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Once the option is selected, the Generate DEM form will appear as shown in Figure 3. From this form, the user click on Add File then browse to the digital elevation data file (*.xyz). Once loaded, the coordinates of the Lower-Left and Upper-Right points will be updated as well as the Cell Size and Number of Cells, the user can change the Cell Size then click on the Calculator symbol to update the Number of Cells and vice versa. the The more number of cells the higher resolution of the DEM file. The There are three options for DEM file output format for the generated DEM files is TB2, as TB2, ArcGIS ASCII Grid, and Surfer ASCII Grid. Select one from those options then click the Generate DEM button to start generating DEM file.
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