朱莉娅与原子的生活情节

Question

what is the easiest way to plot values from example for loop to same plot window? I try Plots, but atom doesn't open any plot windows. When I try to do same in Julia terminal everything is fine. Example:

using Plots
plot(Plots.fakedata(50,5),w=3)

I have socket connection from other program and I want to plot line of the values what I get. Or is this possible to do with PyPlot?

Answer 1

You need to use gui() to display the plot window.

In the REPL, objects that are returned are displayed. That's why anything without a ; gets displayed (also matrices, vectors, etc.). When you go to a script, that's no longer true (which is why you don't need to use ; ). In Atom it's reading it in script mode, so you have to manually display things via display(obj) , or if using plots you can just use gui() .

To display things in the same plot window, you simply set reuse=true when setting the backend, ie

gr(reuse=true)

Note you can also add show=true to make it automatically show when plots are made instead of having to call gui() .

Then to do live plotting, just push the new values into the plot. The full code looks like this:

using Plots
gr(reuse=true)
p =plot([0;.1],[0;.2])
gui()
for i=2:10
  push!(p,i*.1,randn())
  gui()
  sleep(.1) # To slow things down for show.
end

This answer should work with any backend. Note I switched to GR.jl since it tends to be faster