matplotlib-users Mailing List for matplotlib

On Saturday, January 7, 2012, Jae-Joon Lee <lee...@gm...> wrote:
> Please post a complete (but simple) example that we can easily test.
> Doing the *subplot_adjust* will mess up the location of colorbars, but
> I believe that colorbars should be still there.
> If you're using v1.1 and later, see if using the "use_gridspec"
> parameter works. For example,
>
> colorbar(use_gridspec=True)
>
> Regards,
>
> -JJ
>
>

Personally, I just simply use the AxesGrid1 toolkit which automatically
allocates space for colorbars if I tell it to.  Very easy to use.

Ben Root

On Saturday, January 7, 2012, Mingkui Li <ken...@gm...> wrote:
> Yes, I think this is the origin of the Error.
> Thank you all!
> BTW, why the email title of all other people posts begin with
'[matplotlib-user]'? does this should be added by hand every time when I
post a topic?
>

No, don't do that.  The added part of the title is done automatically by
the list server. However, on this list, we post replies on the bottom.

Ben Root

On Fri, Jan 6, 2012 at 4:56 AM, Skipper Seabold <jss...@gm...> wrote:
> but when I call show, it seems the width of
> the box is reset.

Yes. Because the location of the texts are backend-dependent, the
location of the xbox surrounding the text are recalculated during the
drawing time. I don't think there is no easy workaround unfortunately.

If you are experienced in matplotlib, you may try is to rewrite the
get_path method of the bbox. The example code below, while a bit
complicated, tries to make the the bbox align with the axes.


ax.title.set_ha("left")
bbox_get_path = bbox.get_path
def my_get_path():
    pad = bbox.get_boxstyle().pad*bbox.get_mutation_scale()
    x0, y0 = bbox.get_transform().transform_point((0,0))
    xx = ax.bbox.x0 - x0
    bbox.set_x(xx+pad)
    bbox.set_width(ax.bbox.width-2*pad)
    return bbox_get_path()
bbox.get_path = my_get_path

regards,

-JJ

Please post a complete (but simple) example that we can easily test.
Doing the *subplot_adjust* will mess up the location of colorbars, but
I believe that colorbars should be still there.
If you're using v1.1 and later, see if using the "use_gridspec"
parameter works. For example,

colorbar(use_gridspec=True)

Regards,

-JJ


On Sat, Jan 7, 2012 at 8:34 PM, davcra <dcd...@gm...> wrote:
>
> Hi, I need to add a colorbar to each plot in a subplot but cant seem to get
> it to work. My code is as follows,
>
> # Plot time series of slowness, baz, abs.power and rel.power
> labels = 'rel.power abs.power baz slow'.split()
>
> fig = plt.figure()
> for i, lab in enumerate(labels):
>    ax = fig.add_subplot(4, 1, i + 1)
>    ax.scatter(out[:, 0], out[:, i + 1], c=out[:, 1], alpha=0.6,
>               edgecolors='none')
>    ax.set_ylabel(lab)
>    colorbar()
> fig.autofmt_xdate()
> fig.subplots_adjust(top=0.95, right=0.95, bottom=0.2, hspace=0.25)
> plt.show()
>
> Dont get any error but the colorbar is missing from the plot, anyone know
> how it is done????
> --
> View this message in context: http://old.nabble.com/Colorbar-on-each-subplot-tp33098035p33098035.html
> Sent from the matplotlib - users mailing list archive at Nabble.com.
>
>
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Hi, I need to add a colorbar to each plot in a subplot but cant seem to get
it to work. My code is as follows,

# Plot time series of slowness, baz, abs.power and rel.power
labels = 'rel.power abs.power baz slow'.split()

fig = plt.figure()
for i, lab in enumerate(labels):
    ax = fig.add_subplot(4, 1, i + 1)
    ax.scatter(out[:, 0], out[:, i + 1], c=out[:, 1], alpha=0.6,
               edgecolors='none')
    ax.set_ylabel(lab)
    colorbar()
fig.autofmt_xdate()
fig.subplots_adjust(top=0.95, right=0.95, bottom=0.2, hspace=0.25)
plt.show()

Dont get any error but the colorbar is missing from the plot, anyone know
how it is done????
-- 
View this message in context: http://old.nabble.com/Colorbar-on-each-subplot-tp33098035p33098035.html
Sent from the matplotlib - users mailing list archive at Nabble.com.

