Incorrect plot for small values

General Usage
1

I’m a bit puzzled by what’s happening here, is this a known issue?

(@v1.8) pkg> st -m Plots
Status `~/.julia/environments/v1.8/Manifest.toml`
  [91a5bcdd] Plots v1.33.0

julia> using Plots

julia> r = range(-1, 1, length=10);

julia> plot(r, r*1e-20)

This produces
plot

Why is the plot seemingly zero?
This doesn’t happen if I use PyPlot, in which case I obtain a line as expected

2

Evidently, it’s a poorly chosen default ylim. The following makes this look as expected

julia> plot(r, r*1e-20, ylim=extrema(r*1e-20))
2 Likes
3

A tip, if you will, for better formatting of y-axis labels. To your solution add the keyword argument:
yformatter=x->round(x,sigdigits=2)

2 Likes
4

I wonder if the default settings could be improved