Re: overlay

On Mon, 14 Jul 2008, James Correia wrote:

> I am using the overlay function to overlay 2 plots onto a base plot:
>
> plot = gsn_csm_vector_scalar_map( ...)
> plota = gsn_csm_vector_scalar_map( ...)
> plotb= gsn_csm_vector_scalar_map( ...)
>
> overlay(plot,plota)
> overlay(plot,plotb)
> draw(plot)
> frame(wks)
>
> This doesnt work and the error below appears twice.
>
> fatal:NhlAddOverlay: plot class mapPlotClass cannot be overlay plot member
>
> What am I missing?

Hi James,

A map plot can't be overlaid on another map plot. Generally, you only
want to create the map once, and overlay contours, vectors, or
streamlines.

I would try this:

  plot = gsn_csm_vector_scalar_map( ...)
  plota = gsn_csm_vector_scalar( ...)
  plotb = gsn_csm_vector_scalar( ...)

For plota and plotb, then, you will need to make sure you're
not setting map resources, or you will get lots of warning messages.

--Mary

> --
> James Correia Jr.
> Post Doc
> Climate Physics Group, PNNL
>
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Received on Mon Jul 14 2008 - 08:26:33 MDT