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==Extract Breaklines from DEM==
'''"-brkline <gis file in 2d_zsh format>"'''<br>
Extracts elevations from a DEM for breaklines in the 2d_zsh format. This GIS input should have four attributes, z, dz, width and shape_options, as described in the <u>[https://docs.tuflow.com/classic-hpc/manual/latest/ TUFLOW Manual]</u>. For the utility the '''dz''', '''shape_width''' and the '''shape_options''' are used. Valid shape_options are "Max" and "Min" or blank (average used). The utility
Depending on the line width and DEM cell size, the following methods are used:<br>
* If the width is set to 0, the closest DEM value to the vertex is used. If a "shape_option" is specified, this is ignored.
* If the width is greater than 0, but less than 1.5 times the DEM cell size, the four DEM values surrounding the vertex are used. If max or min is specified in the "shape_option" the max or min of the four values is used. If max or min option is not specified (attribute is blank), the average of the four values is used.
* If the width is greater than 1.5 times the DEM cell size, at each vertex a buffer region (search radius) is created and all non null DEM values within the buffer object are processed. The diameter of the buffer region is equal to the width specified. If max or min option is not specified, the average of the values within the region is used. These buffer regions are outputted as a separate file, if '''"-check"''' switch is specified in the batch command.<br>
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