The FME Knowledge Site

Raster

Working with raster data can be challenging not only because of the sheer size of the files but also because of the complexity of the operations that might be required to get it into a format suitable for viewing both internally and externally.

Collected here are a number of different examples of how to work with your raster data. For example -
  • Converting your raster data into the required format and coordinate system
  • Restructuring your data into the required form by clipping, mosaicking, tiling, offsetting, scaling and more
  • Processing large raster data volumes quickly
  • Preparing for raster data delivery through a web map tile cache or by offering self-serve data access over the web
  • etc

User-added image

 


Top Raster Samples & Demos

  • Alpha Compositing: Blending Two Raster Images

    Example showing how to mix the pixels of two images so that one image gradually transforms into the other using alpha band compositing.

  • Using Attribute Values in the RasterExpressionEvaluator

    How to use attribute values inside an expression in the RasterExpressionEvaluator transformer.

  • Elevation Zoning Scenario

    This example combines two types of rasters (a numeric DEM and a color RGB), it also shows how to bring the rasters to the same pixel size, and divide into zones depending on values in the ...

  • Combining Rasters with the RasterExpressionEvaluator

    Using the RasterExpressionEvaluator to combine two rasters. This can be done by copying cell values from one raster directly onto another or by creating a semitransparent overlay affect.

  • Change Detection with the RasterExpressionEvaluator

    How to use the RasterExpressionEvaluator for change detection. This example shows how to find what is added, deleted, or stayed the same between two rasters.

  • Using Conditions with the RasterExpressionEvaluator Transformer

    These examples demonstrate how to use conditions in the RasterExpressionEvaluator to isolation and perform operations on specific band values in a raster.

  • RasterMosaicking with Alpha Compositing

    Example of how to work with the RasterMosaicker's alpha compositing option.

  • Using the RasterTiler

    The RasterTiler transformer splits each input raster into a series of tiles by specifying either a tile size (Number of Columns and Number of Rows) or a number of tiles (Number of Horizont...

  • Raster To Raster Tutorial Example

    The article from FME Raster Tutorial shows a simple raster to raster conversion

  • Raster Clipping

    The article illustrates how to use vector clippers to clip rasters.


    • Browse More Articles


    Helpful Resources

    Readers and Writers Manual
    Explore this technical details of the raster readers and writers within FME.


    Transformers Reference Guide
    Check out the many transformers available for working with raster data.