[Matplotlib-users] Change axis's scale

2010-04-01 Thread timothee cezard
Hi all,
I have several graph to create and the position on the x axis can vary 
quite a lot.
Most of the time I'm quite happy with the default behavior but when my x 
values are very high matplotlib automatically change the ticks and set a 
scale on the axis (see screenshot) 
http://img6.imageshack.us/img6/6834/chab052195802198642shif.png
I looking for a way to change the default behavior to get a scale in 
10E** instead of some random scale.
Is there a simple way of doing that?

Thanks a lot for your help

Tim

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Re: [Matplotlib-users] Problems using bar() with left containing an array of float

2010-03-26 Thread timothee cezard
Thanks Friedrich,
I though the width was calculated on the fly.
does it make sense to use something like
 plt.bar(bins, nb_per_bin, width=(max(bins)-min(bins)) / (1.5*len(bins)))
If I want something more generic

Tim

Friedrich Romstedt wrote:
 You must give a proper :param width: argument:

plt.bar(bins, height, 0.01)

 http://matplotlib.sourceforge.net/api/axes_api.html#matplotlib.axes.Axes.bar

 Friedrich

 2010/3/25 timothee cezard tcez...@staffmail.ed.ac.uk:
   
 Hi all,
 I'm trying to plot a distribution using bar() but when I'm setting the
 left variable to as a sequence of float some of the bar look weird.
 When I replace this sequence by a sequence of int it works fines
 Does anybody know why this happens and how I can fix it?

 Here is the code I'm using:

 if __name__==__main__:
bins=[0.0, 0.02, 0.04, 0.06, 0.08, 0.1, 0.12, 0.14, 0.16,
  0.18, 0.2, 0.22, 0.24, 0.26, 0.28, 0.30, 0.32, 0.34,
  0.36, 0.38, 0.40, 0.42, 0.44, 0.46, 0.48, 0.5, 0.52,
  0.54, 0.56, 0.58, 0.60, 0.62, 0.64, 0.66, 0.68, 0.70,
  0.72, 0.74, 0.76, 0.78, 0.80, 0.82, 0.84, 0.86, 0.88,
  0.90, 0.92, 0.94, 0.96, 0.98, 1.0]
height=[89775, 1665, 1791, 1695, 1467, 1395, 1306, 1169,
1252, 1134, 1190, 1117, 1018, 995, 1055, 904, 960,
886, 810, 821, 829, 763, 766, 857, 737, 862, 724,
852, 742, 644, 733, 679, 630, 672, 665, 659, 663,
653, 657, 700, 731, 721, 699, 871, 837, 913, 940,
966, 1028, 159774, 40002]
fig = plt.figure()
ax = fig.add_subplot(1,1,1)
plt.bar(bins, height)
plt.show()
 

   


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[Matplotlib-users] Problems using bar() with left containing an array of float

2010-03-25 Thread timothee cezard
Hi all,
I'm trying to plot a distribution using bar() but when I'm setting the 
left variable to as a sequence of float some of the bar look weird.
When I replace this sequence by a sequence of int it works fines
Does anybody know why this happens and how I can fix it?

Here is the code I'm using:

if __name__==__main__:
bins=[0.0, 0.02, 0.04, 0.06, 0.08, 0.1, 0.12, 0.14, 0.16,
  0.18, 0.2, 0.22, 0.24, 0.26, 0.28, 0.30, 0.32, 0.34,
  0.36, 0.38, 0.40, 0.42, 0.44, 0.46, 0.48, 0.5, 0.52,
  0.54, 0.56, 0.58, 0.60, 0.62, 0.64, 0.66, 0.68, 0.70,
  0.72, 0.74, 0.76, 0.78, 0.80, 0.82, 0.84, 0.86, 0.88,
  0.90, 0.92, 0.94, 0.96, 0.98, 1.0]
height=[89775, 1665, 1791, 1695, 1467, 1395, 1306, 1169,
1252, 1134, 1190, 1117, 1018, 995, 1055, 904, 960,
886, 810, 821, 829, 763, 766, 857, 737, 862, 724,
852, 742, 644, 733, 679, 630, 672, 665, 659, 663,
653, 657, 700, 731, 721, 699, 871, 837, 913, 940,
966, 1028, 159774, 40002]
fig = plt.figure()
ax = fig.add_subplot(1,1,1)
plt.bar(bins, height)
plt.show()


Tim


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The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.


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Download Intel#174; Parallel Studio Eval
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proactively, and fine-tune applications for parallel performance.
See why Intel Parallel Studio got high marks during beta.
http://p.sf.net/sfu/intel-sw-dev
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