[Gnuplot-info] Any suggestion for better fit function?

[smms <sm...@ho...>]

I know it is rather a "do-it-for-me" post but thought someone could help me
with a better fit suggestion. 

Here is my data set I managed to fit (not quite exciting) with following
scripts and function. Just looking for if someone could suggest a better
function. Many thanks for any feedback.

reset
set key bottom right
f(x) = a*atan(x/b); a = 2.65; b = 2.5 
fit f(x) 'test.dat' u 4:25 via a,b
plot 'test.dat' u 4:25 w p not '0.99-3%-1200', f(x) t 'f(x)'


test.dat data set is here,

2.561	2.642
0.686	2.685
0.586	2.647
0.487	2.658
0.402	2.620
0.284	2.516
0.213	2.440
0.197	2.359

Here is my fitted plot,

<http://gnuplot.10905.n7.nabble.com/file/n17899/test.bmp> 




--
View this message in context: http://gnuplot.10905.n7.nabble.com/Any-suggestion-for-better-fit-function-tp17899.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.