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| From | Karl Ratzsch <mail.kfr@gmx.net> |
| Newsgroups | comp.graphics.apps.gnuplot |
| Subject | Re: Intersection point of data-plot and linear-function |
| Date | Tue, 27 Dec 2016 11:02:30 +0100 |
| Organization | solani.org |
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Am 27.12.2016 um 00:13 schrieb Markus Grünwald: > Just to be sure (because i need the same thing - and maybe there were lot of improvements till this last post): > There is no way in gnuplot to get the intersection point of a data-set (or a smoothed spline of it) with a linear function (y=k*x+d)? > No. At least no simple, straightforward way. Remember gnuplot is a plotting tool, not a data evaluation suite. If you can model your data by some analytical function(s) that you can fit, then you could derive the intersection, and use "set label point" to mark it. If a simple linear regression (or rather two) fit you data, then it's simple, and for that, you "just" have to limit the range sufficiently. The trick will be to do that automatically and reliably in gnuplot. Using densely sampled splines instead of the actual data will probably help. Karl
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Intersection point of data-plot and linear-function Markus Grünwald <m_grueni@web.de> - 2016-12-26 15:13 -0800
Re: Intersection point of data-plot and linear-function Karl Ratzsch <mail.kfr@gmx.net> - 2016-12-27 11:02 +0100
Re: Intersection point of data-plot and linear-function Markus Grünwald <m_grueni@web.de> - 2016-12-28 15:43 -0800
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