Take the 2-minute tour ×
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It's 100% free, no registration required.

I have a problem when using WMS layers. I'm usin QGIS. I'm loading a WMS layer containing some aerial images. And then on top of it another WMS layer that contains information of the city, boundaries etc with labels. When I load the WMS layer with the labels, the background goes blank and I can't visualise the aerial images.

I've tried the same thing in Arc and works fine but I have to use QGIS.

Cheers.

share|improve this question
    
Can you give more information on the WMS services. For example what software are they being served by? –  nmtoken Apr 28 at 9:04
    
Combining different WMS in one project shouldn't be a problem, I just tested this in QGIS 2.2.0. But they need to share a common projection (you might have to choose the correct one manually from the list) –  SAnderka Apr 28 at 9:17

1 Answer 1

up vote 7 down vote accepted

This happens to me when I started using QGIS 2.x. I then realize that the default parameter for the image format was set on JPEG and thus not allowing transparency (and I couldn't see the layers below).

When you click on the Add WMS layer icon and open the window with the parameter for the WMS layers, you have a parameter called " image encoding" below the list of layers: just check the PNG option (PNG allows for transparency) and it should solve the problem of the background going blank (or rather being covered, as I suspect).

This will work if you don't have any other issues of course, especially related to projection systems .

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.