Julian Kessel's Blog

I has been a rather long time searching for a decent plotter application for linux. Though as a gnome user I usually defer kde apps because of their deps, but this time I found no alternative available which provided all stuff kmplot features.

Besides all cool features which can be discovered by clicking around in the UI, kmplot learnt me to split a parameterized function like x³-2tx² in two functions which describe the x-axis and y-axis seperately and controlling the values of t with a slider.

First, you have to get used to the fact that we call out functions f_x and f_y now, and not f as usual actually meaning f_y. That's because you just require f_x (the function generating x-values) to be e.g. f_x(x) = x (linear slope @1).

The function f(x)= x³-2tx² splits up in f_x(x) = x and f_y(t,k)=t³-2kt² while k is the parameter controlled by the slider (check "slider" and choose one from the list).

While this makes sense for being able to modify f_x later It's also possible to choose a regular cartesian plot.