Black map created when printing high quality...
I am trying to print a map using a REST call to Essentials 3.4. I have one cached map service (set to PNG32) , and a couple of dynamic layers as well. When I export a PDF using low and medium, all looks well. When I pick high quality, any areas not overlapped by features comes out all black. Has anyone experienced this before?
Thanks in advance!
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You probably need to setup the large format printing. This can be done within the essentials manager if you navigate to the print job for your site. This has been a known issue with the standard printing for sometime but setting up large format printing you can for the most part print as high of quality as you want.
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Does large format printing use the same print engine as non-large format printing? The quality appears to be different.
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I believe they are different print engines however I am not sure what the difference other than being able to handle larger amounts of data.
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The main difference is that the Large Format printing is done out-of-process, so that we don't have to haul all of those bitmaps around in the web server RAM.
I think the black map is caused by us running off the end of the available scale levels in the map (see (http://support.geocortex.com/printing-and-exporting-images-with-a-cached-service-) this article , which claims large format printing behaves differently, something I now doubt)
A possible solution could be to deploy a second Site to Essentials that uses dynamic map services - and use the templates out of that site. You'd have the extra management overhead of maintaining two sites, but you'd be able to provide a fast user experience (using the cached maps on-screen) with high resolution printing (only truly available with dynamic services).
We don't provide an easy way to do that now, but I'll ask around here to see if it's planned.
-Malcolm
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Malcolm,
Has there been any word on this issue? We are REALLY struggling with this problem. The caches are coming out black, and even if they do work in the smaller size pages (A4 etc) the quality from 96dpi is ordinary at best. We don't really want to have to have the user turn on a dynamic map equivalent, and turn the cache off as part of a printing workflow.
Would love to hear any news on this front please...
regards
Gareth
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We face this same issue as well. Our cached maps perform great and look nice, but we have to disable the larger print templates due to the black. Any word on the solution Malcolm presented above?
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Malcolm,
You identified a possible work around:
"A possible solution could be to deploy a second Site to Essentials that uses dynamic map services - and use the templates out of that site. You'd have the extra management overhead of maintaining two sites, but you'd be able to provide a fast user experience (using the cached maps on-screen) with high resolution printing (only truly available with dynamic services)."
Can you explain a bit more about this? If I understand correctly, the print template from the cached site would use the dynamic map services from a second site? How is this managed in the print template?
Thanks!
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Actually, the idea would be to have a separate dynamic site for printing and call the templates from this site. It is not possible for the print templates to print a site other than the one you have loaded, so you cannot call the dynamic print templates from the cached site.
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Jonathon,
Given the issue of print quality with caches, I've added an enhancement request as follows:
I'm hoping the quality can be improved!
GF
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