<![CDATA[Function from a list of points]]>
https://help.geogebra.org/topic/function-from-a-list-of-points
Fri, 08 Feb 2019 22:07:08 +0000Thu, 07 Feb 2019 21:50:35 +0000Zend_Feed<![CDATA[To my knowledge, this command does not exist. You can use the command: y(Intersect(PerpendicularLine((<Xvalue>, 0), xAxis), <polyline>)) I think (not tested) it's possible to create a custom-tool with the command above. . Check also the commands Fit... for example FitPoly( <List of Points>, <Degree of Polynomial> ) and also the command Spline( <List of Points>, <Order ≥ 3>, <Weight Function> ) (not for functions)]]>
https://help.geogebra.org/topic/function-from-a-list-of-points#comment-255102
Fri, 08 Feb 2019 11:36:59 +0000<![CDATA[https://help.geogebra.org/t...]]>
https://help.geogebra.org/topic/function-from-a-list-of-points#comment-255112
Fri, 08 Feb 2019 12:42:04 +0000<![CDATA[For equally-spaced points: Function({x(A), x(D), y(A), y(B), y(C), y(D)}) For general pointsl1=Sort({A, B, C, D})
DataFunction(x(l1), y(l1)) although DataFunction() isn't designed for dynamic update so you need a bit of script trickery :) https://www.geogebra.org/m/vdx5wcxh]]>
https://help.geogebra.org/topic/function-from-a-list-of-points#comment-255130
Fri, 08 Feb 2019 14:15:27 +0000<![CDATA[Ah yes. I knew I'd seen a command that does something like I wanted - datafunction was it. Thanks to you all for the suggestions though! I wonder if there's a scope for a function to do this automatically (and dynamically) - (i.e. sorts points, creates datafunction, and updates it if points move), since adding the script to every point is a little painful if we have lots of points...]]>
https://help.geogebra.org/topic/function-from-a-list-of-points#comment-255154
Fri, 08 Feb 2019 16:55:01 +0000<![CDATA[create a list of points and add the script only to list]]>
https://help.geogebra.org/topic/function-from-a-list-of-points#comment-255158
Fri, 08 Feb 2019 19:18:02 +0000<![CDATA[I have a solution with a function (ConvListetoFunc(<List of points>) which convert a freehand into a function. The function may vary when then freehand is Moving !]]>
https://help.geogebra.org/topic/function-from-a-list-of-points#comment-255162
Fri, 08 Feb 2019 19:33:21 +0000<![CDATA[I've created a file that turns a polyline into a dynamic function. The idea can be transferred from the points A, B, C, D to elements of a sorted point list.]]>
https://help.geogebra.org/topic/function-from-a-list-of-points#comment-255164
Fri, 08 Feb 2019 19:37:20 +0000<![CDATA[Thanks. Please consider a new point E with the same x value as one of the existing point (eg. C) : E=(x(C),p(x(C))) I think your intervals should include the boundary points on one side : eg. use >= instead of > like the changes in attached file.]]>
https://help.geogebra.org/topic/function-from-a-list-of-points#comment-255176
Sat, 09 Feb 2019 08:56:54 +0000