Re: Shade land in oceanic plot

Hey Adam

I am plotting an lat vs sea-depth plot averaged over the longitudes

You are right, it does give _FillValue : 9.97e+36 on printVarSummary

But the 2 choices don't work. The plot remains the same.

Best Regards,

Vinit Asher
Email: vinit.asher_at_mavs.uta.edu
Cell: 817-201-2396

________________________________________
From: asphilli_at_ucar.edu [asphilli_at_ucar.edu]
Sent: Friday, April 10, 2009 2:17 PM
To: Asher, Vinit Narendra
Subject: RE: [ncl-talk] Shade land in oceanic plot

Hi Vinit,
I'm always happy to help, but it's usually best to respond to the ncl-talk
group, as someone might have a better idea than I do! That being said, are
you drawing a cross section (say lat x depth), or plotting ocean
temperature on a map?

As far as the land/_FillValue question: When you do a printVarSummary,
does it say your _FillValue : 9.97e+36 ? I bet it does.
Adam

> Hi Adam,
>
> Thanks for the information. How do I check if land = _FillValue in my data
> or not?
>
> I tried both ways. My plot remains unchanged. :(
>
> Best Regards,
>
> Vinit Asher
> vinit.asher_at_mavs.uta.edu
> ________________________________________
> From: Adam Phillips [asphilli_at_cgd.ucar.edu]
> Sent: Friday, April 10, 2009 12:34 PM
> To: Asher, Vinit Narendra
> Cc: ncl-talk_at_ucar.edu
> Subject: Re: Shade land in oceanic plot
>
> Hi Vinit,
> If the data over land = _FillValue, as I am guessing yours is, then all
> areas set to _FillValue are color filled with the background color, in
> most cases white.
>
> You have two choices that I can think of:
> 1) If the resource applies, and you are not setting cnFillMode =
> "RasterFill", then you can set cnMissingValFillColor = "transparent".
> http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnMissingValFillColor
> Make sure mpLandFillColor = "black"
>
> 2) Again, set mpLandFillColor = "black", and then set mpFillDrawOrder =
> "PostDraw", which will fill the land last, covering up whatever data
> color fill was present over land.
>
> Others might have other suggestions..
> Good luck,
> Adam
>
> Asher, Vinit Narendra wrote:
>> Hello,
>>
>> I have a oceanic data file where I am trying to plot the ocean
>> TEMPERATURE field
>>
>> The value of the field for regions where there is land is 9.97e+36
>>
>> However the displayed range of values for the variable (in ncview) shows
>> -1.46 to 34
>>
>> Could you help me figure out how to color the land black in the plot
>>
>> Best Regards,
>>
>> Vinit Asher
>> vinit.asher_at_mavs.uta.edu
>> _______________________________________________
>> ncl-talk mailing list
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
> --
> --------------------------------------------------------------
> Adam Phillips asphilli_at_ucar.edu
> National Center for Atmospheric Research tel: (303) 497-1726
> ESSL/CGD/CAS fax: (303) 497-1333
> P.O. Box 3000
> Boulder, CO 80307-3000 http://www.cgd.ucar.edu/cas/asphilli
>

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Received on Fri Apr 10 2009 - 13:24:58 MDT