[ncl-talk] Removing 0,0 Coordinate Values from Scatterplot

[Zach Rieck]

Does the fill value need to be defined? And since I'm redefining a variable
does this require := rather than =?

Thanks again for the help!

-Zach Rieck
zrr817 at gmail.com
(513)-502-5652


On Fri, Jun 28, 2019 at 4:06 PM Adam Phillips <asphilli at ucar.edu> wrote:

> Hi Zach,
> Something like this should work:
> ; output1 and output2 are 1D arrays of the same length
> output1 = where(output1.eq.0.and.output2.eq.0,output1 at _FillValue,output1)
>
> That will set all points in output1 to _FillValue where both output1 and
> output2 are 0. Those points will not get plotted.
> (Note that this overwrites your output1 array, if you do not want that
> you'll want to copy output1 to say output1_save before doing the above.)
>
> If you have further questions let ncl-talk know.
> Adam
>
> On Fri, Jun 28, 2019 at 3:54 PM Zach Rieck via ncl-talk <ncl-talk at ucar.edu>
> wrote:
>
>> To whom it May Concern-
>>
>> I had a general question about how to change a scatter plot I have
>> created. The plot compares values from 2 model outputs relative to a 1:1
>> line for SLW, and since it is for a dry location, it has several 0,0
>> gridpoints (i.e. both models indicated no SLW was present).
>>
>> At the request of the leader of the project, I've been tasked with
>> removing those points from the plot. I was thinking about trying to use an
>> if then statement to try to reassign my plotting variables, but I'm unsure.
>>
>> Please advise. I framed this as a general question so I have not attached
>> code or data, but if that would be helpful to solving this question please
>> let me know.
>>
>> Respectfully,
>>
>> -Zach Rieck
>> zrr817 at gmail.com
>> (513)-502-5652
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>
>
> --
> Adam Phillips
> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>
> <http://www.cgd.ucar.edu/staff/asphilli>
>
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