[Matplotlib-users] Improve the error message or introduce support for colors as RGS tuples
Hi,
I am trying to improve my code where I cannot find out why matplotlib-1.1.0
does not
support colors specified as RG tuples. Here is an example.
import numpy as np
import matplotlib.pyplot as plt
_nums = [160.0, 160.0, 160.0, 95.0, 160.0, 160.0]
_colors = [(0.5019607843137255, 0.0, 0.5019607843137255), (0.5019607843137255,
0.0, 0.5019607843137255), (0.5019607843137255, 0.0, 0.5019607843137255),
(0.5019607843137255, 0.0, 0.5019607843137255), (0.5019607843137255, 0.0,
0.5019607843137255), (0.5019607843137255, 0.0, 0.5019607843137255)]
_legends = ['foo', 'foo', 'foo', 'blah', 'foo', 'foo']
plt.hist(_nums, histtype='bar', align='mid', color=_colors, log=False,
label=_legends)
plt.show()
The above code gives me:
File "/usr/lib64/python2.7/site-packages/matplotlib/pyplot.py", line 2332, in
hist
ret = ax.hist(x, bins, range, normed, weights, cumulative, bottom,
histtype, align, orientation, rwidth, log, color, label, **kwargs)
File "/usr/lib64/python2.7/site-packages/matplotlib/axes.py", line 7598, in
hist
raise ValueError("color kwarg must have one color per dataset")
ValueError: color kwarg must have one color per dataset
Mainly, I am suggesting the error message to be improved and to write out how
many
items were in data, color and legend iterables passed to the function. That
would help
in some cases albeit not with this example. That needs some other fix. ;)
I would like that one can also pass in a list of HTML-like colors, e.g.
'F0F8FF' or 0xF0F8FF
would be valid.
Thanks for your comments,
Martin
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Re: [Matplotlib-users] Improve the error message or introduce support for colors as RGS tuples
Martin Mokrejs wrote:
> Hi,
> I am trying to improve my code where I cannot find out why matplotlib-1.1.0
> does not
> support colors specified as RG tuples. Here is an example.
>
>
>
> import numpy as np
> import matplotlib.pyplot as plt
>
> _nums = [160.0, 160.0, 160.0, 95.0, 160.0, 160.0]
Grr. This was the trick:
_nums = [[160.0], [160.0], [160.0], [95.0], [160.0], [160.0]]
What a wasteful list creation. :(
> _colors = [(0.5019607843137255, 0.0, 0.5019607843137255),
> (0.5019607843137255, 0.0, 0.5019607843137255), (0.5019607843137255, 0.0,
> 0.5019607843137255), (0.5019607843137255, 0.0, 0.5019607843137255),
> (0.5019607843137255, 0.0, 0.5019607843137255), (0.5019607843137255, 0.0,
> 0.5019607843137255)]
> _legends = ['foo', 'foo', 'foo', 'blah', 'foo', 'foo']
>
> plt.hist(_nums, histtype='bar', align='mid', color=_colors, log=False,
> label=_legends)
>
> plt.show()
>
>
> The above code gives me:
>
> File "/usr/lib64/python2.7/site-packages/matplotlib/pyplot.py", line 2332,
> in hist
> ret = ax.hist(x, bins, range, normed, weights, cumulative, bottom,
> histtype, align, orientation, rwidth, log, color, label, **kwargs)
> File "/usr/lib64/python2.7/site-packages/matplotlib/axes.py", line 7598, in
> hist
> raise ValueError("color kwarg must have one color per dataset")
> ValueError: color kwarg must have one color per dataset
>
>
> Mainly, I am suggesting the error message to be improved and to write out how
> many
> items were in data, color and legend iterables passed to the function. That
> would help
Would it tells me my problem is not with color but with data points life would
be much easier. ;)
> in some cases albeit not with this example. That needs some other fix. ;)
>
> I would like that one can also pass in a list of HTML-like colors, e.g.
> 'F0F8FF' or 0xF0F8FF
> would be valid.
Sorry, meant also '#F0F8FF', but now I have verified that they do work already:
_colors = ['b', 'b', 'b', 'r', 'b', 'b']
_colors = ['#C0C0C0', '#C0C0C0', '#C0C0C0', '#80', '#C0C0C0', '#C0C0C0']
_colors = [(0.5019607843137255, 0.0, 0.5019607843137255), (0.5019607843137255,
0.0, 0.5019607843137255), (0.5019607843137255, 0.0, 0.5019607843137255),
(0.5019607843137255, 0.0, 0.5019607843137255), (0.5019607843137255, 0.0,
0.5019607843137255), (0.5019607843137255, 0.0, 0.5019607843137255)]
So this was all about *data* points to be wrapped in iterables. :((
Martin
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Re: [Matplotlib-users] Looking for additional help about moving a legend
On Fri, Apr 13, 2012 at 2:21 AM, Jonathan Bruck wrote:
> Thanks for a response, but unfortunately it doesn't seem to work. I have
> some sample code on pastebin http://pastebin.com/W6JmbCsz in case the
> following does not email out well
>
> # -*- coding: utf-8 -*-
> """
> Created on Thu Apr 12 11:16:03 2012
>
> Using the current stable version of pythonxy on Windows 7 32bit
> Author: Jonathan
>
>
> Notice how the figure box is not placed correctly, effectively missing the
> legend entirely
> """
>
> import matplotlib.pyplot as plt
> import numpy as np
>
> x = np.arange(-2*np.pi, 2*np.pi, 0.1)
> fig = plt.figure(1, figsize=(8,6))
> ax = fig.add_subplot(111)
> ax.plot(x, np.sin(x), label='Sine')
> ax.plot(x, np.cos(x), label='Cosine')
> ax.plot(x, np.arctan(x), label='Inverse tan')
> handles, labels = ax.get_legend_handles_labels()
> lgd = ax.legend(handles, labels, loc=9, bbox_to_anchor=(0.5,-0.1))
> ax.grid('on')
> #fig.tight_layout()
> fig.savefig('samplefigure', bbox_extra_artists=(lgd,), bbox='tight')
>
>
>
I apologize, it was bbox_inches='tight', not bbox='tight'. Because savefig
has to be able to take arbitrary kwargs that get passed down to the
backends, it does not check for incorrect kwargs.
