This certainly is an active thread!
I have used Kaleidagraph for years. It produces nice looking plots and
offers good control over the appearance of plots. I like the
curve-fitting; it's fast and powerful. Additionally, I have found it to be
extremely stable. I never worry about KG crashing even with lots of data
and graph windows open. I don't like KG's macro/programming language; it's
absolutely painful to use for any serious data analysis. I use Mathematica
for that and export text data files into KG.
I'm too scared of Igor's learning curve. However, the people I know who
use Igor _really_ like it, and it seems to have extremely powerful fitting
and data manipulation capabilities.
A previous poster mentioned proFit, which I'd never heard of. I checked
out the web page ( http://www.cherwell.com/cherwell/ProdHome/proFit.html
), and it looks very interesting!
- Robert
--
Robert Hohlfelder
rjh at leland.stanford.eduhttp://www-leland.stanford.edu/~rjh/
(415) 723-1284