Extract by Mask
- The Extract by Mask command allows us to subset a raster using a shapefile (or another binary raster image: 1=keep, 0=remove).
- ArcToolbox > Spatial Analyst Tools > Extraction > Extract by Mask
- Input Raster: load the image you would like to clip
- Input Raster or Feature Mask: Point to an existing raster or vector dataset that represents the area to which you want to clip the image
- this can be a vector polygon or a raster image whose pixels are either 0 (do not include the pixel in the output image) or 1 (include the pixel in the output image)
- make sure that this dataset is in the same coordinate system as the image you are subsetting
- Output Raster: Specify the name of the new subsetted image that will be created
- Hit OK to process
