matplotlib-users

[Matplotlib-users] setting the default markerfacecolor

[Matt F. <ma...@nm...>]

Hi,
i am farily new to matplotlib so my question might be fairly basic. I would 
like to be able to set certain default values at the beginning of my script. 
The way i did this with the other values is via changing the value stored in 
rcparams. So something like:
import matplotlib.pyplot as mpl
mpl.rcParams['lines.markersize'] = 20

But i would like to set the markerfacecolor in such a way but it is not 
included in rcParams. I would really like to avoid setting it in each 
individual plot call. 

Is there a way to change the default at the start of the script?

thanks
matt

Re: [Matplotlib-users] setting the default markerfacecolor

[Paul I. <piv...@gm...>]

Matt Funk, on 2011-04-07 16:52,  wrote:
> Hi,
> i am farily new to matplotlib so my question might be fairly basic. I would 
> like to be able to set certain default values at the beginning of my script. 
> The way i did this with the other values is via changing the value stored in 
> rcparams. So something like:
> import matplotlib.pyplot as mpl
> mpl.rcParams['lines.markersize'] = 20
> 
> But i would like to set the markerfacecolor in such a way but it is not 
> included in rcParams. I would really like to avoid setting it in each 
> individual plot call. 
> 
> Is there a way to change the default at the start of the script?

Hi Matt,

this depends on how you're plotting. 

If you're just using plt.plot - it defers to cycling through the
rcParams['axes.color_cycle'] - so just set that to one value
before starting your plots..

old_color_cycle = rcParams['axes.color_cycle']
rcParams['axes.color_cycle'] = 'purple' # cue Gogol Bordello
plt.figure()
ax = plt.subplot(111)

ax.plot(range(10),'o', markersize=40)
ax.plot(np.random.rand(10),'o', markersize=40)
ax.plot(np.random.rand(10)*10,'o', markersize=40)

# restore color_cycle just for this axes
ax._get_lines.set_color_cycle(old_color_cycle)
ax.plot(range(20,30), range(10),'o', markersize=40)
ax.plot(range(20,30), np.random.rand(10),'o', markersize=40)
ax.plot(range(20,30), np.random.rand(10)*10,'o', markersize=40)

# restore old cycle for all new axes
rcParams['axes.color_cycle'] = old_color_cycle 
--

If, on the other hand, you're using scatter, there isn't
currently a way of doing the same, since scatter just uses 'b' as
the default parameter for color.

This should probably be changed to act the same way plot does,
but that isn't currently implemented. This would be a good first 
patch for a newcomer -- and would make matplotlib more consistent.

best,
-- 
Paul Ivanov
314 address only used for lists,  off-list direct email at:
http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7 

Re: [Matplotlib-users] setting the default markerfacecolor

[Matt F. <ma...@nm...>]

Hi Paul,

thanks for the response. Emmhh, i am not sure what's going on since what you 
are saying matches what's listed at 
http://matplotlib.sourceforge.net/users/customizing.html. The problem is that 
when i try it I get a key error, correspondingly, when i print rcParams i 
cannot find axes.color_cycle key:

