Hi Uwe.
I hope I have an interesting question for you. Here it is.
I would like to put a background on a polar plot that scales automaticaly when you use the built in qwtpolar zoom function.
I have grabbed an osm file (open street map) using josm (java openStreetmap editor) from https://josm.openstreetmap.de/ and I have filtered it to only the info I want to see with osmfilter http://wiki.openstreetmap.org/wiki/Osmfilter then converted it to svg with Maperitive http://maperitive.net/. I have chosen svg because it is a format that Qt knows about ond should be scalable.
From what I gather:
If I set a background it does not change when I zoom?
If I set a place marker it does not change when I zoom?
Can a surface plot be an svg?
If anyone has a good idea or thinks this would be a good feature to add to qwtpolar speakup.
Thanks for your time , great work.
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