Hi, I need to add a colorbar to each plot in a subplot but cant seem to get
it to work. My code is as follows,

# Plot time series of slowness, baz, abs.power and rel.power
labels = 'rel.power abs.power baz slow'.split()

fig = plt.figure()
for i, lab in enumerate(labels):
    ax = fig.add_subplot(4, 1, i + 1)
    ax.scatter(out[:, 0], out[:, i + 1], c=out[:, 1], alpha=0.6,
               edgecolors='none')
    ax.set_ylabel(lab)
    colorbar()
fig.autofmt_xdate()
fig.subplots_adjust(top=0.95, right=0.95, bottom=0.2, hspace=0.25)
plt.show()

Dont get any error but the colorbar is missing from the plot, anyone know
how it is done????
-- 
View this message in context: http://old.nabble.com/How-to-use-colorbar-in-subplot-tp33097878p33097878.html
Sent from the matplotlib - users mailing list archive at Nabble.com.

Yes, I think this is the origin of the Error.
Thank you all!

BTW, why the email title of all other people posts begin with
'[matplotlib-user]'? does this should be added by hand every time when I
post a topic?

On Sat, Jan 7, 2012 at 11:44 AM, Michiel de Hoon <mjl...@ya...>wrote:

> The problem seems to originate from this line in lib/matplotlib/sankey.py:
>
>         patch = PathPatch(Path(vertices, codes),
>                           fc=kwargs.pop('fc', kwargs.pop('facecolor',
>                                         '#bfd1d4')), # Custom defaults
>                           lw=kwargs.pop('lw', kwargs.pop('linewidth',
>                                         '0.5')),
>                           **kwargs)
>
> Note that the linewidth is set to the string '0.5' rather than the float
> 0.5. gc.set_linewidth is then called with the string '0.5' as the argument,
> which triggers the error. If I replace '0.5' by 0.5, the example runs fine
> with the MacOSX backend.
>
> Is there a reason why this needs to be a string here? I would think that
> in general gc.set_linewidth should only accept floats and ints.
>
> -Michiel.
>
>
>
>
> --- On *Fri, 1/6/12, Mingkui Li <ken...@gm...>* wrote:
>
>
> From: Mingkui Li <ken...@gm...>
> Subject: [Matplotlib-users] matplotlib 1.1 "TypeError: a float is
> required" problem
> To: mat...@li...
> Date: Friday, January 6, 2012, 10:54 AM
>
>
> I just updated matplotlib to 1.1 and want try the new features Sankey
> Diagrams
>
> and
> Animation
>
> but when I try the api example code: sankey_demo_basics.py
>
> I got the error messages as below:
>
> ==============================================================================
> Traceback (most recent call last):
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py",
> line 55, in draw_wrapper
>     draw(artist, renderer, *args, **kwargs)
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/figure.py",
> line 884, in draw
>     func(*args)
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py",
> line 55, in draw_wrapper
>     draw(artist, renderer, *args, **kwargs)
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/axes.py",
> line 1983, in draw
>     a.draw(renderer)
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py",
> line 55, in draw_wrapper
>     draw(artist, renderer, *args, **kwargs)
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/patches.py",
> line 385, in draw
>     gc.set_linewidth(lw)
> TypeError: a float is required
> Traceback (most recent call last):
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py",
> line 55, in draw_wrapper
>     draw(artist, renderer, *args, **kwargs)
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/figure.py",
> line 884, in draw
>     func(*args)
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py",
> line 55, in draw_wrapper
>     draw(artist, renderer, *args, **kwargs)
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/axes.py",
> line 1983, in draw
>     a.draw(renderer)
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py",
> line 55, in draw_wrapper
>     draw(artist, renderer, *args, **kwargs)
>   File
> "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/patches.py",
> line 385, in draw
>     gc.set_linewidth(lw)
> TypeError: a float is required
>
> ==================================================================================
>
> Then I looked into the
> file /Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/patches.py
> at the line 384 the code is: gc.set_linewidth(lw)
> I added  "lw = np.float(lw)" before "gc.set_linewidth(lw)", then the
> example code runs successfully.
>
> Any help?
>
> Thanks for any reply.
>
> --
> Mingkui Li
>
>
> -----Inline Attachment Follows-----
>
>
>
> ------------------------------------------------------------------------------
> Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex
> infrastructure or vast IT resources to deliver seamless, secure access to
> virtual desktops. With this all-in-one solution, easily deploy virtual
> desktops for less than the cost of PCs and save 60% on VDI infrastructure
> costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox
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>
>


