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I want to A. Import a map from the GIS add on or B. Use a height map. I want to then display only the contour lines of the terrain as shown in this image: enter image description here

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You could do something like this - Start by using your height map as a basis for displacement (true displacement - using cycles - make sure to set displacement in material settings and use heavily subdivided mesh). Next, use a wave texture on the Z axis (Object coordinates) and a ColorRamp as a Mix Factor between a Transparent and an Emission Shader:

Topolines

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  • $\begingroup$ Solved. Brilliant. Thank you. $\endgroup$ Jan 22, 2023 at 17:41

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