Name of the source code file: ElmerDEM.c
Creates a (horizontally stair-stepped) mesh on a given Digital Elevation Model (DEM) that can contain a bedrock, surface as well as a thickness DEM (where one is redundant if all three are provided).
Usually cc stands for the system C-compiler. If not so, please, replace with the corresponding command of your system.
cc ElmerDEM.c -o ElmerDEM -lm
the -lm links the math-library (not necessary on some compilers)
displays information on options if no arguments are given.
ElmerDEM usage: ElmerDEM bedrock icethickness surface header output-dir layers Input files have to contain a digital elevation model of the /bedrock/, the /icethickness/ and the free /surface/; each consisting of N rows, containing M columns. Structure of /header/ file: ------------------------- minx miny dxy NoVal MinDepth gamma ------------------------- /minx/ and /miny/ give define the S-E corner point coordinates. /dxy/ declares the step-width in horizontal direction /NoVal/ numeric value declaring missing data /MinDepth/ is the minimum ice-depth (values below will be reset) /gamma/ is a nonlinearity factor. (gamma>0 concentrates elements near the bed). Rows are asumed to be aligned with W-E (x), columns with N-S (y) direction. Hence quadrilateral shape is asumed. output is written into directory /output-dir/. Final mesh will contain /layers/ element levels WARNING: files in an already existing output-directory may be overwritten!