So printing rcParams gives:
print mpl.rcParams
{'figure.subplot.right': 0.90000000000000002, 'mathtext.cal': 'cursive', 
'font.fantasy': ['Comic Sans MS', 'Chicago', 'Charcoal', 'ImpactWestern', 
'fantasy'], 'xtick.minor.pad': 4, 'tk.pythoninspect': False, 'image.aspect': 
'equal', 'font.cursive': ['Apple Chancery', 'Textile', 'Zapf Chancery', 
'Sand', 'cursive'], 'figure.subplot.hspace': 0.20000000000000001, 
'xtick.direction': 'out', 'axes.facecolor': 'w', 'mathtext.fontset': 'cm', 
'ytick.direction': 'out', 'svg.image_inline': True, 'lines.markersize': 10.0, 
'figure.dpi': 80, 'text.usetex': True, 'text.fontangle': 'normal', 
'patch.edgecolor': 'k', 'legend.labelspacing': 0.5, 'ps.useafm': False, 
'mathtext.bf': 'serif:bold', 'lines.solid_joinstyle': 'round', 
'font.monospace': ['Bitstream Vera Sans Mono', 'DejaVu Sans Mono', 'Andale 
Mono', 'Nimbus Mono L', 'Courier New', 'Courier', 'Fixed', 'Terminal', 
'monospace'], 'xtick.minor.size': 2, 'axes.formatter.limits': [-7, 7], 
'figure.subplot.wspace': 0.20000000000000001, 'savefig.edgecolor': 'w', 
'text.fontvariant': 'normal', 'image.cmap': 'jet', 'axes.edgecolor': 'k', 
'tk.window_focus': False, 'image.origin': 'upper', 'text.fontsize': 'medium', 
'font.serif': ['Bitstream Vera Serif', 'DejaVu Serif', 'New Century 
Schoolbook', 'Century Schoolbook L', 'Utopia', 'ITC Bookman', 'Bookman', 
'Nimbus Roman No9 L', 'Times New Roman', 'Times', 'Palatino', 'Charter', 
'serif'], 'savefig.facecolor': 'w', 'maskedarray': 'obsolete', 
'ytick.minor.size': 2, 'numerix': 'obsolete', 'font.stretch': 'normal', 
'text.dvipnghack': None, 'ytick.color': 'k', 'lines.linestyle': '-', 
'xtick.color': 'k', 'xtick.major.pad': 4, 'text.fontweight': 'normal', 
'patch.facecolor': 'b', 'figure.figsize': [8.0, 6.0], 'axes.linewidth': 1.0, 
'legend.handletextpad': 0.80000000000000004, 'mathtext.fallback_to_cm': True, 
'lines.linewidth': 1.0, 'savefig.dpi': 100, 'verbose.fileo': 'sys.stdout', 
'svg.image_noscale': False, 'docstring.hardcopy': False, 'font.size': 24.0, 
'ps.fonttype': 3, 'path.simplify': True, 'polaraxes.grid': True, 'toolbar': 
'toolbar2', 'pdf.compression': 6, 'grid.linewidth': 0.5, 'figure.autolayout': 
False, 'figure.facecolor': '0.75', 'ps.usedistiller': False, 'legend.isaxes': 
True, 'figure.edgecolor': 'w', 'mathtext.tt': 'monospace', 
'contour.negative_linestyle': 'dashed', 'image.interpolation': 'bilinear', 
'lines.markeredgewidth': 1.5, 'axes3d.grid': True, 'lines.marker': 'None', 
'legend.shadow': False, 'axes.titlesize': 24.0, 'backend': 'TkAgg', 
'xtick.major.size': 4, 'legend.fontsize': 24.0, 'lines.solid_capstyle': 
'projecting', 'mathtext.it': 'serif:italic', 'font.variant': 'normal', 
'xtick.labelsize': 'medium', 'axes.unicode_minus': True, 'ps.distiller.res': 
6000, 'pdf.fonttype': 3, 'patch.linewidth': 1.0, 'pdf.inheritcolor': False, 
'lines.dash_capstyle': 'butt', 'lines.color': 'b', 'text.latex.preview': 
False, 'figure.subplot.top': 0.90000000000000002, 'pdf.use14corefonts': False, 
'legend.markerscale': 1.0, 'patch.antialiased': True, 'font.style': 'normal', 
'backend_fallback': True, 'legend.fancybox': True, 'grid.linestyle': ':', 
'axes.labelcolor': 'k', 'text.color': 'k', 'mathtext.rm': 'serif', 
'legend.loc': 'upper right', 'interactive': False, 'cairo.format': 'png', 
'savefig.orientation': 'portrait', 'axes.axisbelow': False, 'ytick.major.size': 
4, 'axes.grid': False, 'plugins.directory': '.matplotlib_plugins', 
'grid.color': 'k', 'timezone': 'UTC', 'ytick.major.pad': 4, 
'legend.borderpad': 0.40000000000000002, 'lines.dash_joinstyle': 'round', 
'datapath': '/usr/share/matplotlib/mpl-data', 'lines.antialiased': True, 
'text.latex.unicode': False, 'image.lut': 256, 'units': False, 
'figure.subplot.bottom': 0.10000000000000001, 'text.latex.preamble': [''], 
'legend.numpoints': 2, 'legend.handlelength': 2.0, 'font.sans-serif': 
['Arial'], 'font.family': 'sans-serif', 'axes.labelsize': 24.0, 
'ytick.minor.pad': 4, 'legend.borderaxespad': 0.5, 'mathtext.sf': 'sans\\-
serif', 'axes.hold': True, 'verbose.level': 'silent', 'mathtext.default': 
'it', 'figure.subplot.left': 0.125, 'legend.columnspacing': 2.0, 
'text.fontstyle': 'normal', 'font.weight': 'normal', 'image.resample': False, 
'agg.path.chunksize': 0, 'path.simplify_threshold': 0.1111111111111111, 
'ytick.labelsize': 'medium', 'ps.papersize': 'letter', 'svg.embed_char_paths': 
True}

