I’m working my way through basic Julia exercises in a course. I have no problem with most of it but I haven’t yet grasped the odd way plots seem to work. Here’s a basic fn for calculating the steady state values of a logistic map:

```
function steady_state_values(r)
b = 0.25
for i in 1:400
b = r * b * (1-b)
end
attractor_values = zeros(150)
for i in 1:150
b = r * b * (1-b)
attractor_values[i] = b
end
return attractor_values
end
```

I want to vary the parameter r (along the x axis) and plot the corresponding steady state values along y. I’ve tried variations of this:

```
using Plots
first = true
for r = 2.9 : 0.001 : 4
y = steady_state_values(r)
x = fill(r, length(y))
if first
plot(x=x, y=y)
first = false
else
plot!(x=x, y=y)
end
end
```

Multiple calls to plot don’t seem to work–they result in no output-- so I plot the first array then call plot! subsequently. Even this doesn’t work. Can someone explain the logic? I come from matplotlib where you call figure() to begin, then any number of plotting operations, then show().

Plots.jl doesn’t seem to work that way. I’ve gone through a Plots.jl notebook but it didn’t clarify.

Thanks,

-Tom