[ncl-talk] NCL bug using set values

[Mary Haley]

​Hi Cathy,

None of the "gsnXXXXX" resources are recognized by setvalues or getvalues,
because the gsnXXXX resources are ones that the gsn_xxxx scripts recognize,
and not one that the core NCL language recognizes.

If you need to plot the data with the cyclic point added, but still be able
to use setvalues in the way that this example does, then you can try the
unadvertised gsn_add_cyclic_point function which is what "gsnAddCyclic"
uses "under the hood".

So, for example, instead of:

  t  = t(0,:,:)

use this:

  t  = gsn_add_cyclic_point(a->t(0,:,:))                     ; Read first
time step

and instead of:

    setvalues plot at data
      "sfDataArray" : (/a->t(i,:,:)/)
    end setvalues

use:

    setvalues plot at data
      "sfDataArray" : (/gsn_add_cyclic_point(a->t(i,:,:))/)
    end setvalues

--Mary



On Wed, Nov 19, 2014 at 12:44 PM, Cathy Smith (NOAA Affiliate) <
cathy.smith at noaa.gov> wrote:

> Hi-
> I followed this example
>
> https://www.ncl.ucar.edu/Applications/Scripts/animate_1.ncl
>
> to generate animations. If I set
>
> res at gsnAddCyclic       = True
>
> for the first plot, it is plotted correctly. But, subsequent plots all
> plotted incorrectly as it appears that set values didn't recognize the
> cyclic True setting.
> (The array values were stretched to fill the 1 longitude longer data
> array). We could verify this was the case as when we manually created an
> extra longitude for the data array after the first plot, then it worked.
>
> Can set values be made to use use the gsnAddCycle setting that exists?
> Or, is there another way that doesn't involve manually adding the extra
> longitude?
>
> Let me know if more info is needed. In this case, I was using V6.1.2
>
> Cathy Smith
>
>
>
>
> ----------------------------------------------
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