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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.
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<div>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”
<div>—Jennifer<br>
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<div>On Mar 21, 2016, at 12:01 PM, Joey Woodson <<a href="mailto:instantweathermaps@gmail.com">instantweathermaps@gmail.com</a>> wrote:</div>
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<blockquote type="cite">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.<br>
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Joey Woodson<br>
<a href="http://InstantWeatherMaps.com">InstantWeatherMaps.com</a><br>
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<blockquote type="cite">On Mar 21, 2016, at 8:01 AM, AMS EmsiWx Bytča <emsiwx@pocasie-bytca.sk> wrote:<br>
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Dear Grads users,<br>
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is it possible to reduce png file size from Grads by setting png <br>
quality/compression?<br>
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Thank you for your time and help.<br>
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Kindest regards,<br>
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Marian<br>
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<div style="font-size: 12px; orphans: 2; widows: 2;">--</div>
<div style="font-size: 12px; orphans: 2; widows: 2;">Jennifer Miletta Adams<br>
Center for Ocean-Land-Atmosphere Studies (COLA)<br>
George Mason University<br>
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