matplotlib-users Mailing List for matplotlib

Hello,
I am generating a bar chart following the code in this example:
http://matplotlib.sourceforge.net/examples/pylab_examples/barh_demo.html.
I am wondering if it is possible to have bar with a colormap (using
http://matplotlib.sourceforge.net/examples/pylab_examples/show_colormaps.html).
The only piece of code I found close to this is this example:
http://matplotlib.sourceforge.net/examples/api/colorbar_only.html.
Thanks for your help,
Sylvain.

Hello,
I am generating a bar chart following the code in this example:
http://matplotlib.sourceforge.net/examples/pylab_examples/barh_demo.html.
I am wondering if it is possible to have bar with a colormap (using
http://matplotlib.sourceforge.net/examples/pylab_examples/show_colormaps.html).
The only piece of code I found close to this is this example:
http://matplotlib.sourceforge.net/examples/api/colorbar_only.html.
Thanks for your help,
Sylvain.

On Tue, Sep 28, 2010 at 3:05 PM, John Hunter <jd...@gm...> wrote:
> On Tue, Sep 28, 2010 at 2:10 PM, Ruggero <giu...@gm...> wrote:
>
> > really there is no way to place the xlabel on the right as here:
> > http://www.cernlove.org/blog/wp-content/uploads/2009/10/root_plot1d.png ?
>
>
> Sorry, I misread the meaning of "and on the top for y axis". As Ben
> noted, if all you want to do is move the x-alignment, you can pass
> horizontalalignment to the xlabel command.
>
>
Just to make it clear for anyone coming across this thread,
horizontalalignment alone won't do it. 'ha' only specifies the alignment
relative to the text coordinate point, which is 0.5 by default for axis
labels. It is by specifying the x (for xlabel) or the y (for ylabel) that
will actually move the axis label in any usable fashion.
Ben Root

On Tue, Sep 28, 2010 at 2:10 PM, Ruggero <giu...@gm...> wrote:
> really there is no way to place the xlabel on the right as here:
> http://www.cernlove.org/blog/wp-content/uploads/2009/10/root_plot1d.png ?
Sorry, I misread the meaning of "and on the top for y axis". As Ben
noted, if all you want to do is move the x-alignment, you can pass
horizontalalignment to the xlabel command.

On Tue, Sep 28, 2010 at 2:10 PM, Ruggero <giu...@gm...> wrote:
> 2010年9月28日 John Hunter <jd...@gm...>:
> > On Tue, Sep 28, 2010 at 10:04 AM, Ruggero <giu...@gm...> wrote:
> >> As in the title: usually axis label on the x axis is plottet in the
> >> middle of the axis. How to move it on the right? (and on the top for y
> >> axis)
> >
> > You cannot coerce the xlabel to the top because it's y position is
> > determined at drawtime to avoid overlapping the tick labels. But you
> > can place an arbitrary piece of text up there
> >
> > text(1.0, 1.02, 'testing', horizontalalignment='right',
> > verticalalignment='bottom', fontsize=14)
> >
> > See also
> >
> > http://matplotlib.sourceforge.net/users/index_text.html
> >
> > and
> >
> >
> http://matplotlib.sourceforge.net/examples/pylab_examples/alignment_test.html
> >
> > JDH
> >
>
> really there is no way to place the xlabel on the right as here:
> http://www.cernlove.org/blog/wp-content/uploads/2009/10/root_plot1d.png ?
>
> I don't want to edit the y position of x label, I want to modify the x
> position of x label and the y position of y label
>
>
Yes, there is...
When calling .set_xlabel(), you can specify the x coordinate of the label
(in units of percentage of the axis width) without naming the y coordinate
(that will be set automatically). You might have to fiddle with the 'ha'
(horizontalalignment) keyword (choices are 'center', 'left', 'right') in
order to align your text relative to the coordinate you choose.
ex:
ax.set_xlabel('Time (s)', x=0.95, ha='right')
You can do the same thing with the 'y' keyword in .set_ylabel(). Instead of
'ha', you use 'va' (verticalalignment) in that case (choices: 'top',
'bottom', 'center', 'baseline').
Maybe we should add an example into the documentation for set_xlabel() and
set_ylabel()? I can see this as a reasonable enough feature for some to
want to seek out.
Ben Root
P.S. - I just noticed that the axis label 'remembers' the keyword properties
that were used in previous calls to set_?label() on that axis. In other
words, if at one point I specify that the ylabel should be at y=0.25 and
then in a subsequent call to set_ylabel(), I don't specify anything at all,
the previous value is used rather than the default.
Don't know if that is a feature or a bug, but this kind of thing would be
more obvious as matplotlib becomes more interactive. At the least, it
probably should be documented in some way.

