Toolbox

Improve DEM

Elevation
Improving the resolution of the DEM and simplifying the corresponding terrain isolines.
Demo
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The raster DEM file received when ordering NextGIS Data
Improvement of the DEM file resolution, in percents. Shows how much the pixel size should increase/decrease. For example, a value of 1000 % will result in 10 times smaller pixels
Nearest neighbor
The interpolation method used to enhance the DEM file
Vertical step of the contour lines in meters
Simplification step for the contour lines. Integer (for example, 2), decimal separated by a dot (for example, 0.02) or exponential notation (for example, 2e-2)

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Improves Digital Elevation Model, makes the resulting contour lines smoother and simpler.

Input, all fields are required:

  • Raster file - DEM file in TIFF format downloaded from NextGIS Data;

  • Interpolation method used to enhance the DEM file. Available methods:

    • Nearest neighbor (nearest)

    • Bilinear (bilinear)

    • Cubic (cubic)

    • Cubic spline (cubicspline)

    • Lanczos (lanczos)

    • Linear (average)

    • RMS (rms)

    • Mode (mode);

  • Interval between contours - Vertical step of the contour lines in meters;

  • Simplification step for the contour lines. Integer (for example, 2), decimal separated by a dot (for example, 0.02) or exponential notation (for example, 2e-2)

  • Refinement, % - Improvement of the DEM file resolution, in percents. Shows how much the pixel size should increase/decrease. For example, a value of 1000 % will result in 10 times smaller pixels

Output:

  • TIFF file of the refined DEM;

  • GeoPackage file of the contour lines.

_images/improvedem_input.png

Input raster

_images/improvedem_result.png

Processed raster and contours generated from it

Try the tool in action

  1. Click on the Demo button above the tool form. The fields are filled in with demo values.

  2. Click on the Run button.

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Elevation