CAD tip # 9625:

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How to color 3D topo surface model by slope?

Using the add-on utility "CADstudio DTMcolSl" (free) you can automatically color your topographic digital terrain model (DTM) consisting of triangular 3DFACEs by its slope.

Just download Download, load it with APPLOAD and start the DTMCOLSL command. Select your model (or All) and choose one of the predefined color palettes (16-color, 256-color, rainbow, big rainbow, green, land, hydro or pastel colors). The tool will analyze the extreme slopes (minimum, maximum), calculates the color ramps and then the toposurface 3D model will be recolored automatically. You can limit the range of slopes - the parameter „range offset“ adjusts the palette range – you can narrow the coloring range by NN%.

See examples of the DTMcolSl results:

Source (e.g. from 3DPlot)

Big rainbow palette

See also the DTMcol utility - for elevations.

You can get similar results from the surfaces functionality in AutoCAD Civil 3D

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7.1.2014 20643×

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See also:
Tip 8406:	How to color 3D topo surface model by elevation?

Selected tip: How to influence line spacing in AutoCAD texts?

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