2010年9月28日 John Hunter <jd...@gm...>:
> On Tue, Sep 28, 2010 at 10:04 AM, Ruggero <giu...@gm...> wrote:
>> As in the title: usually axis label on the x axis is plottet in the
>> middle of the axis. How to move it on the right? (and on the top for y
>> axis)
>
> You cannot coerce the xlabel to the top because it's y position is
> determined at drawtime to avoid overlapping the tick labels. But you
> can place an arbitrary piece of text up there
>
> text(1.0, 1.02, 'testing', horizontalalignment='right',
> verticalalignment='bottom', fontsize=14)
>
> See also
>
> http://matplotlib.sourceforge.net/users/index_text.html
>
> and
>
> http://matplotlib.sourceforge.net/examples/pylab_examples/alignment_test.html
>
> JDH
>
really there is no way to place the xlabel on the right as here:
http://www.cernlove.org/blog/wp-content/uploads/2009/10/root_plot1d.png ?
I don't want to edit the y position of x label, I want to modify the x
position of x label and the y position of y label

On Tue, Sep 28, 2010 at 11:29 AM, John Hunter <jd...@gm...> wrote:
> On Tue, Sep 28, 2010 at 10:04 AM, Ruggero <giu...@gm...> wrote:
>> As in the title: usually axis label on the x axis is plottet in the
>> middle of the axis. How to move it on the right? (and on the top for y
>> axis)
>
> You cannot coerce the xlabel to the top because it's y position is
> determined at drawtime to avoid overlapping the tick labels. But you
> can place an arbitrary piece of text up there
>
> text(1.0, 1.02, 'testing', horizontalalignment='right',
> verticalalignment='bottom', fontsize=14)
Oops, forgot to set the transform. That should read
text(1.0, 1.02, 'testing', horizontalalignment='right',
verticalalignment='bottom',
 fontsize=14, transform=ax.transAxes)
For more on transforms and the various coordinate systems, see
http://matplotlib.sourceforge.net/users/transforms_tutorial.html
JDH

On Tue, Sep 28, 2010 at 10:04 AM, Ruggero <giu...@gm...> wrote:
> As in the title: usually axis label on the x axis is plottet in the
> middle of the axis. How to move it on the right? (and on the top for y
> axis)
You cannot coerce the xlabel to the top because it's y position is
determined at drawtime to avoid overlapping the tick labels. But you
can place an arbitrary piece of text up there
 text(1.0, 1.02, 'testing', horizontalalignment='right',
verticalalignment='bottom', fontsize=14)
See also
 http://matplotlib.sourceforge.net/users/index_text.html
and
 http://matplotlib.sourceforge.net/examples/pylab_examples/alignment_test.html
JDH

As in the title: usually axis label on the x axis is plottet in the
middle of the axis. How to move it on the right? (and on the top for y
axis)

On Tue, Sep 28, 2010 at 1:36 AM, Aman Thakral <ama...@gm...> wrote:
> Hi,
>
> Is there a way to change the way a Pick event occurs? Instead of a mouse
> click, is it possible to use a mouse hover? I'm just curious because I'm
> developing a wx application and would like to have a Tooltip over various
> artists.
>
This is not possible.
However, I think what you can do is to use the mouse move event.
This requires some effort from your side but should be doable.
Others may have better solution though.
-JJ
> Thanks,
> Aman
>
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>

