The amount of memory required to run the Region Group tool is not available. This tool can consume a lot of system resources, particularly if your input raster has a lot of small-scale variability.
Some suggestions to avoid this problem are as follows:
- Close down any unneeded applications to free up system resources.
- Increase the virtual memory allocation for your system.
- Reduce the size of your dataset to process it in sections.
- Simplify your data by filtering it. This can be done with tools such as Majority Filter, Aggregate, Shrink, and Focal Statistics.