| IDL widget curve fitting program [message #32384] |
Fri, 04 October 2002 11:15 |
robert.dimeo
Messages: 42
Registered: November 2001
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Hi,
I have recently completed writing a GUI wrapper for Craig Markwardt's
great MPFIT routines and I am making it available to anyone who might
be interested. It was written using objects in IDL 5.4 but it has not
been tested on any of the previous versions back to 5.0. The program
is called PAN (for Peak ANalysis) and I wrote it primarily for use by
the neutron scattering community. However you can read in your ascii
data (single or multiple groups) and fit functions (multiple) from the
existing library (Gaussians, Lorentzians, lognormal, damped harmonic
oscillator, sloping background) or type in your own fit function. I
tried to write it to minimize the amount of information you have to
type in by hand. For instance you use the mouse to specify initial
fit parameters. As an example, a Gaussian's amplitude and center are
specified with one mouse click and the width is specified with a
second mouse click.
It goes without saying that this program would not have been possible
without Craig's very flexible and simple-to-use MPFIT routines. Also
I have used David Fanning's beautiful and simple-to-use FSC_PSCONFIG
routines for the postscript output.
If you are interested in this program you can download it from my IDL
programs web site http://www.ncnr.nist.gov/staff/dimeo/idl_routines.html.
You can find it under the Object widget programs tag. Alternatively
you can get it from ftp://ftp.ncnr.nist.gov/pub/staff/dimeo/pan.zip.
There is an option to load a test data set so you can play around with
the features before getting your own data read in. See the
documentation for more details.
The program is zipped and, with the PDF documentation, it is about 950
kB. If you just want to see some documentation then you can also just
download the the PDF file,
ftp://ftp.ncnr.nist.gov/pub/staff/dimeo/pandoc.pdf.
Please let me know if you find this program useful.
Thanks,
Rob Dimeo
robert.dimeo@zzzznist.gov
To contact me take the zzzz out of the e-mail address above.
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