Can I draw a unicodeplot repeatedly without annoying shift on terminal?

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1

While following an example of DiffEqFlux.jl, I wanna change the backend of Plots.jl to do this remotely (via ssh).

However, repeatedly generated unicodeplot makes the terminal very annoying like:

74.84191276952308
            ┌────────────────────────────────────────┐
    2.11133 │⠀⚬⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ data
            │⠀⡇⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ prediction
            │⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⚬⚬⚬⚬⠀⚬⚬⠀⠀│
            │⠀⡇⚬⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀│
            │⠀⡇⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⚬⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⠀⚬⚬⠀⚬⚬⠀⠀⠀⠀⠀⠀⠀⚬⚬⚬⠀⚬⚬⚬⠀⚬⚬⚬⠀⚬⚬⚬⚬⠀⚬⚬⚬⠀│
            │⠉⡏⠉⠉⠉⠉⠉⚬⠉⠉⠉⠉⚬⠉⚬⚬⚬⠉⚬⠉⠉⠉⠉⚬⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉│
            │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
   -1.82238 │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⚬⠀⚬⚬⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            └────────────────────────────────────────┘
            ⠀-0.045⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀1.545⠀
72.33803421302132
            ┌────────────────────────────────────────┐
    2.11133 │⠀⚬⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ data
            │⠀⡇⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│ prediction
            │⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⚬⚬⚬⚬⠀⚬⚬⠀⠀│
            │⠀⡇⚬⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀│
            │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⚬⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⚬⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⠀⚬⚬⠀⚬⠀⠀⠀⠀⠀⠀⠀⚬⚬⚬⚬⠀⚬⚬⚬⠀⚬⚬⚬⠀⚬⚬⚬⚬⠀⚬⚬⚬⠀│
            │⠉⡏⠉⠉⠉⠉⠉⚬⠉⠉⠉⚬⚬⠉⚬⚬⚬⠉⠉⠉⠉⠉⠉⚬⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉│
            │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
   -1.82238 │⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⚬⚬⠀⚬⚬⚬⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀│
            └────────────────────────────────────────┘
            ⠀-0.045⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀1.545⠀

...

Is there any way to “reset” and “update” the existing unicodeplot?

2

Should be possible (ANSI to roll back height+2*isinteractive() lines before plotting) but I don’t think it’s implemented. You could make a feature request at the UnicodePlots.jl GitHub page.

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3

Check a solution here to clear the REPL terminal:

write(stdin.buffer, 0x0C)

NB: subsequent plots do stay in place:

Unicode_plots
Unicode_plots918×643 82.1 KB

4

For clearing up the whole terminal screen, on unix:

run(`clear`);

Otherwise @rafael.guerra 's solution is pretty decent.

6

That’s why I added on unix.

1 Like
7

Just for fun:

julia> macro repeated(ex); :(run(`clear`); $(esc(ex))); end
julia> @repeated lineplot(sin)
julia> @repeated lineplot(cos)
...
1 Like
8

Also @pfitzseb 's solution works quite well, if your terminal supports escape codes:

for i in 1:10
      print("\e[0;0H\e[2J")
      display(plot(sin, 0, i))
      sleep(0.5)
end

meaning if you put the first two lines of the loop body in a callback, it should work as expected.

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