From: Tim Å. <qw...@ho...> - 2010-11-23 14:59:14
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Thanks for the reply! Do you know what makes X climb? And can you control its on some way? // Tim > From: jd...@gm... > Date: Wed, 17 Nov 2010 05:55:04 -0600 > Subject: Re: [Matplotlib-users] Formatter dates > To: qw...@ho... > CC: mat...@li... > > On Wed, Nov 17, 2010 at 2:29 AM, Tim Åberg <qw...@ho...> wrote: > > Hello! > > > > I have now been tampering with a custom formatter and the more i think about > > it the more i feel there must be a more easy soulution. I have a set of > > values that are plotted over time (i use date2num, to get the conversion > > from date to num), i also have a list with dates that corresponds to these > > values; > > ['2010-11-05 10:27:45.605000', '2010-11-05 10:27:50.576000', '2010-11-05 > > 10:27:55.913000'], this to not have to do a conversion back, i imagine its > > the most effective way to do it. > > > > Now to the question; > > > > The only two values in the datelist that is vital is the first and the last, > > in between i really just want to have values that corresponds lineary. Thats > > brings me to resoulution, if the values are far far in between, say weeks or > > even moth the time (h:s:ms) isnt so important and vice versa. > > > > Is there any formatter that do this sort of things? eg. takes in two > > values(dates) and format it by itself. > > Take a look at this example > > http://matplotlib.sourceforge.net/examples/api/date_index_formatter.html > > It's trying to solve a different but related problem: in financial > time series you only have data on Monday - Friday, and you don't want > to plot the gaps on weekends. So you plot the data linearly with an > index, and use a custom locator and formatter to set and format the > ticks. > > JDH |