rebinlc

       rebin a time series to a new, evenly spaced, time binning

       time series analysis

       rebinlc,time,count,tn,rn

       time : The times of the original light curve. Must be sorted.
       rate : The count RATES of the original light curve,
              rate(i) corresponding to time(i)

     nonequally spaced timing:
       usetime: array with times onto which to bin the lightcurve,
               the last element contains the end of the last bin
     equally spaced timing:
       dt    : the temporal resolution of the rebinned lightcurve
               (default is a resolution of 100th of the length of the
               original lightcurve)
       tstart: start time of the rebinned lightcurve, default is the
               first value of the time array.
     others:
       raterr: uncertainty of the input light-curve
       minnum: min. number of data points in each time bin. When
               this number is smaller than minnum, the bin is left
               empty.

       chatty: if set, print out lots of annoying messages
       gaps  : if set, give the time series with zero counts in
               the bins without events.
       devn  : if set, compute the uncertainty of the rebinned
               lightcurve (ern parameter) as the standard deviation
               of the points entering that bin of the lightcurve,
               rather than using error propagation

       tn,rn: The rebinned light-curve. This light curve can contain
              gaps, which are defined to be all time intervals in the
              original lightcurve longer than dt, which don't contain
              any data.

       ern       : Uncertainty of the output-lc, either computed from
                   error propagation of raterr (default), or computed
                   as the standard deviation of the points entering
                   the bin (if devn-keyword is set; raterr is not used)
       numperbin : number of points used in each bin

       none

       none

       Version 1.0, 1998/06/30 KP / JW (IAA Tuebingen)
       Version 1.1, 1998/07/07 JW / SB (IAA Tuebingen)
         * added minnum parameter
         * added nn keyword parameter
       Version 1.2, 1999/02/09 SB
         * added gaps keyword parameter
       Version 1.3, 1999/05/26 KP
         * added tstart keyword parameter
       Version 1.4, 1999/10/27 JW
         * bug fix in last line from MN
       Version 1.5, 1999/11/09 JW
         * exit with an error message if the lightcurve is too short.
       Version 1.6, 1999/11/25 SB
         * added numperbin optional output
       Version 1.7, 1999/11/26 SB
          * nn optional output eliminate (nn = numperbin)
   CVS Version 1.6, 2001/03/23, JW
          * added usetime keyword
   CVS Version 1.7, Apr 20 2001, Sara Benlloch
          * long set
   CVS Version 1.8, 2002/01/17, Thomas Gleissner (IAA Tuebingen)
          * added devn keyword
   CVS Version 1.9, 2002/01/18, TG
          * solve STDDEV(rate[index]) if n_elements(rate[index]) EQ 1
   CVS Version 1.10, 2002/01/22, TG/JW
          * return standard deviation in ern keyword if devn is set
            rather than returning the standard deviation in the devn
            keyword
   CVS Version 1.11, 2002/01/22, TG
          * eliminate 'Type of end does not match'-error: set ENDIF
            instead of ENDELSE in line 161
   CVS Version 1.12, 2002/10/31, TG
          * correct allocation of numperbin
          * use vector notation for time bin limits to make sure that
            the upper limit of time bin [i] is equal to the lower limit
            of time bin [i+1]
   CVS Version 1.13, 2002/10/31, TG
          * just some unrelevant cosmetic change
   CVS Version 1.14, 2002/12/11, TG
          * if usetime keyword is used, do not create time bin limits
            tlimit

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