From: Tim Å. <qw...@ho...> - 2010-11-22 09:30:32
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Solved it, was thinking backwards again. From: qw...@ho... To: mat...@li... Date: Mon, 22 Nov 2010 09:00:38 +0000 Subject: Re: [Matplotlib-users] Formatter dates Thanks for the reply! I have been looking into it now and thinks i have get the hang of how it works rougly. Do you know any way to know the max-value of X straight away? I have a list of dates that with listlength Y, the X spans from 0 - something. So if i could figure out what "something" is i could get the ratio and then plot the dates by indexing the ratio times X eg. (Xmax / listlength) * X. // 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 ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev _______________________________________________ Matplotlib-users mailing list Mat...@li... https://lists.sourceforge.net/lists/listinfo/matplotlib-users |