Re: [Matplotlib-users] x axis alignment with bar graph

[John H. <joh...@gm...>]

Thanks Eric!  Here is corrected code that works:

import matplotlib
from datetime import *
import time
from pylab import *


def toOrd(strDate):
	return datetime(*time.strptime(strDate,"%m/%d/%y")[0:5]).toordinal()

def main():
	
	startDate = toOrd("05/24/05")
	endDate = toOrd("11/21/06")
	
	dates = range(startDate,endDate,7)
	figure(1)
	
	ax1 = subplot(211,axisbelow=True)
	plot_date(dates,dates,visible = False)
	ax1.bar(dates,dates, width=3.0)
	
	ax2 = subplot(212,axisbelow=True, sharex=ax1)
	plot_date(dates,dates) #,'-',color = priceColor)
	
	show()

	

if __name__ == '__main__':
	main()
	


On Jan 16, 2008, at 1:02 PM, Eric Firing wrote:

> John Harrison wrote:
>> bump.  please...?
>> Begin forwarded message:
>>>
>>> I have some code that produces a series of graphs of data over  
>>> time.  For the most part it works well, but for certain  
>>> combinations of dates the two plots do not line up, due to the  
>>> width of the bars in the first subplot.  What is the best way for  
>>> force my second subplot's x axis to be identical to that of the  
>>> first subplot?
>
> Check the sharex kwarg.  In the examples directory, see  
> ganged_plots.py, shared_axis_demo.py, and any others that include  
> the sharex kwarg.
>
> Eric
>
>
>>>
>>> Thanks!
>>>
>>> Here is minimal code reproducing the problem:
>>>
>>> import matplotlib
>>> from datetime import *
>>> import time
>>> from pylab import *
>>>
>>>
>>> def toOrd(strDate):
>>> return datetime(*time.strptime(strDate,"%m/%d/%y")[0:5]).toordinal()
>>>
>>> def main():
>>>
>>>
>>> startDate = toOrd("05/24/05")
>>> endDate = toOrd("11/21/06")
>>>
>>>
>>> dates = range(startDate,endDate,7)
>>> figure(1)
>>>
>>>
>>> axis = subplot(211,axisbelow=True)
>>> plot_date(dates,dates,visible = False)
>>> axis.bar(dates,dates, width=3.0)
>>>
>>>
>>> axis = subplot(212,axisbelow=True)
>>> plot_date(dates,dates) #,'-',color = priceColor)
>>>
>>>
>>> show()
>>>
>>>
>>>
>>> if __name__ == '__main__':
>>> main()
>>>
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