Statistics Analysis Operation

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The Statistics Analysis operation will compute statistics for a selected field or bands in a raster input. It will write a text file report containing those computed statistics. The operation only supports the processing of a single raster file. If you select a raster source that contains multiple raster files, only the first file will be processed. Statistics analysis does not support batch processing.

Select a source raster for processing by either browsing to the file or by selecting a raster source. If you select a raster source that references multiple input rasters, only the first raster will be processed.

The operation will target a single selected field. You can compute the statistics for all bands in that field or for one selected band.

The computed statistics may be cached in an STTX file that is saved alongside the source raster. If so, you can view the statistics data using the Raster Source Editor dialog. The statistics will also be exported to a text report file. You need to specify the filename for this report.

The report will contain summary statistics for every band. This includes the number of valid cells, the minimum and maximum values, the mean, and many more. It will also contain histogram data. This is written into the report in a comma-delimited format.

The histogram contains many bins, each of which covers a numeric range. Put together, the bins cover the whole data range from the minimum to the maximum values in the raster. The width of each bin can vary. For this reason, we report the value for the bottom of the bin and the top of the bin. Within each bin, we also record the range of the actual data samples that lie in the bin. These are reported as the value bottom and value top. The number of samples that lie in the bin is reported. Also, the (cumulative) percentage of samples that lie in that bin, and all previous bins.