Tarsier: Raster data
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 as binary numbers.
A typical Tarsier header looks like:
Cols 25 Rows 25 XLLCorner 0 YLLCorner 0 CellWidth 1 CellHeight 1 NoDataValue -9999.000000 Projection latlon Precision float Format binary *
This raster is a 25 X 25 pixel lat/long grid with the lower left corner located at the intersection of the prime meridian and the equator. The resolution is 1 degree. Data points are stored as floating point numbers (can include signed decimals) and the value -9999 represents no data.
The size of the raster is limited by the memory of your machine, but most modern computers can easily handle raster up to 49,000,000 pixles (7,000 x 7,000).
Tarsino likes UTM grids, but other projections are also supported: -add table of projections-
Learn more about rasters and how to work with .tra files
Take the Tarsier tutorial for Raster data.