lines from the corner

[Diane Stokes]

Adam,

Looking closely at your plot, I wonder if you have bad values at some
coastal points.

I suggest you zoom in on one of those areas and use gxout grid or print
to check that you have good values or the correct "missing" value at all
points.

If that's not the cause, what version of grads are you running?  A user
here encountered similar problems (with presumably good data) but his
plot was fine when he switched to version 1.9b4.

    Diane


Adam Sobel wrote:

> Hello,
>
> I have a data file (netcdf, opens fine with sdfopen) which when I try
> to make a contour plot, gives me straight lines from the corner which
> cover up the plot, which otherwise would look fine. Example attached.
> I suspect it has something to do with the fact that this data is all
> missing over the land (it is an ocean-only data set) but other than
> that can't see what's wrong. Changing the contour interval doesn't
> help. I found another post on this behavior in the archive but no one
> seems to have answered that one (a few years ago). Any insight
> appreciated.
>
> thanks
> Adam
>
> --
> Adam H. Sobel
> Department of Applied Physics and Applied Mathematics
> Department of Earth and Environmental Sciences
> Columbia University
> 500 W. 120th Street, Room 217
> New York, NY 10027
> tel: 212-854-6587
> fax: 212-854-8257
> e-mail: ahs129 at columbia.edu
> web: http://www.columbia.edu/~ahs129/home.html
>
>
> ------------------------------------------------------------------------
>

--
Diane Stokes
Environmental Modeling Center
National Weather Service/NOAA