-- 
Mingkui Li

The problem seems to originate from this line in lib/matplotlib/sankey.py:

        patch = PathPatch(Path(vertices, codes),
                          fc=kwargs.pop('fc', kwargs.pop('facecolor',
                                        '#bfd1d4')), # Custom defaults
                          lw=kwargs.pop('lw', kwargs.pop('linewidth',
                                        '0.5')),
                          **kwargs)

Note that the linewidth is set to the string '0.5' rather than the float 0.5. gc.set_linewidth is then called with the string '0.5' as the argument, which triggers the error. If I replace '0.5' by 0.5, the example runs fine with the MacOSX backend.

Is there a reason why this needs to be a string here? I would think that in general gc.set_linewidth should only accept floats and ints.

-Michiel.




--- On Fri, 1/6/12, Mingkui Li <ken...@gm...> wrote:

From: Mingkui Li <ken...@gm...>
Subject: [Matplotlib-users] matplotlib 1.1 "TypeError: a float is required" problem
To: mat...@li...
Date: Friday, January 6, 2012, 10:54 AM

I just updated matplotlib to 1.1 and want try the new features
Sankey Diagrams
and
Animation
but when I try the api example code: sankey_demo_basics.py

I got the error messages as below:==============================================================================Traceback (most recent call last):  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/figure.py", line 884, in draw    func(*args)
  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py", line 55, in draw_wrapper    draw(artist, renderer, *args, **kwargs)  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/axes.py", line 1983, in draw
    a.draw(renderer)  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py", line 55, in draw_wrapper    draw(artist, renderer, *args, **kwargs)
  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/patches.py", line 385, in draw    gc.set_linewidth(lw)TypeError: a float is required
Traceback (most recent call last):  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py", line 55, in draw_wrapper    draw(artist, renderer, *args, **kwargs)
  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/figure.py", line 884, in draw    func(*args)  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/axes.py", line 1983, in draw    a.draw(renderer)
  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/artist.py", line 55, in draw_wrapper    draw(artist, renderer, *args, **kwargs)  File "/Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/patches.py", line 385, in draw
    gc.set_linewidth(lw)TypeError: a float is required==================================================================================
Then I looked into the file /Library/Frameworks/EPD64.framework/Versions/7.2/lib/python2.7/site-packages/matplotlib/patches.py
at the line 384 the code is: gc.set_linewidth(lw)I added  "lw = np.float(lw)" before "gc.set_linewidth(lw)", then the example code runs successfully.
Any help?

Thanks for any reply.
-- 
Mingkui Li



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Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex
infrastructure or vast IT resources to deliver seamless, secure access to
virtual desktops. With this all-in-one solution, easily deploy virtual 
desktops for less than the cost of PCs and save 60% on VDI infrastructure 
costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox
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_______________________________________________
Matplotlib-users mailing list
Mat...@li...
https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Hello group,

I am trying to align contour labels on my plot. Using the latest git clone
I was able to position the labels somewhat nicer than the default
positioning.
(Following from https://github.com/matplotlib/matplotlib/issues/613 )
However, it requires manual specification of right data coords to create
this plot and it is not easy to align them properly.
Is there a mechanism to position and align labels on a specified line? See
the linked image for better demonstration.

http://imageshack.us/photo/my-images/210/cimage.png/

Thanks

-- 
Gökhan