I would like to produce a single plot of a function defined over discrete points in [-1,1] as I increase the number of points while shrinking the distance.

f[x_,en_]:= -x^2;
data = Table[f[x,en],{en,10,50,10},{x,-1,1,2/en}]

enter image description here

This is almost what I want, I get all the different run of f plotted with nice color, but the x-axis runs from 0 to 50 instead of going from -1 and 1.

I can obtain something closer to what I want if I do

data = Table[DiscretePlot[f[x,en],{x,-1,1,2/en}],{en,10,50,10}];
Show[data, PlotRange -> All]

but in this case all plots have the same color and are hard to distinguish

enter image description here

  • $\begingroup$ data = Table[{x,f[x,en]},{en,10,50,10},{x,-1,1,2/en}]; ListPlot[data]? $\endgroup$
    – N.J.Evans
    Apr 18, 2017 at 12:36
  • $\begingroup$ Almost, but not quite. I am now getting the color of the plot based on the x-coordinate (instead of it being based on en). $\endgroup$
    – Three Diag
    Apr 18, 2017 at 12:40
  • $\begingroup$ Ah no ok, got it! $\endgroup$
    – Three Diag
    Apr 18, 2017 at 12:42
  • $\begingroup$ Just add a DataRange -> {-1, 1} option to your ListPlot command $\endgroup$ Apr 18, 2017 at 12:50


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.