<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Sorry, you're right, I should have clarified that I'm still using OpenGrADS 2.0.2.</div><div><br></div><div>Joey</div><div><br>On Mar 21, 2016, at 11:53 AM, AMS EmsiWx Bytča <<a href="mailto:emsiwx@pocasie-bytca.sk">emsiwx@pocasie-bytca.sk</a>> wrote:<br><br></div><blockquote type="cite"><div>
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Thank you very much Jennifer<br>
<br>
M.<br>
<a class="moz-txt-link-abbreviated" href="http://www.pocasie-bytca.sk">www.pocasie-bytca.sk</a><br>
<br>
<div class="moz-cite-prefix">Dňa 21. 3. 2016 o 17:24 Jennifer M
Adams napísal(a):<br>
</div>
<blockquote cite="mid:F09328FA-9EC3-4F4A-A1A7-8BE80C8346D7@gmu.edu" type="cite">
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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.
<div><br>
</div>
<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>
<div><br>
<div>
<div>
<div>On Mar 21, 2016, at 12:01 PM, Joey Woodson <<a moz-do-not-send="true" href="mailto:instantweathermaps@gmail.com"></a><a class="moz-txt-link-abbreviated" 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>
<br>
Joey Woodson<br>
<a moz-do-not-send="true" href="http://InstantWeatherMaps.com">InstantWeatherMaps.com</a><br>
<br>
<blockquote type="cite">On Mar 21, 2016, at 8:01 AM,
AMS EmsiWx Bytča <a class="moz-txt-link-rfc2396E" href="mailto:emsiwx@pocasie-bytca.sk"><emsiwx@pocasie-bytca.sk></a>
wrote:<br>
<br>
Dear Grads users,<br>
<br>
is it possible to reduce png file size from Grads by
setting png <br>
quality/compression?<br>
<br>
Thank you for your time and help.<br>
<br>
Kindest regards,<br>
<br>
Marian<br>
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</blockquote>
<br>
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</blockquote>
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<br>
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<div style="color: rgb(0, 0, 0); letter-spacing: normal;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows:
auto; word-spacing: 0px; -webkit-text-stroke-width:
0px; word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;">
<div style="color: rgb(0, 0, 0); letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; word-wrap:
break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;">
<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>
<br>
<br>
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<br>
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</pre>
</blockquote>
<br>
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