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Sorry for my misleading words - I did not correctly recall my own work 
from back then...

In fact, the code as it is does not change the mec automatically when 
the mfc of a filled_marker is set to "None" but leaves it black. I did 
consider adding an automation to change but decided against it. The 
logic would have become too complex and hard to predict.

What you can do is setting the mec afterwards using get_color on the 
plot like

    pl, = plot(x,y,"-o",mfc="None")
    pl.set_mec(pl.get_color())

Hope that helps?

Greetings,
Norbert




C M wrote:
>
>
>
> >>> mfc="None" does the job. mec should then default to the line color.
>
> >> Hmm, I just tried that and it doesn't default to the line color, it
> >> instead makes a black edge color for the marker.  I am still using
> >> version 0.90.1; is this a newer feature in the latest release? (yes, I
> >> will upgrade, just been pokey about it since I was working on other
> >> issues).
>
> > I don't remember when I worked on this issue, but it may well be 
> that it was after
> > 0.90.1
>
> Well, I just upgraded matplotlib to the latest, 0.98.5.2, and it is 
> still not making the colors of the marker edges match the lines.  
> They're still black, despite the various lines being red, blue, green...
>
> This is with the wxAgg backend.  The line in my code is:
>
> line = self.subplot.plot_date(dates,values,'-o',picker=5, lw=2,
>          markersize=9, mfc="None")
>        
> (Also, since upgrading, now I have a number of things that have 
> changed/are not working in my app, will have to change, but that's 
> probably for the better since I know there are some nice new features 
> in mpl)
>
> Any ideas?
>
> Thanks,
> Che
>
> >
> > C M wrote:
> >>
> >> Sorry this is a basic question but I can't figure out where
> >> in the docs nor archives I could find this.
> >>
> >> Is there a built in method for having unfilled markers?
> >> (ones that match the line color).
> >>
> >> I could set mfc (marker face color) to white and
> >> mec (marker edge color) to the color of my line, but
> >> what if I don't know the color (because it is generated
> >> through the mpl color cycler)?
> >>
> >> Thanks.
> >>
> >>
> >> 
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> >
> >
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On Sun, Jan 25, 2009 at 3:59 PM, C Lewis <ch...@na...> wrote:
> Tiny case appended.
>
> On my system (OS X), csv2rec() of the first file is fine, csv2rec() of the
> second fails with the mentioned error; they only differ in newline
> characters. Inconveniently, the one that fails seems to be Excel's default
> export.

OK, I can reproduce the problem and the solution is easy.  Open the
file in universal mode and pass the file handle to csv2rec::

  fh= file('myfile.csv', 'rU')
  r = csv2rec(fh)
  fh.close()

Here is an example ipython session:

In [2]: import matplotlib.mlab

In [3]: r = matplotlib.mlab.csv2rec('tr
triangleplot_demo2.csv  try

In [3]: r = matplotlib.mlab.csv2rec('triangleplot_demo2.csv')
---------------------------------------------------------------------------
Error                                     Traceback (most recent call last)

/Users/jdhunter/Desktop/<ipython console> in <module>()

/Users/jdhunter/dev/lib/python2.5/site-packages/matplotlib/mlab.pyc in
csv2rec(fname, comments, skiprows, checkrows, delimiter, converterd,
names, missing, missingd, use_mrecords)
   2513
   2514     if needheader:
-> 2515         for row in reader:
   2516             #print 'csv2rec', row
   2517             if len(row) and row[0].startswith(comments):

Error: new-line character seen in unquoted field - do you need to open
the file in universal-newline mode?

In [4]: fh = file('triangleplot_demo2.csv', 'rU')

In [5]: r = matplotlib.mlab.csv2rec(fh)

In [6]: fh.close()

In [7]: print r.dtype
[('sand', '<i4'), ('silt', '<i4'), ('clay', '<i4'), ('om', '<i4'),
('porosity', '<i4'), ('site', '|S3')]

Tiny case appended.

On my system (OS X), csv2rec() of the first file is fine, csv2rec() of  
the second fails with the mentioned error; they only differ in newline  
characters. Inconveniently, the one that fails seems to be Excel's  
default export.

