matplotlib-devel Mailing List for matplotlib

>>>>> "Vinj" == Vinj Vinj <vin...@ya...> writes:

    Vinj> The following code (is a simple modification of
    Vinj> finance_demo.py) produces a stock chart. SOme of the lines
    Vinj> are thicker than the others. All the lines should have the
    Vinj> same width.

This is a little bug that crops up frequently because of how agg
handles subpixel rendering.  I added a little hack to the line
collection code to "snap to pixel center" for len(2) lines.  Should
fix your problem.

Use CVS revision

Checking in src/_backend_agg.cpp;
/cvsroot/matplotlib/matplotlib/src/_backend_agg.cpp,v  <--  _backend_agg.cpp
new revision: 1.89; previous revision: 1.88

or later.

JDH

I may be coming in late to this, but I would suggest:

1. Make sure you are up to date with cvs
2. cvs diff -c -3 > my-mpl-changes.diff

I did the tkagg animation and I would be willing to test your wx changes and 
commit barring any problems.

- Charlie

Ken McIvor wrote:
> On Aug 29, 2005, at 12:03 PM, Arnd Baecker wrote:
> 
>> Also I think according to xvsdiff it
>> should not be __init__.py in matplotlib but the one
>> matplotlib/lib/matplotlib/ which should be patched.
>> So I must be doing something wrong here.
> 
> 
> I doubt you're doing anything wrong here.  I probably don't know how to 
> generate correct CVS diffs for patching, and didn't think to validate my 
> patch by applying it myself.
> 
> Any advice on submitting diffs against CVS, mailing list?
> 
> Ken
> 
> 
> 
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On Aug 29, 2005, at 12:03 PM, Arnd Baecker wrote:
> Also I think according to xvsdiff it
> should not be __init__.py in matplotlib but the one
> matplotlib/lib/matplotlib/ which should be patched.
> So I must be doing something wrong here.

I doubt you're doing anything wrong here.  I probably don't know how to 
generate correct CVS diffs for patching, and didn't think to validate 
my patch by applying it myself.

Any advice on submitting diffs against CVS, mailing list?

Ken

The following code (is a simple modification of
finance_demo.py) produces a stock chart. SOme of the
lines are thicker than the others. All the lines
should have the same width.

VJ



import datetime
from pylab import *
from matplotlib.finance import
quotes_historical_yahoo, plot_day_summary2

import time


axesBG = '#f6f6f6'
figBG = 'w'
date1 = datetime.date( 2002, 2, 1)
date2 = datetime.date( 2004, 12, 12 )

quotes = quotes_historical_yahoo(
    'INTC', date1, date2)

quotetime, open, close, high, low, volume =
zip(*quotes)
numPriceBars = 261


ax = subplot(111)
plot_day_summary2(ax,
open[0:260],close[0:260],high[0:260],low[0:260])
set(ax.get_xticklabels(), 'rotation', 45,
'horizontalalignment', 'right', fontsize=7)

show()

>>Not sure why you are having trouble.
>>htdocs/screenshots/finance_work2.py is working for
me >>with matplotlib CVS, 0.83.2 and 0.83

After seeing that it worked with finance_work2.py and
spending the better half of today on it. It turns out
that

        setp(axMiddle.get_xticklabels(),
'horizontalalignment', 'right', fontsize=textSize,
rotation=45)

has to be right before the show() or the savefig() for
the text to show correctly. In previous version of
matplotlib it did not matter but with 0.83 it has to
be after you have finished plotting. 

Thanks for your help. 

VJ