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I have map interfaces that use a dozen or so legend graphics, but it requires separate calls to mapserver for every user. I would prefer to cache these images (PNG) rather than make mapserver recalculate the same legend graphic many times for each user session.
But when I do a curl, I keep getting the "requires a TEMPLATE" message. The images work within my JS (OpenLayers 5.3), but not through a stand-alone web request.</div>
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Example: <a href="https://mrdata.usgs.gov/general/map-global.html">https://mrdata.usgs.gov/general/map-global.html</a> 27 calls to mapserv to get legend images that don't change.</div>
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Is there a way I can get these images and cache them on the server so that mapserver doesn't have to chew up processor cycles and time for them every time?</div>
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Thanks for any help you may be able to offer.</div>
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Peter</div>
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<span style="font-size: 14.6667px; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255);">Peter N. Schweitzer (U.S. Geological Survey, Reston, VA 20192)</span><br>
<span style="font-size: 14.6667px; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255);">(703) 648-6533 email: pschweitzer@usgs.gov</span><br>
<span style="font-size: 14.6667px; background-color: rgb(255, 255, 255);"><a href="https://www.usgs.gov/staff-profiles/peter-n-schweitzer" target="_blank" rel="noopener noreferrer" style="margin: 0px; text-align: left; background-color: rgb(255, 255, 255);">https://www.usgs.gov/staff-profiles/peter-n-schweitzer</a></span><br>
<span style="font-size: 14.6667px; background-color: rgb(255, 255, 255);"><a href="https://orcid.org/0000-0002-9532-6681" target="_blank" rel="noopener noreferrer" style="margin: 0px; text-align: left; background-color: rgb(255, 255, 255);">https://orcid.org/0000-0002-9532-6681</a></span><br>
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