[daip] dftpl

[Eric Greisen]

Andreas Brunthaler wrote:
>
> Just for clarification: DFTPL just takes bparm(2) seconds of a scan, 
> regardless of how much data is in this time period? So one could have 
> e.g. 2.9 seconds of no data and 0.1 seconds of data after an observing 
> gap? And when does the integration time start? Always at the last start 
> of a scan?

This is a constant issue in all averaging tasks.  In this case, DFTPL is 
attempting to make a regular grid in the time axis.  If you ask for 
10-sec averaging - the first bin is
     t1 + 0  ->  t1 + 10
second bin
     t1 + 10 ->  t1 + 20
etc.  Whatever data fall in a bin are plotted at the average of the 
times that limit that bin.  I could think of better algorithms that 
would make an irregular axis but that would involve a rewrite of the 
code which may or may not be justified.

Eric Greisen