plot() silently switches to a different scale when numbers are too big

[erentar2002]

My problem can be explained with the following two plots:

plot(factorial(x),x,0,9)

and

plot(factorial(x),x,0,10)

When plotting up to 9, the plot gives me exactly what i expect, a linear-linear plot.
When plotting up to 10 though, sage silently chose to make the y-axis log10. This should not be the standard behavior as it leads to confusion.

[Eric Gourgoulhon]

The plot is still linear-linear, but the y axis is labelled by y/1e6 instead of y.

This is clearly a bug. Thanks for reporting it. 

A ticket has already been opened for this issue:

https://trac.sagemath.org/ticket/34233

Eric.