Christopher Barker wrote:
[...]
> It is nice to have a really simple plot command. What would it do if we
> were trying to be fully OO? My key question is whether it would return
> and axis, a figure or both:
>
> Fig, ax = plot([1,2,3])
>
> then:
>
> ax.xlabel("whatever")
>
> isn't bad for me.
Sometimes plot creates a figure, sometimes it creates an axes, sometimes
neither, but it always creates one or more Line2D objects, so that is
what it returns--a list of lines. As far as I can see, it *has* to
return this, or something containing this, so that one can work later
with these most fundamental objects that it makes. An alternative would
be some sort of LineSet object like the ContourSet object returned by
contour, with lots of extra information, but I don't know that there
would be any advantage.
Anyway, the point is that your alternatives for plot to return would not
work well in practice, but what it does return now works fine, both for
plot() and for ax.plot().
Eric
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