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<H2><A NAME="SECTION002642000000000000000"></A>
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K.4.2 The low resolution (<B>-Dl</B>)
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We have now reduced the map area by zooming in on the map center.
Now, the edges of the map are all 2000 km true distance from
the projection center. At this scale we choose the low resolution
data that faithfully reproduce the dominant geographic features
in the region. We cut back on minor features less than 100 km<IMG
WIDTH="11" HEIGHT="18" ALIGN="BOTTOM" BORDER="0"
SRC="img199.gif"
ALT="$^2$">
in area. We still add national borders to the plot. The low
database is less decimated and simplified by the DP-routine: The
total file size of the coastlines, rivers, and borders combined
grows to 876 Kbytes; it is the default resolution in <A NAME="tex2html726"
HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A>. The
plot is generated by the command:
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#!/bin/sh
# $Id: GMT_App_K_2.sh,v 1.1 2001/03/21 04:10:21 pwessel Exp $
#
pscoast `./getbox -JE130.35/-0.2/1i -2000 2000 -2000 2000` -JE130.35/-0.2/3.5i -P -Dl -A100 -G200 \
-W0.25p -N1/0.25tap -B10g5WSne -K > GMT_App_K_2.ps
./getrect -JE130.35/-0.2/1i -500 500 -500 500 | psxy -R -JE130.35/-0.2/3.5i -O -W1.5p -L -A \
>> GMT_App_K_2.ps
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<DIV ALIGN="CENTER"><A NAME="fig:GMT_App_K_2"></A><A NAME="15935"></A>
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<CAPTION ALIGN="BOTTOM"><STRONG>Figure K.2:</STRONG>
Map using the low resolution coastline data</CAPTION>
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<ADDRESS>
Paul Wessel
2001-04-18
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