First release of curve-sampling

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Hi,

I'm happy to announce the first release of curve-sampling, a library that helps to draw graphs or images of functions with few evaluations of them. For example, one samples the function x ↦ x·sin(1/x) using solely 200 evaluations with

use curve_sampling::Sampling;
let s = Sampling::uniform(|x| x * (1. / x).sin(), 0., 4.).n(200).build();

The sampling can then be saved to a file (whose format is compatible with Gnuplot) with

s.write(&mut BufWriter::new(File::create("sin.dat")?))?;

Passing this file to Gnuplot yields
horror1

Here is another picture that shows the points selected by the library in order to have a graphic as accurate as possible given the constraint on the number of function evaluations.
horror2

There is also a LaTeX export that allows to add arrows to indicate the orientation of the curves. Here is a example to convey the dynamic of an ODE system.

dynamic
dynamic717×617 72.2 KB

Feedback is welcome.

Enjoy,
Christophe

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