[ncl-talk] Transparency

[jbuzan]

Hi Rick,

I never specified anything about the background in my scripts.  However, when the cluster switched to NCL6, I lost the transparency for the backgrounds of pdf figures.  
I’ll ask my cluster about NCL6.2.1.  

-Jonathan



On Dec 3, 2014, at 5:32 PM, Rick Brownrigg <brownrig at ucar.edu> wrote:

> 
> OK, your script fragment looks good   However, based upon the times at which wkBackgroundOpacity was implemented versus the dates of NCL release, it looks like this resource would have been first made broadly available in 6.2.0.   6.2.1 is the most recent NCL version.   Is it possible for you to upgrade?  
> 
> And given that, I'm not sure what would have changed between 5.x.x and 6.1.x that made transparent backgrounds unattainable (how did you specify that?)
> 
> Rick
> 
> On Wed, Dec 3, 2014 at 3:16 PM, jbuzan <jbuzan at purdue.edu> wrote:
> I’m using NCL6.1.0.
> 
> I call the wkstype as a environment variable:
> wkstype = getenv("WKSTYPE”)
> wkstype at wkBackgroundOpacityF = 0.0
> wks = gsn_open_wks(wkstype, outputfile)
> 
> warning:wkBackgroundOpacityF is not a resource in the given object
> 
> -Jonathan
> 
> 
> 
> On Dec 3, 2014, at 4:13 PM, Rick Brownrigg <brownrig at ucar.edu> wrote:
> 
>> Hi Jonathan,
>> 
>> Just to be clear, wk* resources are passed into the workstation at the time it is created:
>> 
>>     wkstype = "pdf"
>>     wkstype at wkBackgroundOpacityF = 0.0
>>     wks = gsn_open_wks(wkstype, "myPlotName")
>> 
>> Is that what you've tried?  I also forget when this resource was introduced, but its a relatively new feature, so the latest NCL version may be needed.
>> 
>> Rick
>> 
>> 
>> On Wed, Dec 3, 2014 at 1:00 PM, jbuzan <jbuzan at purdue.edu> wrote:
>> Hello NCL-talk,
>> 
>> I am attempting to make the background on my plots transparent.  However, I believe I am using the wrong resource.
>> 
>> res at cnMissingValFillPattern = “transparent”
>> wkstype at wkBackgroundOpacityF = 0.0
>> 
>> both give me warnings and do not make the background transparent.
>> 
>> I used to be able to have backgrounds transparent in NCL 5.  NCL 6 does not have this feature (or at least it is not default).
>> 
>> -Jonathan
>> 
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> 
> 

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