Select nc variables for pygmt

Q&A PyGMT Q&A
3

Thanks.

I got the reason now. The var should not set like:

fig.grdimage(grid=grid?var,projection="Cyl_stere/150/-20/15c", region="g")

Instead, it should be:

grid = 'ncfilename?var'
fig.grdimage(grid=grid,projection="Cyl_stere/150/-20/15c", region="g")
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