How do I make raster layers (Tiff) transparent? To simply right click and choose properties does not work, I do not get the option of making it transparent when doing that. In the raster menu, there is a raster transparency option, but when I open this the bars are not active and nothing can be done. Is using a Tiff file a problem in QGIS 2.12, or can anyone please tell me how to do this?
Not sure what the problem is, I can access Layer Properties > Transparency and change the Global transparency and the Custom transparency options as answered by @Kersten.
Alternatively, you can use the Python Console to set your transparency:
rlayer = qgis.utils.iface.activeLayer() rlayer.renderer().setOpacity(0.5) # 0.5 = 50%; 0.1 = 90%... rlayer.triggerRepaint()
There's also the Raster Transparency and the rasparenza plugins which you can download and install from the toolbar (Plugins > Manage and Install Plugins).
Hope this helps!