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For instance, subsampling with increment=2 will take into account one of each 2 point data in each direction, like shown in the figure hereafter.

Grid from Internet

It is possible GiD 14 incorporates the possibility to obtain a grid from the place of the world we want using:

Files->Import→Topography...

We must enter the latitude and longitude geographical coordinates of the location we are interested in. In case we do not know its coordinates is possible to try to find them based on the name of the place,

e.g. For instance, if we enter the name 'Barcelona' and press enter, the coordinates are filled with values lat=41.3828939 lon=2.1774322 degrees

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