%; margin-top: 1em"><b>pswiggle</b> track.xym <b>−R</b>-20/10/-80/-60 <b>−JS</b>0/90/15<b>c −Z</b>1000 <b>−B</b>5 <b>−C</b>32000 <b>−P −G</b>red <b>−T</b>0.25<b>p</b>,blue <b>−S</b>1000 <b>−V</b> > track_xym.ps</p> <a name="BUGS"></a> <h2>BUGS</h2> <p style="margin-left:11%; margin-top: 1em">Sometimes the (x,y) coordinates are not printed with enough significant digits, so the local perpendicular to the track swings around a lot. To see if this is the problem, you should do this:</p> <p style="margin-left:11%; margin-top: 1em">awk ’{ if (NR > 1) print atan2(y-$1, x-$2); y=$1; x=$2; }’ yourdata.xyz | more</p> <p style="margin-left:11%; margin-top: 1em">(note that output is in radians; on some machines you need "nawk" to do this). Then if these numbers jump around a lot, you may do this:</p> <p style="margin-left:11%; margin-top: 1em">awk ’{ print NR, $0 }’ yourdata.xyz | <b>filter1d −Fb</b>5 <b>−N</b>4/0 <b>−−D_FORMAT</b>=<i>value</i> > smoothed.xyz</p> <p style="margin-left:11%; margin-top: 1em">and plot this data set instead.</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="gmtcolors.html">gmtcolors</A></i>(5), <i><A HREF="filter1d.html">filter1d</A></i>(1), <i><A HREF="psbasemap.html">psbasemap</A></i>(1), <i><A HREF="splitxyz.html">splitxyz</A></i>(1)</p> <hr> </body> </html>