Plotting great circles for points on map

Q&A
1

Hi,
I have plotted data points on map which are connected by great circles. Code and output figure are attached;

gmt begin Map png
gmt basemap -JM4i -R130/160/30/60 -Bxa5 -Bya5 -BWESN
# plot points as star symbol
gmt psxy -JM4i -R130/160/30/60 -Sa0.14i -Gbrown << EOF
132	54
158	56
135	40
150 	45
EOF
# draw great circle for points
gmt psxy -JM4i -R130/160/30/60 -W1.5,blue << EOF
132	54
158	56
>>
135	40
150 	45
EOF
gmt end

Map
Map1432×1874 37.6 KB

The great circles in figure may look like simple lines and have no enough curvature.

Is there a way by which user can increase curvature of great circles in GMT?

Thanks for help.

2

That looks about right to me. If you want something that looks like exaggerated great circle segments look into plot -W+s on how to plot Bezier splines.

3

Better link for Bezier splines:

The Cookbook on -W scroll down to +s.

4

Many thanks for your solution, it solved issue as per my need.