Tarsier: Standard data classes

The standard data classes in Tarsier include:

• Raster data (tra)
• Sites data (tsd)
• Vector data (tvc)
• Table data (ttd)
• Network data (tne)
• Agency data (tgt)
• Time series data (tts)
• Variables data (tvd)
• ThreeD data (t3d)

(Not used any more: Polygon data?)