SHP files are vectors, and we want a geoTIFF, which is a raster file. We will be rasterizing your SHP vectors to a geoTIFF.
Instructions
Open QGIS and import your .SHP file with z values, and a .PRJ file. Go to Layer > Add Layer > Add Vector Layer.
Once successfully imported, it should appear in the Layers pane of the software.
This is usually located on the left side of the user interface.
Change the following settings, then click Run.
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Shapes—this is the shape file you want to convert to raster
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Attribute—this is the elevation data (z values)
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Cellsize—this is the resolution of the output raster. The example is set to 1 m, but you can modify this as needed.
The converted raster file should now be added to the Layers pane.
Export it as a .GeoTIFF. Right-click on the layer > Export> Save As.
Select GeoTIFF format and your desired coordinate system. Click OK.
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