>>> mfc="None" does the job. mec should then default to the line color.

>> Hmm, I just tried that and it doesn't default to the line color, it
>> instead makes a black edge color for the marker.  I am still using
>> version 0.90.1; is this a newer feature in the latest release? (yes, I
>> will upgrade, just been pokey about it since I was working on other
>> issues).

> I don't remember when I worked on this issue, but it may well be that it
was after
> 0.90.1

Well, I just upgraded matplotlib to the latest, 0.98.5.2, and it is still
not making the colors of the marker edges match the lines.  They're still
black, despite the various lines being red, blue, green...

This is with the wxAgg backend.  The line in my code is:

line = self.subplot.plot_date(dates,values,'-o',picker=5, lw=2,
         markersize=9, mfc="None")

(Also, since upgrading, now I have a number of things that have changed/are
not working in my app, will have to change, but that's probably for the
better since I know there are some nice new features in mpl)

Any ideas?

Thanks,
Che

>
> C M wrote:
>>
>> Sorry this is a basic question but I can't figure out where
>> in the docs nor archives I could find this.
>>
>> Is there a built in method for having unfilled markers?
>> (ones that match the line color).
>>
>> I could set mfc (marker face color) to white and
>> mec (marker edge color) to the color of my line, but
>> what if I don't know the color (because it is generated
>> through the mpl color cycler)?
>>
>> Thanks.
>>
>>
>>
------------------------------------------------------------------------------
>> This SF.net email is sponsored by:
>> SourcForge Community
>> SourceForge wants to tell your story.
>> http://p.sf.net/sfu/sf-spreadtheword
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>>
>
>

On Sun, Jan 25, 2009 at 3:23 PM, C Lewis <ch...@na...> wrote:
> In matplotlib.mlab.csv2rec in 0.91.2 (*)
>
>        headers = reader.next()
>
> fails with "Error: new-line character seen in unquoted field - do you
> need to open the file in universal-newline mode?" Which sounds like a
> good idea, but I can't figure out how to specify that in/with/before
> calling csv2rec.
>

Perhaps you can post the file so we can take a look?  FYI, you can
pass a file handle in to csv2rec, so if you need to open the file in
some special mode, do so and pass csv2rec the file handle rather than
file name.

JDH

In matplotlib.mlab.csv2rec in 0.91.2 (*)

	headers = reader.next()

fails with "Error: new-line character seen in unquoted field - do you  
need to open the file in universal-newline mode?" Which sounds like a  
good idea, but I can't figure out how to specify that in/with/before  
calling csv2rec.

(In the short term, fixing the new-lines works, but I'd like to share  
the code.)

(*) ... upgrading even to the current Enthought dist stops my main  
project from running, and I was hoping not to have to work this out  
before my next deadline. Oy.


Chloe Lewis
Division of Ecosystem Sciences, ESPM
University of California, Berkeley

mfc="None" does the job. mec should then default to the line color.


C M wrote:
> Sorry this is a basic question but I can't figure out where
> in the docs nor archives I could find this.
>
> Is there a built in method for having unfilled markers?
> (ones that match the line color).
>
> I could set mfc (marker face color) to white and
> mec (marker edge color) to the color of my line, but
> what if I don't know the color (because it is generated
> through the mpl color cycler)?
>
> Thanks.
>
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by:
> SourcForge Community
> SourceForge wants to tell your story.
> http://p.sf.net/sfu/sf-spreadtheword
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>   

Sorry this is a basic question but I can't figure out where
in the docs nor archives I could find this.

Is there a built in method for having unfilled markers?
(ones that match the line color).

I could set mfc (marker face color) to white and
mec (marker edge color) to the color of my line, but
what if I don't know the color (because it is generated
through the mpl color cycler)?

Thanks.

I have been trying to figure out how to open up multiple plots from a
traits program, without much luck. I tried threads, no joy. Is there a
simple way to get multiple plots to come up? Would it work to fork off
new processes for each plot? I haven't done that in python before, just
perl, so before I dig too deeply into it, I thought I'd ask around.

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