Re: [Matplotlib-users] possible bug with linestyle='steps'

[Ryan K. <rya...@gm...>]

Oh, and in case it matters I am running

In [36]: matplotlib.__version__
Out[36]: '0.98.5.2'

on Ubuntu 9.04 (with the rather lame name of Jaunty Jackolope).

On Fri, May 15, 2009 at 6:51 PM, Ryan Krauss <rya...@gm...> wrote:

> I think I used to use plot with linestyle='steps' to plot data for
> zero-order hold control systems.  This means that if the system is updating
> on a period of 0.01 seconds (100 Hz), the values should be considered held
> from 0 to 0.0099999999999999 and then from 0.01 to 0.01999999999 and so on
> each time step.  So, what I want is a plot that looks like late_steps.png
> (hopefully attached), but what I am currently getting is early_steps.png.
>
> This code snippet recreates my problem.  My t2 hack almost makes the plot
> look right.
>
> t = arange(0,0.1,0.01)
> y = 10*t
> clf()
> plot(t,y,linestyle='steps')
> plot(t,y,'o')
> savefig('early_steps.png')
>
> t2 = t+0.01
> clf()
> plot(t2,y,linestyle='steps')
> plot(t,y,'o')
> savefig('late_steps.png')
>
>
>
> Is this a bug, is this the expected behavior for other applications, or can
> this be changed with some configuration setting?
>
> Thanks,
>
> Ryan
>