Re: Irregular grids in NCL

Dear Szymon,

In land_var.ncl, I noticed you are setting:

  res@tfDoNDCOverlay = True

When you do this, you are effectively telling NCL that you've already set up the
map projection to exactly match the projection of your data, and hence it ignores
any settings of sfXArray and sfYArray.

Try commenting this line out and rerunning your script.

--Mary

On Aug 21, 2012, at 6:06 AM, Szymon Jaranowski wrote:

> I'm trying to draw a simple landmask using NCL.
>
> First on a regular grid - it works fine.
> Some images (attached):
>
> 1. Plot of grid's nodes (plot of geographic coordinates): grid_reg.png
> 2. Result: land_reg.png
> 3. NCL script: land_reg.ncl
>
> Then I'm doing the same on a second grid. The second grid covers the same area,
> but is more dense and irregular. Zoom of upper left corner:
>
> 4. Zoom of upper left corner: grid_var_zoom.png
>
> As seen on the image, nodes are irregularily spaced, but still this grid is
> a cartesian product of 1D grids. The effect:
>
> 5. Result: land_var.png
> 6. NCL script: land_var.ncl
>
> It seems sfXArray and sfYArray options are ignored - the data is plotted just
> like the spaces between the nodes where the same. Is it possible to draw plots
> on such grids in NCL?
>
> --
> With best regards,
> Szymon Jaranowski
> <grid_reg.png><grid_var_zoom.png><land_reg.ncl><land_reg.png><land_var.ncl><land_var.png>_______________________________________________
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Received on Tue Aug 21 09:26:42 2012