[ncl-talk] Strange stippling behaviour when valid points are few and scattered apart

[Rashed Mahmood]

Jonathan,
Please look at the if statement that was introduced just to play with it a
bit. Please have a look at the plot named *_Original.pdf. This is what the
question is about.

Rashed

On Wed, Jul 1, 2020 at 6:03 PM Buzan, Jonathan <jbuzan at purdue.edu> wrote:

> Hi Rashed,
>
> Looking at your script, it looks like the stipple is doing exactly what
> you said it to do:
>
>       do n=0,20
>          sig({n},:) = 95.01
>       end do
>
>
> You set  resS at cnLevels             =(/ 95.,100. /)
>
> The {n} in sig({n},:) means to set the latitudes 0-20 to 95.01. And the
> stipple is greater than 95. But lower than 100. So it stippled from 0-20
> latitude.
>
> -Jonathan
>
>
>
>
> > On Jul 1, 2020, at 5:57 PM, Rashed Mahmood via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
> >
> > Hi NCL,
> >
> > I encountered strange stippling behaviour when valid data points are
> very few and are scattered apart from each other. At best I would expect no
> stippling overlaid on a filled map, however, it seems that NCL somehow
> covers the whole map with stippling.
> >
> > To explain this, I created a small example script (attached) which reads
> data from the attached file. To play with it a bit, I just added some "fake
> data" to see what happens. In the script we could set it using
> "add_bogus_data = True".
> > Attached are two plots after using original data and adding some fake
> data. I am not sure what is going on here, anyone? Ignore the file names!!
> >
> > Cheers
> > Rashed
> >
> > <funny_stiple.ncl><tst_diff.nc
> ><Mask_TEST_Original.pdf><Mask_TEST_Bogus.pdf>_______________________________________________
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>
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