1#!/usr/bin/env bash
2#               GMT EXAMPLE 42
3#
4# Purpose:      Illustrate Antarctica and stereographic projection
5# GMT modules:  makecpt, grdimage, coast, legend, colorbar, set, text, plot
6# Unix progs:   [curl grdconvert]
7#
8gmt begin ex42
9	gmt set PROJ_ELLIPSOID WGS-84
10	# Data obtained via website and converted to netCDF thus:
11	# curl http://www.antarctica.ac.uk//bas_research/data/access/bedmap/download/bedelev.asc.gz
12	# gunzip bedelev.asc.gz
13	# grdconvert bedelev.asc BEDMAP_elevation.nc=ns -V
14	gmt makecpt -Cearth -T-7000/4000
15	gmt grdimage @BEDMAP_elevation.nc -Jx1:60000000 -Q
16	gmt coast -R-180/180/-90/-60 -Js0/-90/-71/1:60000000 -Bafg -Di -W0.25p
17	gmt colorbar -DJRM+w6.5c/0.5c+o1c/0+mc -F+p+i -Bxa1000+lELEVATION -By+lm
18	# GSHHG
19	gmt coast -Glightblue -Sroyalblue2 -X5c -Y12c
20	gmt coast -Glightbrown -A+ag -Bafg
21	gmt legend -DjLM+w3.5c+jRM+o1c/0 -F+p+i <<- EOF
22	H 12 Legend
23	D 0.25c 1p
24	S 0.4c s 0.3c blue       0.25p 0.75c Ocean
25	S 0.4c s 0.3c lightblue  0.25p 0.75c Ice front
26	S 0.4c s 0.3c lightbrown 0.25p 0.75c Grounding line
27	EOF
28	# Fancy line
29	gmt plot -R0/19/0/25 -Jx1c -B0 -W2p -X-6c -Y-13.5c <<- EOF
30	0	14
31	6.5	14
32	13	11.5
33	19	11.5
34	EOF
35	gmt text -F+f18p+jBL -Dj8p/0 <<- EOF
36	0 13 BEDMAP
37	0 24 GSHHG
38	EOF
39gmt end show
40
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