[Gnuplot-py-users] R: export output from gnuplot to python

[Lorenzo M. <lor...@ya...>]

Hi, I'm not an expert of scipy, but you might perform the fit using scipy, and then pass all to gnuplot.

http://www.scipy.org/Cookbook/FittingData

lorenzo

--- Sab 12/11/11, Krzysztof Berniak <krz...@gm...> ha scritto:

Da: Krzysztof Berniak <krz...@gm...>
Oggetto: [Gnuplot-py-users] export output from gnuplot to python
A: gnu...@li...
Data: Sabato 12 novembre 2011, 17:43

Hi all,
I'm writing script in python, which fitting exponencial curve to data ( f(x) = a*exp(x*b).To this problem, I use gnuplot in my script. Gnuplot display parameters ( a +/- delta a; b +/- delta b)
How Can I use/save this parameters in python variables in next steps of my script, 
def main():   ...            plot = Gnuplot.Gnuplot()
        plot('f1(x) = a1*exp(b1*x)')    plot('a1 = 300; b1 = 0.005;')    plot('fit f1(x) "data.txt" using 1:2 via a1, b1')        print "first parameter", a1
    print "second parameter", b1   # is it feasible ? Or there is another way to see the results ( parameter a1 and b1) of gnuplot by python  
    #plot('set terminal postscript')    #plot('set output "output.ps"')   
regards and please help,
Cristopher


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