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The easiest way to achieve this is to use a map package which will contain a map document (.mxd) and the data referenced by the layers it contains (a file geodatabase), packaged into one convenient, portable file (which is really just an archive you can unpack with archiving software such as 7Zip). Map packages can be used for easy sharing of maps ...
With the release of GDAL 1.10 this is now possible. It is done by performing a basic transformation in ogr2ogr and supplying the control points in the -gcp tag. http://www.gdal.org/ogr2ogr.html For a guide please see: http://gisforthought.com/georeferencing-vector-data-using-qgis-and-ogr2ogr/
You need to add in a variable for the QgsApplication. Try changing the beginning to this: QgsApplication.initQgis() app = QgsApplication(, True) Adding the app variable should fix your problem. Rendering and Labeling Shapefile with PyQGIS How to use map composer in a stand-alone script?
If you use ArcGIS, you could try CarryMap. It is a software tool to export a map from ArcGIS to a mobile device. It supports multiple raster layers. Although you cannot alter the transparency of layers on the mobile device, their transparency is preserved. So if the corresponding ArcGIS raster layers had a transparency setting, the raster is shown with ...
The Collector for ArcGIS supports maps with multiple tiled layers. It currently doesn't have offline maps but that will be supported in an update being released this month.
What you are looking for it is "swipe" functionality for QGIS. I'm sorry but still isn’t a plugin for that. In the meanwhile you can try this plugin: Raster Transparency. It allow you to change transparency interactively.
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