Plotting figures and updating in loop

General Usage
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2

First, the way to update plots is to use plot! with the main plot passed in as its first argument so rewriting your code would look like this:

p1 = plot(title = "Plot 1")
p2 = plot(title = "Plot 2")

function sx(E)
    a(x) = x^2 + E 
    b(x) = x + E 
    plot!(p1, a)
    plot!(p2, b)
end

The default gr() backend doesn’t support multiple windows that I know of but the pyplot backend does by setting reuse=false in p1 and p2 so the full code would look like this:

using Plots 
pyplot() # Switch to the pyplot backend. Needs to be installed first. 

p1 = plot(title = "Plot 1", reuse = false)
p2 = plot(title = "Plot 2", reuse = false)

function sx(E)
    a(x) = x^2 + E 
    b(x) = x + E 
    plot!(p1, a)
    plot!(p2, b)

end

E = [12
     24]


sx.(E) # More Julia way of doing your for loop

p1
p2
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