Re: [Matplotlib-users] Plotting boolean/logical data type

[Friedrich R. <fri...@gm...>]

2010/3/4 Timo Heine <tim...@gm...>:
> Basically what I want to do is to draw a horizontal line with relative y
> co-ordinates and absolute xmin and xmax co-ordinate. Then I could draw a
> line when a bit is high and have it always in plot area even when zooming
> etc. Like axhline(...) but with relative y and absolute x
> co-ordinates.

I found a better solution candidate now, but I don't know whether it works:

import matplotlib.transforms
import matplotlib.lines

<create Axes instance by calling fig.add_axes() or fig.add_subplot()>

trans = matplotlib.transforms.blended_transform_factory(axes.transData,
axes.transAxes)
line = matplotlib.lines.Line2D([xmin, xmax], [yrel, yrel], transform =
trans, <whatever like color = 'r'>)
line.y_isdata = False
axes.add_line(line)

The code is taken from axes.py:Axes.axhline() with some alterations.

Friedrich