(sorry for the long post).
Anything obvious that i am doing wrong? I am using:
Python 2.6.6
mpl.__version__ = 0.99.3

thanks
matt


On Thursday, April 07, 2011, Paul Ivanov wrote:
> Matt Funk, on 2011-04-07 16:52,  wrote:
> > Hi,
> > i am farily new to matplotlib so my question might be fairly basic. I
> > would like to be able to set certain default values at the beginning of
> > my script. The way i did this with the other values is via changing the
> > value stored in rcparams. So something like:
> > import matplotlib.pyplot as mpl
> > mpl.rcParams['lines.markersize'] = 20
> > 
> > But i would like to set the markerfacecolor in such a way but it is not
> > included in rcParams. I would really like to avoid setting it in each
> > individual plot call.
> > 
> > Is there a way to change the default at the start of the script?
> 
> Hi Matt,
> 
> this depends on how you're plotting.
> 
> If you're just using plt.plot - it defers to cycling through the
> rcParams['axes.color_cycle'] - so just set that to one value
> before starting your plots..
> 
> old_color_cycle = rcParams['axes.color_cycle']
> rcParams['axes.color_cycle'] = 'purple' # cue Gogol Bordello
> plt.figure()
> ax = plt.subplot(111)
> 
> ax.plot(range(10),'o', markersize=40)
> ax.plot(np.random.rand(10),'o', markersize=40)
> ax.plot(np.random.rand(10)*10,'o', markersize=40)
> 
> # restore color_cycle just for this axes
> ax._get_lines.set_color_cycle(old_color_cycle)
> ax.plot(range(20,30), range(10),'o', markersize=40)
> ax.plot(range(20,30), np.random.rand(10),'o', markersize=40)
> ax.plot(range(20,30), np.random.rand(10)*10,'o', markersize=40)
> 
> # restore old cycle for all new axes
> rcParams['axes.color_cycle'] = old_color_cycle
> --
> 
> If, on the other hand, you're using scatter, there isn't
> currently a way of doing the same, since scatter just uses 'b' as
> the default parameter for color.
> 
> This should probably be changed to act the same way plot does,
> but that isn't currently implemented. This would be a good first
> patch for a newcomer -- and would make matplotlib more consistent.
> 
> best,

Re: [Matplotlib-users] setting the default markerfacecolor

[Paul I. <piv...@gm...>]

Hi Matt,

Matt Funk, on 2011-04-08 14:56,  wrote:
> mpl.__version__ = 0.99.3

ah - this would do it - that axis parameter was added by Eric
Firing on 2010-01-03 - but it didn't go into the 0.99 series - it
went straight to trunk - so you'll have to get at least
matplotlib 1.0 to gain that functionality.

best,
-- 
Paul Ivanov
314 address only used for lists,  off-list direct email at:
http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7 

Re: [Matplotlib-users] setting the default markerfacecolor

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

On 04/08/2011 10:56 AM, Matt Funk wrote:
> Hi Paul,
>
> thanks for the response. Emmhh, i am not sure what's going on since what you
> are saying matches what's listed at
> http://matplotlib.sourceforge.net/users/customizing.html. The problem is that
> when i try it I get a key error, correspondingly, when i print rcParams i
> cannot find axes.color_cycle key:

It is quite new, so your mpl version is too old to have it.

