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<H1><A NAME="SECTION003010000000000000000"></A>
<A NAME="32432"></A>
<A NAME="32433"></A>
<BR>
M.1 Built-in color palette tables
</H1>
<P>
Figure <A HREF="#fig:GMT_App_M_1">M.1</A> shows each of the 22 built-in color palettes,
stored in so-called cpt tables.
The programs <A NAME="tex2html1878"
HREF="../man/makecpt.html"><I><B>makecpt</B></I></A><A NAME="32464"></A> and <A NAME="tex2html1879"
HREF="../man/grd2cpt.html"><I><B>grd2cpt</B></I></A><A NAME="32469"></A> are used to access these master cpt tables
and translate/scale them to fit the user's range of <IMG
WIDTH="10" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img20.png"
ALT="$z$">-values.
The top half of the color bars in the Figure shows the original color scale, which can be either discrete or
continuous, though some (like <B>globe</B>) are a mix of the two.
The bottom half the color bar is an example of a discrete color scale build by using
<A NAME="tex2html1880"
HREF="../man/makecpt.html"><I><B>makecpt</B></I></A><A NAME="32474"></A> <B>-T-1/1/0.25</B>.
<P>
<DIV ALIGN="CENTER"><A NAME="fig:GMT_App_M_1"></A><A NAME="32443"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure:</STRONG>
The standard 22 cpt files supported by <A NAME="tex2html1875"
HREF="http://gmt.soest.hawaii.edu"><B>GMT</B></A>.</CAPTION>
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<ADDRESS>
Paul Wessel
2010-01-14
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