CALS (*.cal;*.cals;*.ras)

A US government specified format for the interchange of raster documents. Most commonly used for CAD/CAM, technical graphics and image processing.

Examples of usual extensions include  *.CAL *.CALS *.RAS

This is a memory based dataset.


  • Cadcorp SIS Desktop
  • Cadcorp SIS Desktop Express
  • Cadcorp SIS ActiveX Modeller
  • Cadcorp SIS ActiveX Manager
  • Cadcorp SIS ActiveX Viewer
  • Cadcorp GeognoSIS