Identifies the palette key that matches a raster band’s Nodata value, and sets a value on it.

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Typical Uses

  • Adding or altering the representation of Nodata values on a palette.

How does it work?

The RasterPaletteNodataSetter receives raster features and sets a specified value on the palette key that matches the selected band’s Nodata value. That is, if the Nodata value is zero (0), it will find the palette entry with a key of zero (0) and change that entry’s value.

The raster band must have a Nodata value already set, and have a palette.

RGB, RGBA, and string palettes are supported.

This transformer supports raster band and palette selection. The RasterSelector can be used to modify selection.


Usage Notes

  • This transformer does not alter the Nodata value on the band. To set the Nodata value on the bands of a raster, use the RasterBandNodataSetter.

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

FME Community

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