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ColumnType(column) - The data type of each value in a column

Description:
This attribute holds a integer value indicating the data type of a named column in a Table. This is the data type which was used when the column was added to the Table using astAddColumn. The required column name should be placed inside the parentheses in the attribute name.

The attribute value will be one of AST__INTTYPE (for integer), AST__SINTTYPE (for short int), AST__BYTETYPE (for unsigned bytes - i.e. unsigned chars), AST__DOUBLETYPE (for double precision floating point), AST__FLOATTYPE (for single precision floating point), AST__STRINGTYPE (for character string), AST__OBJECTTYPE (for AST Object pointer), AST__POINTERTYPE (for arbitrary C pointer) or AST__UNDEFTYPE (for undefined values created by astMapPutU).

Type:
Integer, read-only.
Class Applicability:
Table
All Tables have this attribute.


next up previous 264
Next: Comment - Include textual comments in output?
Up: AST Attribute Descriptions
Previous: ColumnNdim(column) - The number of axes spanned by each value in a column

AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2009 Science \& Technology Facilities Council