matplotlib-users

[Matplotlib-users] Questions on a couple of what I suspect are standard matplotlib idioms

[Kenneth M. <kmm...@wi...>]

Couldn't see the answers to these questions when looking through the
class reference docs, but they seem like common tasks, so I suspect
there are standard idiomatic way of doing these. Could anyone refer
me to examples showing

1) How to most easily label the x axis for data which is plotted
by date? (More specifically; does matplotlib have any understanding
of date values, and if so, how do I access and use it?) I'm hoping
there's an easier way than explicitly labelling ticks on the x axis.

2) I'll be drawing logy graphs, and I want a certain slope to indicate
a certain rate of growth, which means that, when using matplotlib
via TkAgg, I want it to keep the ratio of the graph display height
and display width constant as it resizes the graph to take into
account changes in the size of the enclosing window. Is there
a standard way to do this?

Thanks,
Ken McDonald

Re: [Matplotlib-users] Questions on a couple of what I suspect are standard matplotlib idioms

[John H. <jdh...@ac...>]

>>>>> "Kenneth" == Kenneth McDonald <kmm...@wi...> writes:

    Kenneth> Couldn't see the answers to these questions when looking
    Kenneth> through the class reference docs, but they seem like
    Kenneth> common tasks, so I suspect there are standard idiomatic
    Kenneth> way of doing these. Could anyone refer me to examples
    Kenneth> showing

Actually, neither of these exist in matplotlib-0.52, but see below.

    Kenneth> 1) How to most easily label the x axis for data which is
    Kenneth> plotted by date? (More specifically; does matplotlib have
    Kenneth> any understanding of date values, and if so, how do I
    Kenneth> access and use it?) I'm hoping there's an easier way than
    Kenneth> explicitly labelling ticks on the x axis.

Full date support in matplotlib-0.53.  Release should be this
afternoon.  The new examples will be examples/date_demo*.py.

    Kenneth> 2) I'll be drawing logy graphs, and I want a certain
    Kenneth> slope to indicate a certain rate of growth, which means
    Kenneth> that, when using matplotlib via TkAgg, I want it to keep
    Kenneth> the ratio of the graph display height and display width
    Kenneth> constant as it resizes the graph to take into account
    Kenneth> changes in the size of the enclosing window. Is there a
    Kenneth> standard way to do this?

This is a good idea but it's not implemented and should be.  How do
you think the best way is to indicate a constrained resize?  With a
modifier key held down during the resize?

JDH