Splits each input raster into a series of tiles by specifying either a tile size in cells/pixels or the number of tiles.

Jump to Configuration

Typical Uses

  • Dividing a raster into smaller rasters
  • Reversing the action of a RasterMosaicker
  • Tiling rasters to match the extents of additional datasets to enable group processing
  • Tiling data to facilitate parallel processing

How does it work?

The RasterTiler accepts raster features, and divides them into smaller tiles according to the parameter selections.

Tile size can be defined by specifying tile dimensions in cells/pixels, or by specifying the number of tiles to create, both vertically and horizontally.

In either case, the tiles are measured from the upper-left origin (0,0) position. If tiling by Tile Size, the origin can be offset (Seed Column and Seed Row).

If the specified tile size results in partial (smaller) tiles along the right or lower edge, the Force Equal Sized Tiles option can pad smaller tiles with cells to match the full tile size.

Attributes may be added to the output tiled raster features, including an original raster index, row and column positions, and tile counts.

This transformer is unaffected by raster band and palette selection.

RasterTiler or Tiler?

The Tiler transformer also tiles rasters, and may be appropriate if you wish to tile based on ground coordinates instead of pixels or tile number division. This table compares the two:

  Tiler RasterTiler

Tiling extents

Cumulative over all features

Single feature

Type of data accepted

All types except surfaces and solids

Raster only

Tile size units

Ground coordinates

Pixel coordinates

Tile row numbering (0, 1,...)


Top to bottom

Supports forcing equal-size tiles



Supports raster index attribute



Supports number of horizontal/vertical tiles attribute




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).

Creating Boxes and Rectangles

Creating rectangular geometry is a common task. These transformers do so in a variety of ways.




Creates one or more new features with box geometry of a specific size and position (when Geometry Object is Box).


Replaces an existing feature’s geometry with a box of a specific size and position.


Creates one rectangle that encompasses all features received.


Individually replaces the geometry of each feature with a rectangle that covers its extents.


Individually replaces the geometry of each raster feature with a rectangle that covers its extents (with various Extents Type options).


Extracts the coordinate values that describe an individual feature’s bounding box (or cube) and stores them as attributes.


Creates a series of regularly-spaced rectangles that span the extent of all features received (when Type of Grid to Create is Polygons).


Creates a series of regularly-spaced rectangles of a specific size and position (when Type of Grid to Create is Polygons).

Tiler and RasterTiler

Do not create actual rectangles, but chop features into a series of rectangular tiles, specified in a similar fashion to the 2DGridAccumulator.


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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Search for all results about the RasterTiler on the FME Community.


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