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- #!/usr/bin/env bash
- # GMT EXAMPLE 19
- #
- # Purpose: Illustrates various color pattern effects for maps
- # GMT modules: grdimage, grdmath, makecpt, coast, text, image, makecpt
- # Unix progs: echo, rm
- gmt begin ex19
- gmt grdmath -Rd -I1 -r Y COSD 2 POW = lat.nc
- gmt grdmath X = lon.nc
- gmt makecpt -Cwhite,blue -T0/1 -N -H > lat.cpt
- gmt makecpt -Crainbow -T-180/180 -H > lon.cpt
- gmt subplot begin 3x1 -Fs16c/0 -M0 -Bbltr -Rd -JI0/16c
- # First make a worldmap with graded blue oceans and rainbow continents
- gmt grdimage lat.nc -Clat.cpt -nl -c0,0
- gmt coast -Dc -A5000 -G
- gmt grdimage lon.nc -Clon.cpt -nl
- gmt coast -Q
- gmt coast -Dc -A5000 -Wthinnest
- echo "0 20 17TH INTERNATIONAL" | gmt text -F+f32p,Helvetica-Bold,red=thinner
- echo "0 -10 GMT CONFERENCE" | gmt text -F+f32p,Helvetica-Bold,red=thinner
- echo "0 -30 Honolulu, Hawaii, April 1, 2021" | gmt text -F+f18p,Helvetica-Bold,green=thinnest
- # Then show example of color patterns and placing a PostScript image
- gmt coast -Dc -A5000 -Gp86+fred+byellow+r100 -Sp@circuit.png+r100 -c1,0
- echo "0 30 SILLY USES OF" | gmt text -F+f32p,Helvetica-Bold,lightgreen=thinner
- echo "0 -30 COLOR PATTERNS" | gmt text -F+f32p,Helvetica-Bold,magenta=thinner
- gmt image -DjCM+w7.5c @GMT_covertext.eps
- # Finally repeat 1st plot but exchange the colors
- gmt grdimage lon.nc -Clon.cpt -nl -c2,0
- gmt coast -Dc -A5000 -G
- gmt grdimage lat.nc -Clat.cpt -nl
- gmt coast -Q
- gmt coast -Dc -A5000 -Wthinnest
- echo "0 20 17TH INTERNATIONAL" | gmt text -F+f32p,Helvetica-Bold,red=thinner
- echo "0 -10 GMT CONFERENCE" | gmt text -F+f32p,Helvetica-Bold,red=thinner
- echo "0 -30 Honolulu, Hawaii, April 1, 2021" | gmt text -F+f18p,Helvetica-Bold,green=thinnest
- gmt subplot end
- gmt end show
- rm -f lat.nc lon.nc lat.cpt lon.cpt
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