How do graph a piecewise function?
The same way you plot any function:
using Plots plot(1:50, sin) f(x) = x<25 ? sin(x) : 0.5 plot(1:50, f)
The function f is defined piecewise:
great! where do I find this in the documentation? I want to do other things, like make x = 1/2 and otherwise x=2
@brett_knoss here is how I approach this problem:
Q: How do I graph a piecewise function?
Q1: how do I graph any function
f in Julia?
Google “Julia Plots”. Find this: http://docs.juliaplots.org/latest/basics/
To plot any function
f(x) over domain
Q2: how do I create a piecewise function
f in Julia?
function f(x) if x > 0 && x < 2 1 elseif x >= 2 && x < 5 2 else 7 end end
thanks! that is handy. I found out in the mahematic opreators docs, that there is an unequal symbol !=
so I was able to put
f(x)=x!=0 ? .5 : 2 g(x)=x!=0 2 : .5 h(x)= f(x) *g(x) plot(1:50,f) plot!(1:50,g)
and all worked, except I can’t see my plots for some reason, also I don’t know how to select colors, but that shouldn’t matter.
Works for me:
using Plots f(x)=x!=0 ? .5 : 2 g(x)=x!=0 ? 2 : .5 h(x)= f(x)*g(x) plot(1:50,f) plot!(1:50,g) plot!(1:50,h)
To answer your other question - you can set the
linecolor attribute like so:
plot(1:50, f, linecolor = "mediumvioletred")