TUFLOW Output Discussion: Difference between revisions
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== Why are there differences between high resolution grid/raster map outputs and remapped outputs generated by the
Differences are expected between the direct HR output and the <u>[[ASC_to_ASC#Remap | remap function]]</u> in the asc_to_asc utility due to the different steps involved in the interpolation of water level results. <br>
The direct HR output is based on a triangulation of the water levels at the cell centres and corners. In comparison, the remap function involves two interpolation steps. The first is the interpolation from the cell centres and corners to the grid map output locations (by default, half the cell size). Then, the asc_to_asc utility interpolates the water level output to the target DEM grids with fine resolution: <br>
[[File:High-res-interpolation.jpg|600px]]<br>
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