How do I remove a specific value from a raster?
In ArcMap, in the table of contents, right-click the raster layer from which you want to remove the background and click Properties. Click the Symbology tab and click Unique Values from the Show list. Click the symbol that represents background (usually with a value of zero). Click Remove.
How do I trim a raster layer in ArcGIS?
Use the Clip tool
- In ArcToolbox, navigate to Data Management Tools > Raster > Raster Processing > Clip.
- In the Clip dialog box, select or browse to the grid as the Input Raster.
- Select or browse to the polygon feature class containing the polygon(s) to clip the grid as the Output Extent.
What can you do with a raster calculator?
The Raster Calculator tool allows you to create and execute a Map Algebra expression that will output a raster. Use the Rasters list to select the datasets and variables to use in the expression.
Can you use a raster calculator in ArcPy?
Builds and executes a single Map Algebra expression using Python syntax in a calculator-like interface. The Raster Calculator tool is intended for use in the application only as a GP tool dialog box or in ModelBuilder. It is not intended for use in scripting and is not available in the ArcPy Spatial Analyst module.
How to limit the values of a raster layer?
In ArcMap, click Search, and search for Raster Calculator. The Raster Calculator tool opens. In Raster Calculator, construct one of the following expressions: The expression below changes all cells with a value of less than zero to zero.
How to change the size of a rectangle in a raster?
1. In ArcMap, navigate to ArcToolbox > Spatial Analyst Tools > Map Algebra and open the Raster Calculator. 2. In Raster Calculator, input the following syntax: The size of the rectangle in the FOCALMEAN request can be edited to meet the needs of the data.