Tarsier: Raster data
From CCoWS Wiki
As the name implies, a Tarsier Raster Data file (.tra) is Tarsier's gridded data format. It is made up of two parts: 1) an ASCII header file that specifies the structure of the grid and data properties, and 2) a series of data values stored in binary.
A typical Tarsier header looks like:
Cols 25
Rows 25 XLLCorner 0 YLLCorner 0 CellWidth 1 CellHeight 1 NoDataValue -9999.000000 Projection 0 Precision float Format binary
What is a raster
A raster is
Learn more about rasters and how to work with .tra files
Take the Tarsier tutorial for Raster data.