Re: [Gnuplot-info] fit n first data only & errors bars questions

[Thomas S. <t.s...@fz...>]

dantian wrote:
> 
> Dear gnuplot users,
> 
> I'm plotting a data set of like 20 points but I want to fit the  10 first
> points.
> Is there a way to do that?
> 

yes, when calling the 'fit' command you may limit the xrange, see
http://www.gnuplot.info/docs/node82.html


dantian wrote:
> 
> Then, I'd prefer to plot error bar only on one point, it it possible to do
> that with gnuplot?
> 

yes, make an additional plot for this one point only using the 'every'
keyword, see
http://www.gnuplot.info/docs/node121.html

(e.g.
plot fitted_function(x), "datafile" using 1:2, "" using 1:2:3 every
::3:0:3:0 with errorbars)
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