Is there a way to merge ASC files into DEM?
Other way would be to use ASC files and to merge it to one DEM. If someone could give me information how to do it efficently or some detailed workflow would be great. I would say that the purpose of DEM will be to create a shaded relief as a background for printing 1:5000 maps.
How to convert a CSV file to ASCII XYZ?
Go Raster->Conversion->Translate and then set the output to ASCII XYZ from the drop-down menu when you specify the output file. An alternative ASCII format you may care to consider is the ESRI ASC format, which is smaller because it only lists the height (Z) and has a header which sets the raster origin and resolution.
How big is an ASC grid file in GB?
I have very detailed 27 ASC grid files with overall size of 9 GB created from 1m contours of large area (600 m2). The goal is to merge all this data into one DEM for easier handling (output will be smaller i think ?) and later to create a slope, hillshade color shaded reliefs ,etc for whole area easier.
Is there a way to merge multiple TIFF files?
On the File menu, click Merge Files. You’ll see Merge Files dialog window. Click Add Files to add your TIFF or PDF files in the list. Please arrange files in the order that you need to be in the output tiff file. For every file in the list you can: preview selected file. remove selected file from the list.
How to create a DEM from an ASCII file?
The output grid/lattice will not contain the exact values of the original ASCII file, since TINLATTICE is an interpolation process. a) Use DEFINE in Tables to create an empty INFO file with item definitions appropriate for the precision of the values in the ASCII file.
Can You import a DEM file into a surface?
DEM files come in several formats. You can import either USGS DEM, ESRI Arc Grid, or GeoTIFF files. Tip: You can also import DEM files into an existing surface. For more information, see To Add DEM Files to a Surface.