I know this question has been asked already... long time ago, though. When loading a large set of raster data and grouping them in QGIS i miss the opportunity to set basic properties for that group, such as transparency or contrast. Is there a more comfortable way to achieve this functionality apart from using console statements?
There is an existing feature request for this particular functionality. However, it was asked over 7 years ago and updated in the last year:
But there is a script available which sets the transparency of layers in a group. You can save this script into your
.qgis2/processing/scripts/ path and call it from the Processing Toolbox.