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Groups > comp.graphics.apps.gnuplot > #1250

Re: Fitting data to several columns in 1 file

From Hans-Bernhard Bröker <HBBroeker@t-online.de>
Newsgroups comp.graphics.apps.gnuplot
Subject Re: Fitting data to several columns in 1 file
Date 2012-07-06 19:26 +0200
Message-ID <a5old7F4o3U1@mid.dfncis.de> (permalink)
References <86b83d19-e0e0-4e5c-8e2c-126498e427ad@d6g2000vbe.googlegroups.com>

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On 05.07.2012 00:35, Phillip Mahoney wrote:
> t   x   y
> 0  2   3
> 1  3   4
> etc. I want to fit the data here to a single f(x)=a+bx whereby it
> takes both columns into account.

Hmm... "both"?  But you have three!

> So when you plot the data, you have t vs (x and y values)

Do I, now?  How?  Why shouldn't I just ignore 't' completely:

	plot 'data' using 2:3

?

> and I want to fit the function so it takes into
> account both x and y columns of data with respect to t. Does that make
> sense?

Frankly, no.  Your function doesn't take into account 't' at all ... so 
why should your fit?  How even could it?

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Thread

Fitting data to several columns in 1 file Phillip Mahoney <pha07psm@gmail.com> - 2012-07-04 15:35 -0700
  Re: Fitting data to several columns in 1 file Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2012-07-06 19:26 +0200

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