3.2.12. Extract elevations from DEM

The extraction of elevations from DEM. Returns CSV with coordinates and altitude.

Inputs:

  • ZIP-compressed CSV - CSV table with coordinates of points. Delimiter should be comma. Corrdinates are floating values. File should not have spaces and should contain only latin symbols.

  • Latitude - fieldname for Latitude column. Case-sensitive.

  • Longitude - fieldname for Lonitude column. Case-sensitive.

  • Elevation dataset - select one of the following:

    • Copernicus

    • ALOS - ALOS World 3D has resolution of 30 meters

    • MERITDEM

    • GEBCO - resolution is 15 sec (about 500 meters).

Outputs:

  • ZIP-compressed CSV-file with coordinates and elevation values for the points.

To save a point layer as a CSV file with coordinates, during export in the Layer options section select for the GEOMETRY field the option AS_XY. The resulting file will have longitude in the X column and latitude in Y column.

../../_images/save_as_cvs_coord_en.png

Pic. 3.11. Exporting point layer as CSV

Launch the tool: https://toolbox.nextgis.com/t/demInPoints

Try it out using our sample:

Download input dataset to test the instrument. Step-by-step instructions included.

Get the output to additionally check the results.

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