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Classifying According to Z Value

You can classify the layer according to Z value.

  1.  Double Double click the DSM layer in the Layers Panel to access the Layer Properties, then select the Style properties option:


    1. Under Band rendering change the Render type to Singleband pseudocolor and click Classify:


    2. Click Apply, then OK:

      The elevation values are displayed on the Layers Panel.

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  1. Select Processing → Toolbar:


  2. In the Processing Toolbox select GDAL/OGR [48 geoalgorithms] → [GDAL] Conversion → Polygonize (raster to vector):


  3. Click Run:


  4. The result displays the contour lines (vector) vectorized version of the DSM model: