[ncl-talk] overlaying multiple datasets on a map

[Rick Brownrigg]

Mi Mark,

You might take a  look at the many examples at:

http://ncl.ucar.edu/Applications/overlay.shtml

The key ideas are to set these resources before drawing any plots:

res at gsnDraw = False
res at gsnFrame = False

...then draw your plots...

...then use the overlay() function to combine them

...then  call

draw(plot)
frame(wks)

to actually draw them (where "plot" is the variable-name of the base plot
and :wks" is the variable name of the workstation




On Mon, May 21, 2018 at 4:03 PM, M P <mzp3769 at gmail.com> wrote:

> Hello,
> I am using command below to overlay plots with
> data from aqual and terral
> map = gsn_csm_contour_map_overlay(wks,aqual,terral,res,res)
>
> I'd like to overlay other datasets on the map but
> gsn_csm_contour_map_overlay won't take more arguments.
> All data have the same lats and lons (=aqual and =terral)
>
> How can I do it?
> Thanks,
> Mark
>
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