Ben Root
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[Matplotlib-users] Matplotlib and Cpp
Dear all, I was wondering if it is possible to use matplotlib from C++ directly and I have found an example on how to do this on StackOverflow: http://stackoverflow.com/questions/2509156/anyone-knows-a-matplotlib-equivalent-in-c-or-c However, my question is about piping. Where could I find any tutorials on how to pipe data directly to matplotlib so that I would not need to right it to a file and then read it? Also, does matplotlib benefit from usage of cython and if it does, are there any things I should know before just trying to compile a matplotlib script with cython? All best, Ignas A. -- For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] corrupt pdf of histogram
Jouni K. Seppänen writes: > I have a suggested fix for this at > https://github.com/matplotlib/matplotlib/pull/817 This is now merged into the v1.1.x branch, from which the fix should propagate to the upcoming release. -- Jouni K. Seppänen http://www.iki.fi/jks -- For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Focus in OSX
Confirmed, when I installed my python as a framework, (With homebrew, `brew install python --framework`) the focus now works properly. -E On Thu, Apr 12, 2012 at 7:57 PM, Chris Laumann wrote: > Actually I don't know about the apple supplied python, but I believe > enthoughts python is installed as a framework. > > C > > > > On Apr 12, 2012, at 8:53 PM, Michiel de Hoon wrote: > > > --- On Wed, 4/11/12, Zachary Pincus wrote: > >> Hopefully someone who knows more about the OS X backend can > >> comment here... > > > > It sounds like the Python you are using is not installed as a framework. > Using the --enable-framework flag when compiling Python. > > > > -Michiel. > > > > > -- > > For Developers, A Lot Can Happen In A Second. > > Boundary is the first to Know...and Tell You. > > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! > > http://p.sf.net/sfu/Boundary-d2dvs2 > > ___ > > Matplotlib-users mailing list > > Matplotlib-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > > -- > For Developers, A Lot Can Happen In A Second. > Boundary is the first to Know...and Tell You. > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! > http://p.sf.net/sfu/Boundary-d2dvs2 > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Inconsistent Saving of Figures With Hatching
Greetings, I've noticed an issue when trying to create hatched plots. When I try to create hatched plots with dashed lines, I get inconsistent behavior between matplotlib.pyplot.show() and matplotlib.pyplot.savefig(). The show() command will correctly (in terms of what I want) display the hatched area as a dashed line, whereas savefig() will save an image with the edge contour dashed, but the hatching as solid lines. A self contained example script can be found here: https://gist.github.com/2378109 For those who just want to see figures as to what I'm talking about they can be found at the following. What I want: http://www.patricktmarsh.com/tmp/correct_example.png What I get: http://www.patricktmarsh.com/tmp/incorrect_example.png What I want: http://www.patricktmarsh.com/tmp/correct_web.png What I get: http://www.patricktmarsh.com/wp-content/gallery/2012images/20060406_day2_color.png Thanks for any help! Patrick --- Patrick Marsh Ph.D. Candidate / Liaison to the HWT School of Meteorology / University of Oklahoma Cooperative Institute for Mesoscale Meteorological Studies National Severe Storms Laboratory http://www.patricktmarsh.com -- For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Focus in OSX
OK, that is good to know. The Apple-supplied python is not installed as a framework; I don't know for the Enthought distribution. Anyway, the MacOSX backend checks whether your Python is installed as a framework, and it issues a warning if it is not installed as a framework. For your non-framework python, was this warning issued? Best, -Michiel. --- On Fri, 4/13/12, Elliot Saba wrote: From: Elliot Saba Subject: Re: [Matplotlib-users] Focus in OSX To: "Chris Laumann" Cc: "Michiel de Hoon" , "matplotlib-users@lists.sourceforge.net" Date: Friday, April 13, 2012, 4:57 PM Confirmed, when I installed my python as a framework, (With homebrew, `brew install python --framework`) the focus now works properly.-E On Thu, Apr 12, 2012 at 7:57 PM, Chris Laumann wrote: Actually I don't know about the apple supplied python, but I believe enthoughts python is installed as a framework. C On Apr 12, 2012, at 8:53 PM, Michiel de Hoon wrote: > --- On Wed, 4/11/12, Zachary Pincus wrote: >> Hopefully someone who knows more about the OS X backend can >> comment here... > > It sounds like the Python you are using is not installed as a framework. > Using the --enable-framework flag when compiling Python. > > -Michiel. > > -- > For Developers, A Lot Can Happen In A Second. > Boundary is the first to Know...and Tell You. > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! > http://p.sf.net/sfu/Boundary-d2dvs2 > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
