How to add points to 2 differents series on the same graph?

[SomeUsername14786]

Hi,

I wish to make a line graph with 2 differents series:

lines(1:4, rand(4)
lines!(1:4, rand(4)

So far so good.

Now I want to add additional points to each series as a calculation progress similar to what we can see on this example of Agents.jl: https://juliadynamics.github.io/Agents.jl/stable/examples/agents_visualizations/.

I tried something like that to initialize the graph:

using GLMakie, Makie

y1 = Observable([60.0, 65.3, 45.5])
y2 = Observable([30.0, 25.7, 98.9])

x1 = lift(y1) do y1
    1:length(y1)
end

x2 = lift(y2) do y2
    1:length(y2)
end

lines(x1, y1)
lines!(x2, y2)
ylims!(0, 100)

And to update the graph:

newValue = 55.0
append!(y1[], newValue)

However neither the graph nor the x1 observable are updated when I update the y1 observable.

What am I doing wrong? What's the correct way to do it?

[asinghvi17]

That append only accesses the observable's value and doesn't do anything to it. You can notify(y1) afterwards to let the observable know it's been updated.

If you were assigning to the variable as y1[] = ..., then there would be no need to notify.

Also, have you seen the timeseries recipe?

[SomeUsername14786]

Thanks a lot! Using notify(y1) solved the problem. I also needed to manually call xlims! otherwise the graph doesn't expand by itself.

What are timeseries? Only documentation I found was this one: https://docs.makie.org/stable/api/#TimeSeries which is rather short.