Re: [Matplotlib-users] Plot data with specified time (hour, minute, second)

[Johan M. <joh...@gm...>]

Hello
I think that my problem is linked to the data struture that I'm using for
the dates since my error message is : "ValueError: setting an array element
with a sequence."
I use list data structure, the one that you can declare through :
datetime_list = [].
And maybe I souldn't use this type of data structure and another one.

Regards
Johan Mazel
*



*2008/4/29 Johan Mazel <joh...@gm...>:

> Ok.
> I tried to do the job through the old way and it's working.
> But I have the latest version (0.91.2). Is it possible that my version
> wasn't successfully installed and that an older one is doing the job ?
> Anyway, thanks a lot for the (fast) help.
> Johan
>
> 2008/4/29 John Hunter <jd...@gm...>:
>
> > On Tue, Apr 29, 2008 at 12:10 PM, Johan Mazel <joh...@gm...>
> > wrote:
> > > When you wrote "import matplotlib.ticker", you meant "from
> > matplotlib.dates
> > > import ticker" ?
> >
> > No sorry, I meant "import matplotlib.ticker as ticker"
> >
> > > I think I have a bug or something because I get an error like
> > "ValueError:
> > > setting an array element with a sequence." with a lot of debug stuff
> > from
> > > python and MatPlotLib
> > >  The line concerned is the one where I do
> > plot(datetime_list,data_list).
> > > It's very strange because just before I use "my_datetime.strftime("%d
> > %H %M
> > > %S")" with my_datetime as an element of my list and it works
> > perfectly.
> >
> >
> > Possibly your matplotlib version is a bit old.  With the latest
> > release (0.91.2) you can pass sequences of native datetimes in.  For
> > older versions, you had to convert your dates to numbers first:
> >
> > import matplotlib.dates as mpldates
> >
> > d = mpldates.date2num(datetime_list)
> > ax.plot_date(d, ydata)
> >
> > JDH
> >
>
>