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Re: Best fit point in contour plots using Gnuplot

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Subject	Re: Best fit point in contour plots using Gnuplot
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On Tuesday, November 20, 2018 at 5:36:54 PM UTC+5:30, Karl Ratzsch wrote:
> Am 20.11.2018 um 11:34 schrieb srishtinagu19@gmail.com:
> > ..... I just tried it set view map... it worked... Thank you.
> > 
> > Also I want to know does gnuplot automatically calculates the 1,2,3.. sigma ranges ?
> > I have three columns.. x,y,z. For contour plot I am using the above commands with -
> >  "$set cntrparam levels discrete 2.3,6.2,11.8"
> >  which are 1,2 and 3 sigma levels respectively for 2 parameter correlation.
> 
> If you say so ...
> 
> > But in my z column these sigma values are not present still I am getting a plot.. I am confused that what does it mean ? 
> 
> gnuplot simply makes a surface with height z out of your xy-gridded
> datapoints, and then interpolates contour lines onto that at the
> specified levels. Neither gnuplot nor I know what "sigma" is.
> 
> > What I know is- for particular z values of confidence levels contours are drawn for x and y for corresponding z values set by the user.. Am I correct ?
> > 
> 
> Confidence levels of what? I repeat, I am NOT clairvoyant. I cannot read
> your mind. Contours are made by a straightforward interpolation, there
> is no stochastic element.



>set contour
>set view map
>unset surface
>set cntrparam levels discrete 2.3,6.2,11.8
>splot [0:360][0:0.9] "test1.dat" with lines


These are the commands that I am using.
I simply want to know how to plot contours at various confidence levels.
By Sigma, I mean - confidence level of a data like 1 sigma means result which is accurate within 68% of its true value 2.3 and so on...

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Thread

Best fit point in contour plots using Gnuplot srishtinagu19@gmail.com - 2018-11-19 00:20 -0800
  Re: Best fit point in contour plots using Gnuplot Karl Ratzsch <mail.kfr@gmx.net> - 2018-11-19 14:51 +0100
    Re: Best fit point in contour plots using Gnuplot srishtinagu19@gmail.com - 2018-11-19 06:28 -0800
    Re: Best fit point in contour plots using Gnuplot srishtinagu19@gmail.com - 2018-11-19 06:29 -0800
      Re: Best fit point in contour plots using Gnuplot Karl Ratzsch <mail.kfr@gmx.net> - 2018-11-19 16:27 +0100
      Re: Best fit point in contour plots using Gnuplot srishtinagu19@gmail.com - 2018-11-19 07:29 -0800
        Re: Best fit point in contour plots using Gnuplot srishtinagu19@gmail.com - 2018-11-20 01:00 -0800
          Re: Best fit point in contour plots using Gnuplot Karl Ratzsch <mail.kfr@gmx.net> - 2018-11-20 11:20 +0100
            Re: Best fit point in contour plots using Gnuplot srishtinagu19@gmail.com - 2018-11-20 02:34 -0800
              Re: Best fit point in contour plots using Gnuplot Karl Ratzsch <mail.kfr@gmx.net> - 2018-11-20 13:06 +0100
                Re: Best fit point in contour plots using Gnuplot srishtinagu19@gmail.com - 2018-11-20 22:52 -0800
                Re: Best fit point in contour plots using Gnuplot srishtinagu19@gmail.com - 2018-11-20 22:52 -0800
                Re: Best fit point in contour plots using Gnuplot srishtinagu19@gmail.com - 2018-11-20 23:10 -0800

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