View source for QGIS Importing a Grid

=Introduction=
The ESRI Arc/Info Grid (.asc) format is a widely used format for gridded datasets (such as DEMs and results files). The TUFLOW_to_GIS utility outputs in this file format.

=Method=
QGIS has native support for this format.
# ESRI grid (.asc) files can be directly opened in QGIS by selecting '''Layers >>> Add Raster Layer'''.
# Navigate to the desired file and select ''Open''.

The opened grid will be displayed in the projection of the project. This should be set to the projection of the grids, to change the projection of the project see [[QGIS_Setting_Projection | the Setting Project Projection page]].
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* The .asc file can also be dragged and dropped into the QGIS session, rather than using the Add Raster Layer option.
=Coloring / Shading=
Note that by default the   The default shading is grayscale so the import raster is likely to look gray.  To change  this to a simple colour shading right click on the layer in the layer control and select '''Properties'''.  In the '''Style''' tab, drop the colour map to '''Pseudocolor'''.
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[[File:QGIS raster display1.JPG|600px]]
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The raster grid should now have a color ramp applied.  More advanced coloring can be applied by using the '''Colormap''' option (this enables a colormap tab).
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[[File:QGIS raster display2.JPG|600px]]
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If you are viewing a DEM, you may also wish to apply a relief shading to give the DEM a more "3D" appearance, to do this see the [[QGIS_Relief_Shading | QGIS Relief Shading tip]].