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Groups > comp.graphics.apps.gnuplot > #1269
| From | alexis.paz@gmail.com |
|---|---|
| Newsgroups | comp.graphics.apps.gnuplot |
| Subject | Re: Correlation coefficient |
| Date | 2012-07-14 08:37 -0700 |
| Organization | http://groups.google.com |
| Message-ID | <9012ddb5-61bd-43cd-a54b-364afbbbf9d8@googlegroups.com> (permalink) |
| References | (1 earlier) <95hkj6Fi8eU1@mid.dfncis.de> <5f9b9ef2-4e51-4c6d-8951-83feb1b5e774@c20g2000vbv.googlegroups.com> <95mjm9F19cU1@mid.dfncis.de> <0fb8d538-97d6-455c-9f86-f8ecaf7a4583@b1g2000yql.googlegroups.com> <95q4sdF9m0U1@mid.dfncis.de> |
El martes, 14 de junio de 2011 19:16:20 UTC-3, Hans-Bernhard Bröker escribió: > On 14.06.2011 16:11, David Marçal wrote: > > > So, Gnuplot doesn't give me the r_xy coefficient! I made a FORTRAN > > program to calculate this r_xy for me, but I have to run the program > > for > > every fit linear I plot! I don't want to do this! Is there anyway to > > get this > > r_xy from Gnuplot or I have to run the FORTRAN program everytime? > > The real issue is whether that r_xy is all that useful as you seem to > think it is. Maybe you'ld be be better just not computing it at all? I think the problem is how compare the "goodness of fit" between two curves. The chisqure from the gnuplot depends on the magnitude on the axis. So if I compare two lineal fit with different magnitudes the chisqure will be different, also if the two fits look nice. Pearson coefficient could help us, but ¿how we can use the chisqure to do the comparision?. Im not know anything about statistic, so may be nice get a "recipe-like" solution. I beg your perdon for add a question and not an answer.
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Re: Correlation coefficient alexis.paz@gmail.com - 2012-07-14 08:37 -0700 Re: Correlation coefficient Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2012-07-14 18:29 +0200
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