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Montage-im6.q16: width or height exceeds limit31.07.20

if you get exceeds limit with imagemagick commandline
change the settings /etc/ImageMagick-6/policy.xml
you may need change file permission to 777

The method was to change the settings for Resource limits in the file handling that in ImageMagick, called policy.xml. In Ubuntu 18.04 that is found in /etc/ImageMagick-6. It is set as read-only, so I temporarily changed the write permissions with sudo chmod 777 policy.xml from within that folder. After making the changes, I switched the permission to 744

example file:

<policymap>
  
  <policy domain="resource" name="memory" value="14GiB"/>
  <policy domain="resource" name="map" value="30GiB"/>
  <policy domain="resource" name="width" value="16MP"/>
  <policy domain="resource" name="height" value="16MP"/>
  <policy domain="resource" name="area" value="40GP"/>
  <policy domain="resource" name="disk" value="30GiB"/>
  
  
  
  
  
  
  
  
  <policy domain="delegate" rights="none" pattern="URL" />
  <policy domain="delegate" rights="none" pattern="HTTPS" />
  <policy domain="delegate" rights="none" pattern="HTTP" />
  
  <policy domain="path" rights="none" pattern="@*"/>
  <policy domain="cache" name="shared-secret" value="passphrase" stealth="true"/>
</policymap>

https://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=34044&p=156413#p156413

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