[Ifeffit] problems with deglitching in Athena

Bruce Ravel ravel at phys.washington.edu
Thu Oct 9 08:23:32 CDT 2003

On Thursday 09 October 2003 12:17 am, Carlo U. Segre wrote:
> I have been using the single point deglitching in Athena and I find some
> strange behavior.  It seems that the only thing that counts is the
> horizontal cross hair.  This needs to be right at the vertical position of
> the point to be selected.  The vertical cross hair does not seem to
> matter.  This is sort of counterintuitive and it took me a while to figure
> out that the program was not just selecting random points on me.  Perhaps,
> if this is a feature of PGPLOT, it should be docmented.

Hi Carlo,

That behavior is not my intention for the single point deglitching.  I 
actually try hard to select the closest point to the center of the crosshair 
in that situation.  I'll look into it.

I should mention that there are some situations in Athena where it only 
considers the position of the *vertical* crosshair.  For example, if you 
pluck a value for, say, kmin from a chi(k) plot after clicking one of those 
little blue-X buttons, Athena uses the x-coordinate chosen from the plot 
rather than the x-coordinate of the point closest to the center of the 
crosshair.  That seems sensible to me in that case.

But I do agree that for deglitching, choosing the position of the horizontal 
cross hair would be screwy.  I'll let you know what I find.

Thanks for the bug report,

 Bruce Ravel  ----------------------------------- ravel at phys.washington.edu
 Code 6134, Building 3, Room 222
 Naval Research Laboratory                          phone: (1) 202 767 5947
 Washington DC 20375, USA                             fax: (1) 202 767 1697

 NRL Synchrotron Radiation Consortium (NRL-SRC)
 Beamlines X11a, X11b, X23b
 National Synchrotron Light Source
 Brookhaven National Laboratory, Upton, NY 11973

 My homepage:    http://feff.phys.washington.edu/~ravel 
 EXAFS software: http://feff.phys.washington.edu/~ravel/software/exafs/

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