GeoTiff2GridFloat

Most digital elevation models (DEMs) now come as GeoTiffs but some programs like my GMDE Desktop and GMDE Lite apps require that the onboard DEMs are in GridFloat format. GeoTiff2GridFloat is a one trick pony that converts a GeoTiff DEM to a GridFloat DEM. Just drop a Tiff DEM on the window of the app (or choose File>Open), click the Run Button, give the GridFloat file a name, and the program will translate the Tiff DEM to GridFloat, saving all three required files (.flt, .hdr, .prj) for the GridFloat format.

Behind the scenes, GeoTiff2GridFloat uses and requires that you have the GDAL geospatial libraries installed on your computer such that the app can find them automatically. See this page on the Mapscaping website for a good brief tutorial on installing GDAL. After the libraries are installed, you do not need to know any GDAL commands. The app will do the rest.

As the screen shot shows, using the program is literally a two step process: (1) Drop the file where it says GeoTiff File. The app will access the GDAL info about the file and put it inot the text box, below. Then, (2) click the Run button. The app will ask you to give the GridFloat file a name and specify where to save it. That is all there is to it! The three files that make up a GridFloat DEM will all have the root name that you specified in the save file dialog box and will all the in the folder/directory that you specified as well. Even large DEMs of 500 Mb or more will be translated in a second or two.