[ncl-talk] "RasterFill" not plotting field

[Ryan Connelly]

Hi Mary,

Surprisingly, it started plotting when I got into the office today.  I
don't know either; it must be a Christmas miracle.

But now I have a new problem.  I have my MGPV variable subset to just
negative values using "where", and want to plot the resultant field of only
negative MGPV values in gold.  However, when using RasterFill, it defaults
to plotting in pink, no matter what I try.  I do the same process with RH,
but since it is not a RasterFill, is plots in green as expected.  If I add
the line opts at cnFillMode                = "RasterFill" to the relative
humidity opts, it overrides my request and plots in clown colors, so I know
that this is an error specific to RasterFill plotting.  I suspect it may be
a bug.  Below are my opts for MGPV plotting, which I would like to appear
in solid color gold:

; Plotting options for mgpv
        opts_pv = res
        opts_pv at cnLineLabelsOn = False
        opts_pv at cnConstFLabelPerimOn = False
        opts_pv at cnLabelMasking = True
        opts_pv at cnInfoLabelOn = False
        opts_pv at cnLineLabelPerimOn = False
        opts_pv at cnLinesOn = False
        opts_pv at pmLabelBarOrthogonalPosF = -0.07
        opts_pv at cnFillMode                = "RasterFill"
        opts_pv at cnFillOn                = True
        opts_pv at cnRasterSmoothingOn     = True
        opts_pv at lbLabelBarOn    = False ; Do not display label bar
        opts_pv at cnMonoFillColor = True
        opts_pv at cnFillColor = "gold"
        fill_mgpv = wrf_contour(a,wks,neg_mgpv,opts_pv)


Thanks,
Ryan

On Mon, Jan 2, 2017 at 9:14 AM, Mary Haley <haley at ucar.edu> wrote:

> Hi Ryan,
>
> You might try adding this resource, to have the raster plot generated a
> slightly different way:
>
> res at trGridType = "TriangularMesh"
>
> Still, I'm curious about why the plot is not showing up with raster fill.
> Is it sparse data?  It would be good to get the script and data if
> possible, so we can make sure it's not a bug.
>
> Thanks,
>
> --Mary
>
>
> On Thu, Dec 29, 2016 at 1:36 PM, Ryan Connelly <rconne01 at gmail.com> wrote:
>
>> Hi,
>>
>> I'm running a rather computationally intensive NCL script that attempts
>> to calculate and plot geostrophic MPV.  At times, it is (understandably)
>> very *very *slow, and at other times I have encountered an error about
>> workspace memory allocation being exceeded.  With regards to the latter, I
>> read a suggestion to change from...
>>
>>         opts_pv at cnFillOn                  = True
>>
>> ...to...
>>
>>         opts_pv at cnFillMode                = "RasterFill"
>>     opts_pv at cnRasterSmoothingOn       = True
>>
>> When doing so, the script executes much faster, but does not plot my
>> desired field.  (I printed out test points to confirm that the values are
>> within the range I tell it to plot in ContourParameters, so I know that is
>> not the problem.)
>>
>> Why might this be?
>>
>> Thanks,
>> Ryan
>>
>> --
>> Ryan Connelly
>> M.S. Student in Atmospheric Sciences, Stony Brook University
>> B.S. in Meteorology with Minors in Mathematics and GIS, Valparaiso
>> University
>> rconne01 at gmail.com
>> ryan.connelly at stonybrook.edu
>>
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>


-- 
Ryan Connelly
M.S. Student in Atmospheric Sciences, Stony Brook University
B.S. in Meteorology with Minors in Mathematics and GIS, Valparaiso
University
rconne01 at gmail.com
ryan.connelly at stonybrook.edu
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