Discontinuous functions

[leonhma]

What's your feature?

Add the possibility to specify discontinuous/piecewise functions and plot them as requested by @yxsjune.

Any related problems?

Currently no way to specify discontinuous functions.

Additional context?

No response

[leonhma]

@yxsjune According to this in builtin-math-eval, you can specify expressions with a ternary operator, so you can do this to specify a piecewise function: x<0 ? x^2 : x+2

The function:

$$ \begin{array}{ll} x^2 & x\lt 0 \\ x+2 & x\geq 0 \end{array} $$

Its not that intuitive but also the only way I see too specify these piecewise functions on a single line of text.

The dots at the jump in the graph are not there yet. > #20

[leonhma]

Still needs the (automatic) addition of those circles to discontinuities/singularities.

This probably also needs a PR to functionplot or a plugin for it.

[ghost]

This does not work for me, Is there a certain format you are supposed to write it in? I copied exactly as it was but it does not work.

[leonhma]

@amaribayne

x<0 ? x^2 : x+2

This is the function body. You have to put f(x) = ... for the graph to show up. The discontinuities don't work yet.