Setting the Cell Size (SA) for Results

The default cell size (or resolution) for analysis results is set to the largest cell size of the input raster datasets for a function—Maximum of Inputs.

The default cell size when a feature dataset is used as input to a function is to take the width or the height (whichever is shortest) of the extent of the feature dataset and divide by 250 to get 250 cells.

Exercise caution when specifying a cell size finer than the input raster datasets. No new data is created; cells are interpolated using nearest-neighbor resampling. The result is only as precise as the coarsest input.

The default cell size can be changed in the Environment Settings dialog. The cell size you specify will be applied to all subsequent results.

Other options available: Minimum of Inputs sets the cell size of your analysis results to the input raster dataset with the smallest cell size, As Specified Below enables you to specify a cell size for analysis results, and Same As Layer enables you to select an input raster layer on which to base the cell size of your analysis results.

For functions that accept nonraster data, you can specify the cell size for your output raster dataset directly on the function dialog box. The default is whatever is set in the Environment Settings dialog (whether this is the default or a cell size you specified).