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# Buoy trajectory
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gmt psbasemap -P -JM14 -R30/120/-30/30 -B20 -X4 -Y10 -K > track.ps
gmt pscoast -J -R -B -Df -W -G200 -O -K >> track.ps
gmt psxy track.txt -J -R -B -W1,red -O >> track.ps

convert track.ps track.jpg