Calculates statistics on raster bands and adds the results as attributes.  

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Typical Uses

How does it work?

The RasterStatisticsCalculator receives raster features and calculates selected statistics on them individually. The results are output on each raster, and may be generated for Band, Palette, or both.

Available statistics include:

  • Minimum
  • Maximum
  • Mean
  • Sum
  • Range
  • Standard Deviation
  • Median
  • Mode

Band statistics are stored as attributes, named <band>.<statisticname>.

Palette statistics are calculated on resolved palette values, and are stored as list attributes, named <band>.<palette>.<statisticname>.

For both types of attribute, <statisticname> will be one of the following: min, max, range, mean, stdev, sum, median, mode.

For multi-band rasters, any additional bands beyond Band 0 must be explicitly specified for inclusion in the parameters dialog - Statistics to Calculate table, under Band Index.

To calculate raster statistics on a group of rasters as a single entity, merge them prior to this transformer with the RasterBandCombiner or RasterMosaicker.


Usage Notes

Choosing a Raster Transformer

FME has an extensive selection of transformers for working with raster data. They can be generally categorized as working with whole rasters, bands, cells or palettes, and those designed for workflow control or combining raster with vector data.

For information on raster geometry and properties, see Rasters (IFMERaster).


Input Ports

Output Ports


Editing Transformer Parameters

Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click beside the applicable parameter. For more information, see Transformer Parameter Menu Options.

Defining Values

There are several ways to define a value for use in a Transformer. The simplest is to simply type in a value or string, which can include functions of various types such as attribute references, math and string functions, and workspace parameters. There are a number of tools and shortcuts that can assist in constructing values, generally available from the drop-down context menu adjacent to the value field.

Dialog Options - Tables

Transformers with table-style parameters have additional tools for populating and manipulating values.


Processing Behavior


Feature Holding


Dependencies None

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Examples may contain information licensed under the Open Government Licence – Vancouver and/or the Open Government Licence – Canada.