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Does anyone know of a free graph plotting app for Windows (or an online tool) that can plot something like this?

Xn+1= r sin (π * Xn)

5 Answers 5

3

I'd like to suggest WolframAlpha, but it has trouble with the "r*". The best I could do is this.

enter image description here

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  • Definitely helps. I just tried this g[n+1]==(4*(sin(g[n]*Pi))) (wish I could get the graph could be a bit bigger though).
    – Nifle
    Oct 14, 2009 at 20:29
  • Click the Download as PDF at lover right, the graph there is LITTLE bit bigger
    – sYnfo
    Oct 14, 2009 at 20:31
  • 1
    And - I forgot - you can install Mathematica Player, click the Live Mathematica in lover left corner and resize the graph however you want. :)
    – sYnfo
    Oct 14, 2009 at 20:52
3

I'd try Gnuplot or Octave/Matlab. If you had an Apple, the built-in Grapher would do the job.

1
  • wow, spacetime is awesome
    – detj
    Nov 23, 2009 at 22:23
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See Science: Math: Software: Graphing for a few dozens of plotting applications.

0

Try Graph by Ivan Johansen.

Graph is an open source application used to draw mathematical graphs in a coordinate system. Anyone who wants to draw graphs of functions will find this program useful. The program makes it very easy to visualize a function and paste it into another program. It is also possible to do some mathematical calculations on the functions.

enter image description here

0

I would recommend matplotlib (requires some basic Python knowledge).

matplotlib is a python 2D plotting library which produces publication quality figures in a variety of hardcopy formats and interactive environments across platforms. matplotlib can be used in python scripts, the python and ipython shell (ala MATLAB® or Mathematica®), web application servers, and six graphical user interface toolkits.

The documentation is still under development, so mastering MPL can take some time, but it's obviously worth it in the end if you take a look at the examples here.

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