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Thanks Paul, that solved the problem.

    matplotlib.rcParams['axes.linewidth'] = 0.5
    matplotlib.rcParams['patch.linewidth'] = 0.5

is what I wanted and I'll put that in matplotlibrc.

Previously I thought that this is related to some anti-aliasing
setting that would affect all lines drawn. But as it is possible to
set this preference to custom plot elements, this is what I would
always prefer. Default setting looks too blurry for horizontal and
vertical lines.


Cheers

On Sat, Jun 29, 2013 at 11:49 PM, Paul Hobson <pmh...@gm...> wrote:
> You need to thin out the default line widths in your matplotlibrc file.
>
> Something like:
> import matplotlib
> matplotlib.rcParams['axes.linewidth'] = 0.5
> matplotlib.rcParams['lines.linewidth'] = 0.5
>
> ...if you don't want to edit your matplotlibrc file.
>
> Hope that helps,
> -paul

You need to thin out the default line widths in your matplotlibrc file.

Something like:
import matplotlib
matplotlib.rcParams['axes.linewidth'] = 0.5
matplotlib.rcParams['lines.linewidth'] = 0.5

...if you don't want to edit your matplotlibrc file.

Hope that helps,
-paul


On Sat, Jun 29, 2013 at 10:48 AM, klo uo <kl...@gm...> wrote:

> This code:
>
> ========================================
> import matplotlib.pyplot as plt
>
> plt.plot([1,2,5,3,4], label='line')
> plt.legend()
> plt.show()
> ========================================
>
> shows this image: http://i.imgur.com/KMPywSp.png
>
> I want axis and legend box with 1px line, like this:
> http://i.imgur.com/Qmb4e6C.png but can't find any pointers except
> turning anti-aliasing off for all plot lines, which is not what I
> want.
>
> Is this anyhow possible?
>
>
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This kind of sounds like stack plots, but I am not quite sure.

Cheers!
Ben Root
On Jun 29, 2013 1:45 AM, "mdekauwe" <mde...@gm...> wrote:

> Hi,
>
> I am plotting overlapping bars in a bar chart. In some places one bar
> overlaps the other so I would like to draw a horizontal line to show where
> the underlying bar extends to. My plots are postscripts so I can't use
> alpha. The only way I could come up with involves me figuring out by trial
> and error where each bar starts, for example:
>
> bar_width = 0.068
> xmin_line = 0.198
> xmax_line = xmin_line+bar_width
> plt.axhline(y=data_biomass[2], xmin=xmin_line, xmax=xmax_line, linewidth=2,
> color="b")
>
> Is there a way I can work out where each bar starts and how wide it is? I
> tried ax.get_xticks, but these don't match with the above function which
> only seems to be a fraction of 0 - 1.
>
> thanks,
>
> Martin
>
>
>
>
> --
> View this message in context:
> http://matplotlib.1069221.n5.nabble.com/drawing-horizontal-line-on-bar-chart-tp41333.html
> Sent from the matplotlib - users mailing list archive at Nabble.com.
>
>
> ------------------------------------------------------------------------------
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>
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This code:

========================================
import matplotlib.pyplot as plt

plt.plot([1,2,5,3,4], label='line')
plt.legend()
plt.show()
========================================

shows this image: http://i.imgur.com/KMPywSp.png

I want axis and legend box with 1px line, like this:
http://i.imgur.com/Qmb4e6C.png but can't find any pointers except
turning anti-aliasing off for all plot lines, which is not what I
want.

Is this anyhow possible?

Hi,

I am plotting overlapping bars in a bar chart. In some places one bar
overlaps the other so I would like to draw a horizontal line to show where
the underlying bar extends to. My plots are postscripts so I can't use
alpha. The only way I could come up with involves me figuring out by trial
and error where each bar starts, for example:

bar_width = 0.068
xmin_line = 0.198
xmax_line = xmin_line+bar_width
plt.axhline(y=data_biomass[2], xmin=xmin_line, xmax=xmax_line, linewidth=2,
color="b")

Is there a way I can work out where each bar starts and how wide it is? I
tried ax.get_xticks, but these don't match with the above function which
only seems to be a fraction of 0 - 1.

thanks,

Martin
        



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View this message in context: http://matplotlib.1069221.n5.nabble.com/drawing-horizontal-line-on-bar-chart-tp41333.html
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