Glad I could help, Jeff! MapServer.pdf is a great resource! -Matt
On Tue, Feb 21, 2023 at 1:02 PM Jeff McKenna <jmcke...@gatewaygeomatics.com> wrote: > Wonderful to hear that you are using the MapServer.pdf! (I actually put > much effort into maintaining that PDF output, that but I never hear > feedback...until someone reports a problem, like you did now, ha). > Sometimes my updates differ from website rebuilds, will be sure to > update the PDF for the upcoming 8.0.1 release. > > Again, thanks for this report! > > (also, don't be afraid to report doc issues like this at > https://github.com/MapServer/MapServer-documentation/issues ) > > thanks again for the report! > > -jeff > > > > > -- > Jeff McKenna > GatewayGeo: Developers of MS4W, MapServer Consulting and Training > co-founder of FOSS4G > http://gatewaygeo.com/ > > > > On 2023-02-21 12:52 p.m., Matthew Graber wrote: > > Hello all! > > > > With MapServer 8, I'm wondering what the proper way to change the > > opacity of a single layer in a multilayer WMS request is. > > > > For example, the following URL excerpt shows the old way of > > accomplishing this that worked while using MapServer 7: > > > > > SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image%2Fpng&LAYERS=test_a,test_b&map.layer[test_b]=OPACITY+50 > > > > My understanding is that this would have the same effect as adding > > "OPACITY 50" to the test_b layer in the mapfile. The mapfile containing > > test_a and test_b did not have OPACITY included when they were written. > > Obviously, this no longer works with MapServer 8, and now that request > > has the same results as omitting the "&map.layer[test_b]=OPACITY+50" > > portion entirely. > > > > Based on https://mapserver.org/fr/MIGRATION_GUIDE.html > > <https://mapserver.org/fr/MIGRATION_GUIDE.html>, I see that OPACITY now > > belongs inside a COMPOSITE object. I tried the following modifications > > to the request URL: > > > > > SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image%2Fpng&LAYERS=test_a,test_b&map.layer[test_b].composite=OPACITY+50 > > > SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image%2Fpng&LAYERS=test_a,test_b&map.layer[test_b].composite[0]=OPACITY+50 > > > > I also tried this both with the mapfile left as-is, and with an empty > > COMPOSITE object being included in each layer object, and each time I > > got the same unsuccessful result as before. > > > > Is there a way to accomplish this in MapServer 8? > > > > Also, does this map.layer[layername]=... syntax still work in MapServer > > 8? The documentation at > > https://mapserver.org/cgi/controls.html#using-mapserver-version-8 > > <https://mapserver.org/cgi/controls.html#using-mapserver-version-8> > > suggests it might no longer work for MapServer 8 (based on the heading > > "Using MapServer version < 8"), but the documentation at > > https://mapserver.org/pdf/MapServer.pdf > > <https://mapserver.org/pdf/MapServer.pdf> shows the same examples with > > the heading "Using MapServer version <= 8" on page 1065 of the PDF, so > > I'm unsure if this is still intended to work in MapServer 8. > > > > Thank you, > > Matt > > > > _______________________________________________ > > MapServer-users mailing list > > MapServer-users@lists.osgeo.org > > https://lists.osgeo.org/mailman/listinfo/mapserver-users > > _______________________________________________ > MapServer-users mailing list > MapServer-users@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/mapserver-users >
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