# IsoHeightSurface
extract surface at constant height

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<title>data_in</title></rect>
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<text x="1.9em" y="0.8999999999999998em" class="text" >input gird or geometry with scalar data<tspan> (data_in)</tspan></text>
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<title>mapdata_in</title></rect>
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<text x="3.0999999999999996em" y="1.9em" class="text" >additional mapped field<tspan> (mapdata_in)</tspan></text>
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<title>data_out</title></rect>
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<text x="1.9em" y="6.8999999999999995em" class="text" >surface with mapped data<tspan> (data_out)</tspan></text>
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## Parameters
|name|description|type|
|-|-|-|
|iso_height|height above ground|Float|
|compute_normals|compute normals (structured grids only)|Int|
|heightmap|height map as geotif|String|