Re: [Matplotlib-users] automatically choose line markers/styles?

2008-02-20 Thread Gary Ruben
Just an idea: Maybe you could also auto cycle between dash types if only 
the colour and not the dash type is specified in a plot command. The 
gnuplot default would be one model, or the predefined patterns in 
CorelDraw or Inkscape etc. Personally I don't see this as a high 
priority though.

Gary R.


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Re: [Matplotlib-users] automatically choose line markers/styles?

2008-02-19 Thread Neal Becker
Alan G Isaac wrote:

 On Thu, 14 Feb 2008, Neal Becker apparently wrote:
 Can I get nice default line styles and markers,
 automatically set up with matching legend?  Automatically
 chosen?  I don't want to have to go through and manually
 choose each marker and line style.
 
 Well, you have to ask for a legend, but everything else
 default looks good to me.  What is an example where you do
 not like the default behavior?
 
 Are you trying to make a bunch of figures look alike?
 
IIUC, in order to have each line with distinct line style, I have to
explicitly set the line style.  I want pylab to just choose them, just as
it does for colors.


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Re: [Matplotlib-users] automatically choose line markers/styles?

2008-02-19 Thread Alan G Isaac
On Tue, 19 Feb 2008, Neal Becker apparently wrote:

 IIUC, in order to have each line with distinct line style, I have to 
 explicitly set the line style.  I want pylab to just choose them, just as 
 it does for colors. 

Well, pylab does choose: it varies color and not the dash 
pattern in order to have distinct lines.

I think what you are wanting is something like the 
following: have pylab/pyplot cycle automatically through 
a set of preset Line2D property combinations, when an axes
plots multiple lines.

I think the answer is: this is not available in the
form you want.  (Indeed, it is hard for me to imagine
agreement on nice choices for multiple properties.)

Of course you can do something like this::

from itertools import cycle

mystyles = ['r+-', 'b.--', 'go-.'] #etc
ax1styles = cycle( mystyles )

for x,y in data:
ax1.plot(x, y, ax1styles.next())

Cheers,
Alan Isaac





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Re: [Matplotlib-users] automatically choose line markers/styles?

2008-02-19 Thread John Hunter
On Feb 19, 2008 9:13 AM, Alan G Isaac [EMAIL PROTECTED] wrote:

 Of course you can do something like this::

 from itertools import cycle

 mystyles = ['r+-', 'b.--', 'go-.'] #etc
 ax1styles = cycle( mystyles )

You can also cycle through the list matplotlib uses

  import matplotlib.lines as lines

  # filled markers
  fmarkers = lines.Line2D.filled_markers

  # all markers
  markers = lines.Line2D.markers.keys()

but this is not ideal, since lines.Line2D.markers is a dictionary and
the keys will come back un-ordered.  Noone has every asked for
auto-marker cycling before, but it might be a good idea and wouldn't
be too hard to add.

JDH

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Re: [Matplotlib-users] automatically choose line markers/styles?

2008-02-15 Thread Alan G Isaac
On Thu, 14 Feb 2008, Neal Becker apparently wrote:
 Can I get nice default line styles and markers, 
 automatically set up with matching legend?  Automatically 
 chosen?  I don't want to have to go through and manually 
 choose each marker and line style. 

Well, you have to ask for a legend, but everything else 
default looks good to me.  What is an example where you do 
not like the default behavior?

Are you trying to make a bunch of figures look alike?

Cheers,
Alan Isaac




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[Matplotlib-users] automatically choose line markers/styles?

2008-02-14 Thread Neal Becker
Can matplotlib automatically choose line styles and/or markers for a group
of plots?


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Re: [Matplotlib-users] automatically choose line markers/styles?

2008-02-14 Thread Neal Becker
Alan G Isaac wrote:

 On Thu, 14 Feb 2008, Neal Becker apparently wrote:
 Can matplotlib automatically choose line styles and/or
 markers for a group of plots?
 
 http://matplotlib.sourceforge.net/matplotlibrc
 
 Although I prefer to pass in a dict of keyword arguments.
 
Not sure what you're telling me here.  I'm thinking:
I can get nice default grid with grid()
I can get nice default legend with legend()
Can I get nice default line styles and markers, automatically set up with
matching legend?  Automatically chosen?  I don't want to have to go through
and manually choose each marker and line style.


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