- NAME
FXBISOPEN()
- PURPOSE
Returns true if UNIT points to an open FITS binary table.
- Explanation This procedure checks to see if the logical unit number given
by the variable UNIT corresponds to a FITS binary table opened
for read with the command FXBOPEN, and which has not yet been
closed with FXBCLOSE.
- Use Result = FXBISOPEN(UNIT)
If FXBISOPEN(UNIT) THEN ...
- Inputs UNIT = Logical unit number returned by FXBOPEN routine.
Must be a scalar integer.
- Opt. Inputs None.
- Outputs The result of the function is either True (1) or False (0),
depending on whether UNIT points to an open binary table or
not.
- Opt. Outputs None.
- Keywords None.
- Calls FXBFINDLUN
- Common Uses common block FXBINTABLE--see "fxbintable.pro" for more
information.
- Restrictions None.
- Side effects If UNIT is an undefined variable, then False (0) is returned.
If UNIT points to a FITS binary table file that is opened for
write, then False (0) is returned.
- Category Data Handling, I/O, FITS, Generic.
- Prev. Hist. None.
- Written William Thompson, GSFC, 1 July 1993.
- Modified Version 1, William Thompson, GSFC, 1 July 1993.
- Version Version 1, 1 July 1993.
Converted to IDL V5.0 W. Landsman September 1997