Eric

>
> So printing rcParams gives:
> print mpl.rcParams
> {'figure.subplot.right': 0.90000000000000002, 'mathtext.cal': 'cursive',
> 'font.fantasy': ['Comic Sans MS', 'Chicago', 'Charcoal', 'ImpactWestern',
> 'fantasy'], 'xtick.minor.pad': 4, 'tk.pythoninspect': False, 'image.aspect':
> 'equal', 'font.cursive': ['Apple Chancery', 'Textile', 'Zapf Chancery',
> 'Sand', 'cursive'], 'figure.subplot.hspace': 0.20000000000000001,
> 'xtick.direction': 'out', 'axes.facecolor': 'w', 'mathtext.fontset': 'cm',
> 'ytick.direction': 'out', 'svg.image_inline': True, 'lines.markersize': 10.0,
> 'figure.dpi': 80, 'text.usetex': True, 'text.fontangle': 'normal',
> 'patch.edgecolor': 'k', 'legend.labelspacing': 0.5, 'ps.useafm': False,
> 'mathtext.bf': 'serif:bold', 'lines.solid_joinstyle': 'round',
> 'font.monospace': ['Bitstream Vera Sans Mono', 'DejaVu Sans Mono', 'Andale
> Mono', 'Nimbus Mono L', 'Courier New', 'Courier', 'Fixed', 'Terminal',
> 'monospace'], 'xtick.minor.size': 2, 'axes.formatter.limits': [-7, 7],
> 'figure.subplot.wspace': 0.20000000000000001, 'savefig.edgecolor': 'w',
> 'text.fontvariant': 'normal', 'image.cmap': 'jet', 'axes.edgecolor': 'k',
> 'tk.window_focus': False, 'image.origin': 'upper', 'text.fontsize': 'medium',
> 'font.serif': ['Bitstream Vera Serif', 'DejaVu Serif', 'New Century
> Schoolbook', 'Century Schoolbook L', 'Utopia', 'ITC Bookman', 'Bookman',
> 'Nimbus Roman No9 L', 'Times New Roman', 'Times', 'Palatino', 'Charter',
> 'serif'], 'savefig.facecolor': 'w', 'maskedarray': 'obsolete',
> 'ytick.minor.size': 2, 'numerix': 'obsolete', 'font.stretch': 'normal',
> 'text.dvipnghack': None, 'ytick.color': 'k', 'lines.linestyle': '-',
> 'xtick.color': 'k', 'xtick.major.pad': 4, 'text.fontweight': 'normal',
> 'patch.facecolor': 'b', 'figure.figsize': [8.0, 6.0], 'axes.linewidth': 1.0,
> 'legend.handletextpad': 0.80000000000000004, 'mathtext.fallback_to_cm': True,
> 'lines.linewidth': 1.0, 'savefig.dpi': 100, 'verbose.fileo': 'sys.stdout',
> 'svg.image_noscale': False, 'docstring.hardcopy': False, 'font.size': 24.0,
> 'ps.fonttype': 3, 'path.simplify': True, 'polaraxes.grid': True, 'toolbar':
> 'toolbar2', 'pdf.compression': 6, 'grid.linewidth': 0.5, 'figure.autolayout':
> False, 'figure.facecolor': '0.75', 'ps.usedistiller': False, 'legend.isaxes':
> True, 'figure.edgecolor': 'w', 'mathtext.tt': 'monospace',
> 'contour.negative_linestyle': 'dashed', 'image.interpolation': 'bilinear',
> 'lines.markeredgewidth': 1.5, 'axes3d.grid': True, 'lines.marker': 'None',
> 'legend.shadow': False, 'axes.titlesize': 24.0, 'backend': 'TkAgg',
> 'xtick.major.size': 4, 'legend.fontsize': 24.0, 'lines.solid_capstyle':
> 'projecting', 'mathtext.it': 'serif:italic', 'font.variant': 'normal',
> 'xtick.labelsize': 'medium', 'axes.unicode_minus': True, 'ps.distiller.res':
> 6000, 'pdf.fonttype': 3, 'patch.linewidth': 1.0, 'pdf.inheritcolor': False,
> 'lines.dash_capstyle': 'butt', 'lines.color': 'b', 'text.latex.preview':
> False, 'figure.subplot.top': 0.90000000000000002, 'pdf.use14corefonts': False,
> 'legend.markerscale': 1.0, 'patch.antialiased': True, 'font.style': 'normal',
> 'backend_fallback': True, 'legend.fancybox': True, 'grid.linestyle': ':',
> 'axes.labelcolor': 'k', 'text.color': 'k', 'mathtext.rm': 'serif',
> 'legend.loc': 'upper right', 'interactive': False, 'cairo.format': 'png',
