Re: Vector Plot - Showing ZERO FIELD

From: Mary Haley <haley_at_nyahnyahspammersnyahnyah>
Date: Thu Aug 18 2011 - 11:24:30 MDT


The ncl-install email list is not the appropriate one for questions about NCAR Graphics. I recommend posting to ncarg-talk, but please see my message about using NCL instead.

If you are getting a ZERO FIELD, this may indicate something is wrong with your vector data. How is this data being read in or created?

For debug purposes, print the input vector values so you can compare these values against what you got on your SGI machine.

It sounds like you are using an old Fortran program, and I would recommend highly that you instead use NCL.

If you are getting your data from a NetCDF, then if you can provide me with a file, I'll see if I can create a small NCL program for you that creates a vector plot. I think you will find this program *much* simpler than an NCAR Graphics program.


On Aug 18, 2011, at 8:11 AM, Syed Hassan Gilani wrote:

> Hi,
> I have an ncarf77 program running on SGI Machine. The program is actually generating a Charts with Wind vectors via using VVINIT function.
> I have moved the application to AIX machine, but the same program doesnt work on AIX. Instead of plotting vector arrows its plotting ZERO FIELD on the chart.
> Following are the function parameters
> VVINIT ( 2D var, 1D var, 2D var, 1D var, 0, 1D var, 1D var, 1D var, 0, 0)
> Can help to advice on this, if possible (wat conditions could cause a ZERO FIELD flag to get enabled), tks
> Regards,
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Received on Thu Aug 18 11:25:22 2011

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