[Ifeffit] error message for Set: equation
dmc at pdx.edu
dmc at pdx.edu
Tue Aug 17 14:31:17 CDT 2004
It just gives me the old box with : "there are errors in your math expression.
Do you wish to abort or carry on..."
I clicked on "abort," then defined the parameter and it worked fine.
Quoting Bruce Ravel <ravel at phys.washington.edu>:
> On Tuesday 17 August 2004 03:02 pm, dmc at pdx.edu wrote:
> > Also, don't forget you have to "define" when using equations, I got
> > an error message when I used "set."
> Which error message did you get? Since last week's business about
> setting the feff executable correctly, I have started examining
> artemis's error/warning/informational messages and changing some that
> seemed vague to me.
> I also wanted to point out the difference between set and def in
> Ifeffit, which may help to explain whatever the message was.
> In Ifeffit, a set parameter is evaluated once when the command is
> issued to Ifeffit. A def parameter is parsed and it's math expression
> is stored. As the fit progresses, the math expression is re-evaluated
> to be kept up to date with the current values of the guess
> parameters. A set, on the other hand, does not change during the
> course of the fit.
> Bruce Ravel ----------------------------------- ravel at phys.washington.edu
> Code 6134, Building 3, Room 405
> Naval Research Laboratory phone: (1) 202 767 2268
> Washington DC 20375, USA fax: (1) 202 767 4642
> NRL Synchrotron Radiation Consortium (NRL-SRC)
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> My homepage: http://feff.phys.washington.edu/~ravel
> EXAFS software: http://feff.phys.washington.edu/~ravel/software/exafs/
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