If you want to use raster calculator, try this: Con(IsNull(raster1),raster2, raster1) meaning that if raster1 has no value, it will use the value of raster2, otherwise it will use the value of raster1. You can see how it works using this link. Input false raster or constant value : InRas1. It does not require you to convert your current DEM into points. To set any cell with a value greater than 5 to NoData and have the remaining cells retain their original values, the following parameters could be used on the tool dialog box: Input conditional raster : InRas1. Under Expression, Type in Con and hit enter to enter your conditional statement. I have two raster files in ArcGIS 10.1, raster 1 and raster 2 all with values and similar spatial resolutions, and overlay in some areas. To fill the holes in the DEM I would recommend using the elevation void fill function.
It should go like this: R1 and R1 are input rasters, RN is output raster. In QGIS I'm trying to write an expression in the Raster Calculator, but I have failed so far. Numerical values and mathematical operators can be added to the expression by clicking the respective buttons in the tool dialog box. Use the Layers and variables list to select the datasets and variables to use in the expression. Add you DEM as the Raster Variable and assign a character to it (like x in my below image). Calculating values from two rasters using QGIS Raster Calculator. The Raster Calculator tool allows you to create and execute a Map Algebra expression that will output a raster.
ARCMAP RASTER CALCULATOR NODATA HOW TO
I like using Raster Functions as I can test the settings and I don't have to save the final output to disk.įrom Imagery tab, open up Raster Functions and search for Calculator. In the past, I did this with GIS and some neighbor tools for rasters, but I cant really find how to do this in FME. I will share with you the workflow I would follow to achieve this (but without adding the 1000).
ARCMAP RASTER CALCULATOR NODATA CODE
Con (raster 1, 1) a more generic code would be. Con (condition, value if true, value if false) will set the false value to Nodata if it is left blank.
If you want the original DEM values between 10, why do you want to add 1000? you can use raster calculator to set your 0 values to NoData.
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