Nodes-Raster

Menu: Files->Export->Nodes→Raster...

With this option a file is written with a raster object created from the current mesh nodes.

The size of the cell must be asked to the user.

The file is saved with Arc/Info grid ASCII format.

If the checkbox "Far points set nodata" is set, then grid points further of the distance specified will be set to a special nodata value (-9999 usually), and importing again the raster file won't generate grid surfaces or quadrilaterals