Files with the RLA extension identify a WaveFront raster image file utilized by the San Diego Supercomputer Center (SDSC). RLS files store image data that is generated by various SDSC image tools used in the study of science. RLS files can be opened and edited with compatible software tools.
The rpf file extension is associated with 3Ds MAX, a modeling, animation and rendering package, developed by Autodesk Inc.. The RLA file format is a popular SGI format that supports the ability to include arbitrary image channels. While setting up a file for output, if you select RLA Image File from the list and click the Setup button, you'll go to the RLA setup dialog. Once there, you are able to specify what channels (and what format) you want to write out to the file.