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Re: [ferret_users] plotting magnitude dependent symbols over 2D plot
This is what POLYMARK does:
shade/options/nokey [your_map_data]
! if your positions are variables "xlon,ylat", and the magnitudes to
be colored are "mag"
go polymark poly/over/nolab/fill/key/pal=[palette] xlon ylat mag
circle 0.3
You have a choice of symbol shape (here "circle") and size (final
argument). See the manual under polymark for a list of available shapes.
Complications are that xlon,ylat,mag must all be single-dimension
lists in the same shape/size. Perhaps force this by "xsequence(xlon)"
or "xsequence(xlon[j=1:40])" etc.
POLYMARK is very flexible for overlaying symbols and shapes on maps.
Billy K
On May 23, 2014, at 11:22 , Paul Goddard wrote:
Hello all,
I am attempting to plot ~40 points on top of a 2D shaded map. These
points represent magnitude of sea level rise at x,y coordinate. They
vary in magnitude. I would like to "overlay" the 40 points on the
shaded map. Furthermore, it would be great if I can "control" the
color of the points depending on their magnitude and also plot the
associated colorbar. Any ideas?
Thanks in advance,
Paul Goddard
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