I am a QGIS new user and I want to extract the buildings height of a territory. I clipped the raster with the LiDar informations with the buildings polygons; after I have extract the contours level inside each polygon.

Now I want to extract the maximum value (top of the roof) and the minimum value (base of the roof) and assign them to each polygon as attribute. How can I do it?

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    Do you have the unfiltered LiDAR information? Can you provide information regarding the LiDAR information you are using? Where was it sourced from? What have you tried? Commented Jan 25, 2018 at 9:19

1 Answer 1


Use the Zonal Statistics built in plugin.

raster>zonal statistics>zonal statistics.

Select the raster with the height data, and the vector layer with the building information.

Zonal Statistics

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