WMS GetLegendGraphic and keyimage size

[assefa]

e-mail from the list (Jörg Thomsen jt at mapmedia.de)

since an update from mapserver 4.x to 5.6 we have a problem with the keyimage of rasterlayers. The keyimage is unusually large, but with the old version it worked.

the original imagine is 451*1949 px the keysize in the mapfile is given with

KEYSIZE 450 1950

The image which is now delivered has a size of 472*1960px, most of this picture is white canvas, the original graphic is very small and placed at the lower left corner.

Any suggestions?

I found an older post meanwhile, so I am not the only one having this problem: ​http://lists.osgeo.org/pipermail/mapserver-users/2009-December/063947.html

Regards, Jörg

[assefa]

checking if I can reproduce ...

[assefa]

committed in trunk r9986.

I will attach the patch against 5.6: Jörg could you please build with it and make sure you get what you expect. I do not have 4.x to compare with but the patch seems to scale the images to what I am expecting. Please confirm that this works for you and I will patch 5.6.

Thanks

[assefa]

patch against 5.6 branch

[gislars]

I just tried the patch:

Although there is an change in size between the patched version and 5.6.3 it doesn't solve the problem

I put up some links to see the result, they are using the same mapfile:

5.4.2 ​http://www.lingner.eu/cgi-bin/ms542?&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetLegendGraphic&LAYER=510716GS&FORMAT=IMAGE/PNG

5.6.3 ​http://www.lingner.eu/cgi-bin/ms563?&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetLegendGraphic&LAYER=510716GS&FORMAT=IMAGE/PNG

5.6.3 patched ​http://www.lingner.eu/cgi-bin/ms563p?&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetLegendGraphic&LAYER=510716GS&FORMAT=IMAGE/PNG

svn (r9986) ​http://www.lingner.eu/cgi-bin/mssvn?&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetLegendGraphic&LAYER=510716GS&FORMAT=IMAGE/PNG

If necessary I can attach publish the mapfile

[assefa]

I tested with a keyimage using you 5.4.2 output. I added a fix (r10013) and I was able to produce a legend using the paramters:

• KEYSIZE 549 1960 (in the legend)
• keyimage "./images/ms542.png"

[gislars]

That looks much better. Great! The legend is big enough to be read. Although there is still a difference between 5.4.2 and current trunk You can use the above links, I just updated "mssvn" (the last one)

[assefa]

I see a bit of differences too. It may be related to work done #2917. I think It is in acceptable shape right now? If you agree I will back-port this change to 5.6.

[gislars]

I'm fine with it. Thanks for your help.

[assefa]

committed in 5.6 branch r10015