Extracts the band and palette properties of a raster feature and adds them to a list attribute.

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Typical Uses

  • Extracting band and palette information from raster features

How does it work?

The RasterBandPropertyExtractor receives raster features, and extracts any existing band and palette properties. The results are added to a new list attribute (because a raster may have multiple bands), and output with the original feature.

The transformer has no parameters.

Property attributes include:













Wherever "{}" appears, there will be one instance of the attribute for each band or palette. The first will appear with {0}, the second with {1}, and so on.

If a raster band has no palettes, _band{}.band_num_palettes will be zero (0), and no further palette attributes will be added.

This transformer is unaffected by raster band and palette selection.


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

Note  Feature order may change in relation to other output ports. Feature order per port is maintained.


This transformer has no parameters.

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
Aliases RasterBandPropertiesExtractor

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