Keywords: sic-gdfv2

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# GDF Images

The Gildas Data Format can handle different type of data. In GDFV1, these were Images (i.e., hypercubes), Tables and UV Tables, but the distinction between Images and Tables was limited, as any Image could be opened as a Table. In GDFV2, we have improved this distinction by allowing different kinds of Tables (simple tables, UV Tables, CLASS Tables, VO-like Tables), which are identified through a specific code in the data header. While provision for CLASS and VO-like Tables is taken, no application code is yet available.

Subsections

- Type description
  - Header description
  - Data description
- Improvements between GDFV1 and GDFV2
  - Dimensions
  - Transposition of data hypercubes
  - New header parameters or facilities
- Backward compatibility