Precisely Multi-Resolution Raster (MRR) (GDAL) Reader

The Multi-Resolution Raster (MRR) provides FME with access to data in the MRR format.

MRR Product and System Requirements



Operating System


FME Desktop License

FME Server

FME Cloud





Available in FME Professional Edition and higher



64-bit: Yes

64-bit: Yes



The Multi-Resolution Raster (MRR) format was originally developed as a unifying format, intended to encompass all types of raster data, such as image, classified, discrete, and continuous. Some key benefits of the MRR format:

  • Provides industry-standard compression techniques and predictive encoding techniques to minimize storage requirements and provide efficient data access to extremely large raster/grid datasets.
  • Stores numeric gridded data, imagery and classified (thematic) data.
  • Allows sparse data to be easily accessed and updated, without the need to store values for regions that do not contain data.

Reader Overview

FME considers a single MRR file to be a dataset.

FME Raster Features

FME raster features represent raster data and use several concepts that are unlike those used in the handling of vector data. The topics below describe how FME processes raster data.

About FME Rasters Tiling and Mosaicking
Raster Properties Band Combining and Separating
Band Properties Band and Palette Selection
Palette Properties Raster Processing
Compression Raster versus Vector Features
Pyramiding Raster File Naming
Interleaving World Files
Interpretation and Data Type TAB Files
Palette Resolution  

MRR datasets store one or more multi-banded fields.