[gradsusr] Opening a file having overlapping longitude points.

[James T. Potemra]

Martin:

I was able to make both vector and shaded plots from this file using the 
attached ctl files.  Your errors below suggest that the data you are 
looking at have (perhaps) more than one missing value and/or values with 
"NaN".  I suspect you have a really large number somewhere.  If you try 
"set gxout grfill" instead, it might give you a clue where the point 
is.  If you did use the same file as attached, something else is going 
on (maybe an endian problem?).

Jim

On 3/29/11 9:25 PM, Martin V. Mathew wrote:
> Hai
>
>
> I created  descriptor files and able to open the file. Data displays 
> properly while
> using *gxout contour*. But is not  properly displaying  while using 
> *gxout vector**
> *and***gxout shaded. *
>
>
>
> 1) While trying to display data using 'gxout vector' command
>
>  In addition to plotting vectors corresponding to the data values, 
> Long arrows
>  originating from every missing value grid point and directed towards 
> left bottom
>  corner of figure.
>
>  How could this false arrows be removed?
>
> 2) Also while trying to display data using 'gxout shaded' command I 
> got the following error
>
> ---------------------------------------------------------------------------------
> ga-> set gxout shaded
> ga-> d uvel
> Contouring: -0.8 to 0.8 interval 0.2
> Logic error 8 in gxshad
> Error in gxshad
>
> I searched GrADS archives  and understood that '*Logic error 8 in 
> gxshad*'
> is due to nan values in the data. But there I couldn't get any 
> solution to solve the problem.
>
>
> I am also attaching a sample data and control files I used to open the 
> file with this mail.
>
>
> I am using GrADS Version 2.0.a6
>
>
> Please give me some suggestions.
>
>
>
> Thanking You
>
> Martin V. Mathew
> J.R.F.
> Centre for Oceans, Rivers, Atmosphere and Land Sciences (CORAL)
> IIT Kharagpur
> India.
>
>
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