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In ArcGIS 10, how can I break raster symbology (stretched) at a particular value (i.e. 0). For example, I have a DEM representing both topography and bathymetry and I want a break at the 0 m contour line (shoreline) so the green colors represent positive elevation (land) and the blue colors represent values less than 0 (water depths). Similar to what Global Mapper offers.

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A manual method is suggested: The only help file I could find on raster symbology relevant to your question is here. However, the Classify button works the same when representing quantities as classified values as shown here for both vector and raster numerical values. In the Classification dialog, right-click on the graph and Insert Break then enter values in the right-hand Break Values box. Click OK, and back in the Layer Properties Symbology tab adjust the colors as needed.

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