On Sun, Sep 26, 2010 at 4:11 AM, Jouni K. Seppänen <jk...@ik...> wrote:
> I'm not sure either. It seems that the two-number form of the bounding
> box is meant to create a degenerate bounding box so that any kind of
> location specifier ("upper right", "lower center", etc) will always hit
> that exact place, but perhaps naturally that makes it difficult to move
> the box around.
>
In the current implementation, the legend location (Legend.loc) is set
in the normalized coordinate of the bbox_to_anchor (and later
transformed to the "canvas coordinate" during the drawing time).
On the other hand, when the legend is moved by a user, it tries to
update Legend.loc from the current position of the legend in the
canvas coordinate, which results in NaNs if the bbox_to_anchor has
zero width and zero height. A workaround is to set the bbox_to_anchor
to its default value (Axes.bbox) when this happens. While I think it
is reasonable thing to do, let me know of any other opinion.
A patch is attached.
Unless there is no objection, I'll commit the patch soon.
Regards,
-JJ

On Mon, Sep 27, 2010 at 20:10, Jae-Joon Lee <lee...@gm...> wrote:
> For your original script that uses axes_grid1 toolkit, you can do something like
>
>  host.axis["left"].major_ticklabels.set_color(p1.get_color())
>  par1.axis["right"].major_ticklabels.set_color(p2.get_color())
>  par2.axis["right"].major_ticklabels.set_color(p3.get_color())
Cool, it worked nicely.
> Note that these are only effective when you use axes_grid1 toolkit.
>
> Regards,
>
> -JJ
>
> On Tue, Sep 28, 2010 at 1:35 AM, Filipe Pires Alvarenga Fernandes
> <oc...@gm...> wrote:
>> I was wondering if there is a way to get a effect similar to this example:
>>
>> http://matplotlib.sourceforge.net/examples/api/two_scales.html?highlight=codex%20two%20scale
>>
>> Here The yticklabels have the same color as the label, but using host/parasite:
>>
>> http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes2.html
>>
>>
>> I tried:
>>
>> for tl in host.axis["right"].axis.axes.get_xticklabels():
>>  tl.set_color('b')
>>
>> without success.
>>
>> Thanks, Filipe.
>>
>> ------------------------------------------------------------------------------
>> Start uncovering the many advantages of virtual appliances
>> and start using them to simplify application deployment and
>> accelerate your shift to cloud computing.
>> http://p.sf.net/sfu/novell-sfdev2dev
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>

For your original script that uses axes_grid1 toolkit, you can do something like
 host.axis["left"].major_ticklabels.set_color(p1.get_color())
 par1.axis["right"].major_ticklabels.set_color(p2.get_color())
 par2.axis["right"].major_ticklabels.set_color(p3.get_color())
Note that these are only effective when you use axes_grid1 toolkit.
Regards,
-JJ
On Tue, Sep 28, 2010 at 1:35 AM, Filipe Pires Alvarenga Fernandes
<oc...@gm...> wrote:
> I was wondering if there is a way to get a effect similar to this example:
>
> http://matplotlib.sourceforge.net/examples/api/two_scales.html?highlight=codex%20two%20scale
>
> Here The yticklabels have the same color as the label, but using host/parasite:
>
> http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes2.html
>
>
> I tried:
>
> for tl in host.axis["right"].axis.axes.get_xticklabels():
>  tl.set_color('b')
>
> without success.
>
> Thanks, Filipe.
>
> ------------------------------------------------------------------------------
> Start uncovering the many advantages of virtual appliances
> and start using them to simplify application deployment and
> accelerate your shift to cloud computing.
> http://p.sf.net/sfu/novell-sfdev2dev
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>