1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<!--Converted with LaTeX2HTML 99.2beta8 (1.46)
original version by: Nikos Drakos, CBLU, University of Leeds
* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan
* with significant contributions from:
Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
<HTML>
<HEAD>
<TITLE>H.4 Hints</TITLE>
<META NAME="description" CONTENT="H.4 Hints">
<META NAME="keywords" CONTENT="GMT_Docs">
<META NAME="resource-type" CONTENT="document">
<META NAME="distribution" CONTENT="global">
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Generator" CONTENT="LaTeX2HTML v99.2beta8">
<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
<LINK REL="STYLESHEET" HREF="GMT_Docs.css">
<LINK REL="previous" HREF="node128.html">
<LINK REL="up" HREF="node125.html">
<LINK REL="next" HREF="node130.html">
</HEAD>
<BODY bgcolor="#ffffff">
<!--Navigation Panel-->
<A NAME="tex2html2858"
HREF="node130.html">
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.gif"></A>
<A NAME="tex2html2852"
HREF="node125.html">
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.gif"></A>
<A NAME="tex2html2848"
HREF="node128.html">
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.gif"></A>
<A NAME="tex2html2854"
HREF="node1.html">
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.gif"></A>
<A NAME="tex2html2856"
HREF="node149.html">
<IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="index.gif"></A>
<BR>
<B> Next:</B> <A NAME="tex2html2859"
HREF="node130.html">I. Color Space </A>
<B> Up:</B> <A NAME="tex2html2853"
HREF="node125.html">H. Problems with display</A>
<B> Previous:</B> <A NAME="tex2html2849"
HREF="node128.html">H.3 European characters</A>
  <B> <A NAME="tex2html2855"
HREF="node1.html">Contents</A></B>
  <B> <A NAME="tex2html2857"
HREF="node149.html">Index</A></B>
<BR>
<BR>
<!--End of Navigation Panel-->
<H1><A NAME="SECTION002340000000000000000">
H.4 Hints</A>
</H1>
<A NAME="14650"></A>
<P>
When making images and perspective views of large amounts of
data, the <A NAME="tex2html671"
HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> programs can take some time to run, the resulting
<I>PostScript</I> files can be very large, and the time to display
the plot can be long. Fine tuning a plot script can take lots
of trial and error. We recommend using <A NAME="tex2html672"
HREF="../grdsample.html"><I><B>grdsample</B></I></A><A NAME="14903"></A> to make
a low resolution version of the data files you are plotting, and
practice with that, so it is faster; when the script is perfect,
use the full-resolution data files. We often begin building a
script using only <A NAME="tex2html673"
HREF="../psbasemap.html"><I><B>psbasemap</B></I></A><A NAME="14912"></A> or <A NAME="tex2html674"
HREF="../pscoast.html"><I><B>pscoast</B></I></A><A NAME="14921"></A> to get
the various plots oriented correctly on the page; once this works
we replace the <A NAME="tex2html675"
HREF="../psbasemap.html"><I><B>psbasemap</B></I></A><A NAME="14930"></A> calls with the actually desired
<A NAME="tex2html676"
HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> programs.
<P>
If you want to make color shaded relief images and you haven't
had much experience with it, here is a good first cut at the
problem: Set your COLOR_MODEL to HSV using <A NAME="tex2html677"
HREF="../gmtset.html"><I><B>gmtset</B></I></A><A NAME="14942"></A>. Use
<A NAME="tex2html678"
HREF="../makecpt.html"><I><B>makecpt</B></I></A><A NAME="14951"></A> or <A NAME="tex2html679"
HREF="../grd2cpt.html"><I><B>grd2cpt</B></I></A><A NAME="14960"></A> to make a continuous color
palette spanning the range of your data. Use the <B>-Nt</B>
option on <A NAME="tex2html680"
HREF="../grdgradient.html"><I><B>grdgradient</B></I></A><A NAME="14970"></A>. Try the result, and then play with
the tuning of the <U>.gmtdefaults</U>, the cpt file, and
the gradient file.
<HR>
<!--Navigation Panel-->
<A NAME="tex2html2858"
HREF="node130.html">
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.gif"></A>
<A NAME="tex2html2852"
HREF="node125.html">
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.gif"></A>
<A NAME="tex2html2848"
HREF="node128.html">
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.gif"></A>
<A NAME="tex2html2854"
HREF="node1.html">
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.gif"></A>
<A NAME="tex2html2856"
HREF="node149.html">
<IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="index.gif"></A>
<BR>
<B> Next:</B> <A NAME="tex2html2859"
HREF="node130.html">I. Color Space </A>
<B> Up:</B> <A NAME="tex2html2853"
HREF="node125.html">H. Problems with display</A>
<B> Previous:</B> <A NAME="tex2html2849"
HREF="node128.html">H.3 European characters</A>
  <B> <A NAME="tex2html2855"
HREF="node1.html">Contents</A></B>
  <B> <A NAME="tex2html2857"
HREF="node149.html">Index</A></B>
<!--End of Navigation Panel-->
<ADDRESS>
Paul Wessel
2001-04-18
</ADDRESS>
</BODY>
</HTML>
|
