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    <p>Honestly, the easiest way is going to be to monkeypatch the TimeFormatter's _formats dictionary:</p> <pre><code>from enthought.chaco.scales.formatters import TimeFormatter TimeFormatter._formats['days'] = ('%d/%m', '%d%a',) </code></pre> <p>If you don't want to do this, then you need to subclass TimeFormatter. That's easy. What's more cumbersome is making all the existing scale systems that the chaco.scales package creates use your new subclass rather than the built-in TimeFormatter. If you look at scales.time_scale.TimeScale, it accepts a 'formatter' keyword argument in the constructor. So, at the bottom of time_scale.py, when the MDYScales list is built, you'd have to create your own:</p> <pre><code>EuroMDYScales = [TimeScale(day_of_month=range(1,31,3), formatter=MyFormatter()), TimeScale(day_of_month=(1,8,15,22), formatter=MyFormatter()), TimeScale(day_of_month=(1,15), formatter=MyFormatter()), TimeScale(month_of_year=range(1,13), formatter=MyFormatter()), TimeScale(month_of_year=range(1,13,3), formatter=MyFormatter()), TimeScale(month_of_year=(1,7), formatter=MyFormatter()), TimeScale(month_of_year=(1,), formatter=MyFormatter())] </code></pre> <p>Then, when you create the ScalesTickGenerator, you need to pass in these scales to the ScaleSystem:</p> <pre><code>euro_scale_system = CalendarScaleSystem(*(HMSScales + EuroMDYScales)) tick_gen = ScalesTickGenerator(scale=euro_scale_system) </code></pre> <p>Then you can create the axis, giving it this tick generator:</p> <pre><code>axis = PlotAxis(tick_generator = tick_gen) </code></pre> <p>HTH, sorry this is about a month lag. I don't really check StackOverflow very much. If you have other chaco questions, I'd recommend signing up on the chaco-users mailing list...</p>
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    1. COPlease notes if you use TimeFormatter._format solutions, you must set it before have it other chaco import statements, otherwise it has no effective.
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