NUMLINES()

     Return the number of lines in a file
     This procedures became mostly obsolete in V5.6 with the introduction of
     the FILE_LINES() procedure

     nl = NUMLINES( filename )

     filename = name of file, scalar string

     nl = number of lines in the file, scalar longword
          Set to -1 if the number of lines could not be determined

     If Unix then spawn to wc; otherwise read 1 line at a time and count
     Call FILE_LINES() if V5.6 or later

     EXPAND_TILDE(), SPEC_DIR()

     W. Landsman                              February 1996
     Use /bin/sh shell with wc under Unix     March 1997
     Use EXPAND_TILDE() under Unix         September 1997
     Converted to IDL V5.0   W. Landsman   September 1997
     Call intrinsic FILE_LINES() if V5.6 or later   December 2002
     Always return a scalar even if 1 element array is input  March 2004

[Home Page] [Software, Documentation] [IDL Documentation] [Quick Reference] [Feedback]