ASC files can be used to store cell-based information that can be loaded into a raster layer of a MARS model. For example, a temperature layer can be created using information from an .asc file to define different temperatures across the simulation environment.
Here is an example of a .asc file with a four-by-four grid (
yllcorner define the x- and y-coordinate of the lower-left corner of the grid-cell array that is to stretch across the layer.
cell size defines the incremental size of a single cell. At the bottom of the file, the values of each cell are explicitly defined and separated by spaces.
ncols 4 nrows 4 xllcorner 30.5 yllcorner -26 cellsize 0.5 nodata_value -9999 17 20 23 25 16 21 24 25 16 22 24 25 21 23 24 24
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