[Kst] How do I subset data?

[John S. Walker]

G'day,

I'm new to kst so this may be a naive question,

I'm  trying to use kst to browse and analyse my data. The data consists 
of traces of muscle force responses to chemical and mechanical 
interventions an is about 100 000 data points in length. In several 
portions of the record, there is a state transition with an an 
exponential rise/decay to the new state. I'd like to be able to isolate 
that portion of the record (say by drawing a box around it) and 
applying a curve fit to the selected protion of the record; this may 
involve re-zeroing the x-axis (substracting the first x-value from all 
x-values in the subset) or alternatively inserting an offset into the 
equation (i.e. y=a + b*exp(c*(x-d)) where d is the offset). Can this 
sort of analysis be performed with kst?  I had a quick try at 
subsetting data but couldn't figure it out and the fits seem to be 
global. Any hints?



John S. Walker, PhD
Department of Physiology & Biophysics
University of Illinois at Chicago
835 Sth Wolcott Ave MC 901
Chicago IL 60612
USA

email: jsw9c at uic.edu
phone: 1 312 355 0150
fax: 1 312 355 0261

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