matplotlib-users

[Matplotlib-users] Width of tick lines

[Torsten H. <tor...@gm...>]

Hello,

I am looking for an way to set the width of the tick lines in a plot.  
I have not found any rc parameter for this.

Doing:

plot(...)
c=gca()
tl=c.get_ticklines()

gives a list of tickline objects. Every tickline object has a method  
tl[0].set_linewidth(). Calling this method with different float  
parameters seems to have no effect.

Thanks for any hint on this,
	Torsten. 

Re: [Matplotlib-users] Width of tick lines

[Eric F. <ef...@ha...>]

Torsten Hahn wrote:
> Hello,
> 
> I am looking for an way to set the width of the tick lines in a plot.  
> I have not found any rc parameter for this.

Good point; it does seem to be a gap in the configurability.

> 
> Doing:
> 
> plot(...)
> c=gca()
> tl=c.get_ticklines()
> 
> gives a list of tickline objects. Every tickline object has a method  
> tl[0].set_linewidth(). Calling this method with different float  
> parameters seems to have no effect.

Use tl[0].set_markeredgewidth(); ticks are implemented as markers now to 
take advantage of backend optimization of marker rendering.  No, this is 
not obvious!

Eric

Re: [Matplotlib-users] Width of tick lines

[Torsten H. <tor...@gm...>]

Am 21.08.2007 um 10:30 schrieb Eric Firing:

> Torsten Hahn wrote:
>> Hello,
>> I am looking for an way to set the width of the tick lines in a  
>> plot.  I have not found any rc parameter for this.
>
> Good point; it does seem to be a gap in the configurability.

Would be nice to have sopmething added in a future release.

>> Doing:
>> plot(...)
>> c=gca()
>> tl=c.get_ticklines()
>> gives a list of tickline objects. Every tickline object has a  
>> method  tl[0].set_linewidth(). Calling this method with different  
>> float  parameters seems to have no effect.
>
> Use tl[0].set_markeredgewidth(); ticks are implemented as markers  
> now to take advantage of backend optimization of marker rendering.   
> No, this is not obvious!

Ok that works but i run into another problem. If you use log or  
loglog plots e.g.

ax = py.subplot(111)
ax.loglog(data)
xtl = ax.get_xticklines()
ytl = ax.get_yticklines()

xtl and ytl are now lists with 2 entrys, one for every axis (for xtl,  
top and bottom x-axis).

top_xtl = xtl[1]

The problem is, that there only the major ticklines are returned by  
ax.get_xticklines(). How do i access (and modify) the minor ticklines?

Torsten.

Re: [Matplotlib-users] Width of tick lines

[John H. <jd...@gm...>]

On 8/21/07, Torsten Hahn <tor...@gm...> wrote:

> The problem is, that there only the major ticklines are returned by
> ax.get_xticklines(). How do i access (and modify) the minor ticklines?


In [80]: for tick in ax.xaxis.get_major_ticks():
    print tick.tick1line, tick.tick2line
   ....:
Line2D((0,0)) Line2D((0,1))
Line2D((0,0)) Line2D((0,1))
Line2D((0,0)) Line2D((0,1))
Line2D((0,0)) Line2D((0,1))
Line2D((0,0)) Line2D((0,1))
Line2D((0,0)) Line2D((0,1))

In [82]: for tick in ax.xaxis.get_minor_ticks():
    print tick.tick1line, tick.tick2line
   ....:

for the xaxis, tick1line is the left tick, tick2line is the right
tick.  for the y axis they are the bottom and top.


Here is the help on the tick attrs:

In [85]: from matplotlib.axis import Tick

In [87]: print Tick.__doc__

    Abstract base class for the axis ticks, grid lines and labels

    1 refers to the bottom of the plot for xticks and the left for yticks
    2 refers to the top of the plot for xticks and the right for yticks

    Publicly accessible attributes

      tick1line  : a Line2D instance
      tick2line  : a Line2D instance
      gridline   : a Line2D instance
      label1     : a Text instance
      label2     : a Text instance
      gridOn     : a boolean which determines whether to draw the tickline
      tick1On    : a boolean which determines whether to draw the 1st tickline
      tick2On    : a boolean which determines whether to draw the 2nd tickline
      label1On   : a boolean which determines whether to draw tick label
      label2On   : a boolean which determines whether to draw tick label