[gradsusr] png quality/compression

[Joey Woodson]

Sorry, you're right, I should have clarified that I'm still using OpenGrADS 2.0.2.

Joey

> On Mar 21, 2016, at 11:53 AM, AMS EmsiWx Bytča <emsiwx at pocasie-bytca.sk> wrote:
> 
> Thank you very much Jennifer
> 
> M.
> www.pocasie-bytca.sk
> 
> Dňa 21. 3. 2016 o 17:24 Jennifer M Adams napísal(a):
>> Sorry, Joey, that is not correct. There are no compression settings for png images anywhere in GrADS. You may be confused with the compression level that is hard-coded for writing out netcdf-4 files. 
>> 
>> The png files generated by GrADS 2.1+ are large; I use the external utility pngquant to shrink them. For more info about about pngquant and GrADS, do a google search with “site:gradsusr.org pngquant” 
>> —Jennifer
>> 
>>> On Mar 21, 2016, at 12:01 PM, Joey Woodson <instantweathermaps at gmail.com> wrote:
>>> 
>>> Yes, but you have to change the source code and recompile GrADS. It's already on a fairly high compression setting by default if I recall correctly though.
>>> 
>>> Joey Woodson
>>> InstantWeatherMaps.com
>>> 
>>>> On Mar 21, 2016, at 8:01 AM, AMS EmsiWx Bytča <emsiwx at pocasie-bytca.sk> wrote:
>>>> 
>>>> Dear Grads users,
>>>> 
>>>> is it possible to reduce png file size from Grads by setting png 
>>>> quality/compression?
>>>> 
>>>> Thank you for your time and help.
>>>> 
>>>> Kindest regards,
>>>> 
>>>> Marian
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>> 
>> --
>> Jennifer Miletta Adams
>> Center for Ocean-Land-Atmosphere Studies (COLA)
>> George Mason University
>> 
>> 
>> 
>> 
>> 
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