> 'savefig.orientation': 'portrait', 'axes.axisbelow': False, 'ytick.major.size':
> 4, 'axes.grid': False, 'plugins.directory': '.matplotlib_plugins',
> 'grid.color': 'k', 'timezone': 'UTC', 'ytick.major.pad': 4,
> 'legend.borderpad': 0.40000000000000002, 'lines.dash_joinstyle': 'round',
> 'datapath': '/usr/share/matplotlib/mpl-data', 'lines.antialiased': True,
> 'text.latex.unicode': False, 'image.lut': 256, 'units': False,
> 'figure.subplot.bottom': 0.10000000000000001, 'text.latex.preamble': [''],
> 'legend.numpoints': 2, 'legend.handlelength': 2.0, 'font.sans-serif':
> ['Arial'], 'font.family': 'sans-serif', 'axes.labelsize': 24.0,
> 'ytick.minor.pad': 4, 'legend.borderaxespad': 0.5, 'mathtext.sf': 'sans\\-
> serif', 'axes.hold': True, 'verbose.level': 'silent', 'mathtext.default':
> 'it', 'figure.subplot.left': 0.125, 'legend.columnspacing': 2.0,
> 'text.fontstyle': 'normal', 'font.weight': 'normal', 'image.resample': False,
> 'agg.path.chunksize': 0, 'path.simplify_threshold': 0.1111111111111111,
> 'ytick.labelsize': 'medium', 'ps.papersize': 'letter', 'svg.embed_char_paths':
> True}
>
> (sorry for the long post).
> Anything obvious that i am doing wrong? I am using:
> Python 2.6.6
> mpl.__version__ = 0.99.3
>
> thanks
> matt
>
>
> On Thursday, April 07, 2011, Paul Ivanov wrote:
>> Matt Funk, on 2011-04-07 16:52,  wrote:
>>> Hi,
>>> i am farily new to matplotlib so my question might be fairly basic. I
>>> would like to be able to set certain default values at the beginning of
>>> my script. The way i did this with the other values is via changing the
>>> value stored in rcparams. So something like:
>>> import matplotlib.pyplot as mpl
>>> mpl.rcParams['lines.markersize'] = 20
>>>
>>> But i would like to set the markerfacecolor in such a way but it is not
>>> included in rcParams. I would really like to avoid setting it in each
>>> individual plot call.
>>>
>>> Is there a way to change the default at the start of the script?
>>
>> Hi Matt,
>>
>> this depends on how you're plotting.
>>
>> If you're just using plt.plot - it defers to cycling through the
>> rcParams['axes.color_cycle'] - so just set that to one value
>> before starting your plots..
>>
>> old_color_cycle = rcParams['axes.color_cycle']
>> rcParams['axes.color_cycle'] = 'purple' # cue Gogol Bordello
>> plt.figure()
>> ax = plt.subplot(111)
>>
>> ax.plot(range(10),'o', markersize=40)
>> ax.plot(np.random.rand(10),'o', markersize=40)
>> ax.plot(np.random.rand(10)*10,'o', markersize=40)
>>
>> # restore color_cycle just for this axes
>> ax._get_lines.set_color_cycle(old_color_cycle)
>> ax.plot(range(20,30), range(10),'o', markersize=40)
>> ax.plot(range(20,30), np.random.rand(10),'o', markersize=40)
>> ax.plot(range(20,30), np.random.rand(10)*10,'o', markersize=40)
>>
>> # restore old cycle for all new axes
>> rcParams['axes.color_cycle'] = old_color_cycle
>> --
>>
>> If, on the other hand, you're using scatter, there isn't
>> currently a way of doing the same, since scatter just uses 'b' as
>> the default parameter for color.
>>
>> This should probably be changed to act the same way plot does,
>> but that isn't currently implemented. This would be a good first
>> patch for a newcomer -- and would make matplotlib more consistent.
>>
>> best,
>
>
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