On Jul 20, 8:55 am, arsyed <[EMAIL PROTECTED]> wrote: > On Jul 19, 3:09 pm, Durand <[EMAIL PROTECTED]> wrote: > > > Hi, > > > I'm trying to plot a simple graph against date or time using matplotlib. > > I've read about date_plot but I'm not really sure how to use it. At the > > moment, I have some data arranged into lists, where list1 contains x values > > (time) and list2 contains y values just like is needed for the normal plot > > function. The time values are simply the output of datetime.date.today(), > > etc which I don't mind changing the format of. > > > My question is, how do I plot the graph with list1 on the x axis and list2 > > on the y axis. Using plot and unixtime I get a very ugly scale as is to be > > expected so I want to know how to use the date_plot function efficiently. > > At the moment, I'm only concerned about the actual plotting but help with > > Locater Ticks (Months and Years) is also very appreciated. > > > Thanks a lot! > > I'm not sure if this is what you're looking for, but here's a quick > sample that uses plot_date to plot some random values. > > import pylab, random > from datetime import datetime, timedelta > > today = datetime.now() > > dates = [today + timedelta(days=i) for i in range(10)] > values = [random.randint(1, 20) for i in range(10)] > pylab.plot_date(pylab.date2num(dates), values, linestyle='-')
Oooh, this is almost what I want but I'm not really sure how I'd incorporate this into real dates... If I have a list of dates like ['2008-07-18 14:36:53.494013', '2008-07-20 14:37:01.508990', '2008-07-28 14:49:26.183256'], how would I convert it to a format that pylab can understand? When I tried type(datetime.now()) it gave me datetime.datetime whereas the objects in this list are strings...Am I doing something wrong here? -- http://mail.python.org/mailman/listinfo/python-list
