
Re: Getting the plotted data from a graph
Posted:
Jun 17, 2013 6:18 AM


> Dear All, > > My question is regarding the plotted data points in a > graph. Assume you draw a graph of sinx as: > > g1 = Plot[Sin[x], {x, Pi, Pi}, > Frame > True, FrameLabel > {"x", "y"}, > "y"}, ImageSize > 2.6*72 > ] > > then how can I get all of the data points of this > graph by using mathematica? > > This is really important for me and I couldn't find > the answer anywhere online! > > Thank you for your help in advance! > > Best, > Lily >
If you do
FullForm[g1]
you will see that the data are nested inside Line[...] in the form of xy pairs. Here is one way to get them out:
g1 = Plot[Sin[x], {x, Pi, Pi}, Frame > True, FrameLabel > {"x", "y"}, ImageSize > 2.6*72] data = Flatten[List @@ g1[[1, 1, 3, 2]], 1]; ListPlot[data]
Themis

