matplotlib-users

[Matplotlib-users] Number of decimal places

[Nils W. <nw...@ia...>]

Hi all,

How can I increase the number of decimal places in yticks 
?

  Nils

from matplotlib.ticker import ScalarFormatter
formatter = 
ScalarFormatter(useMathText=True,useOffset=False)
formatter.set_scientific(True)
formatter.set_powerlimits((-12,12))
print dir (formatter)
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.yaxis.set_major_formatter(formatter)

import numpy as np

A=np.array([[ 1 , 0.000000E+00 , 5.234141E-06],
             [ 2 , 1.000000E+00 , 5.233310E-06],
             [ 3 , 2.000000E+00 , 5.232660E-06],
             [ 4 , 3.000000E+00 , 5.231808E-06],
             [ 5 , 4.000000E+00 , 5.231277E-06],
             [ 6 , 5.000000E+00 , 5.230664E-06],
             [ 7 , 6.000000E+00 , 5.230423E-06],
             [ 8 , 7.000000E+00 , 5.230136E-06]])

ax.plot(A[:,1],A[:,2])
plt.show()

Re: [Matplotlib-users] Number of decimal places

[Eric F. <ef...@ha...>]

On 02/23/2012 01:13 AM, Nils Wagner wrote:
> Hi all,
>
> How can I increase the number of decimal places in yticks ?

One way is to install mpl from git master.  The ScalarFormatter handles 
this situation better now:

In [15]: print '\n'.join([tl.get_text() for tl in ax.get_yticklabels()])
$\mathdefault{0.0000052300}$
$\mathdefault{0.0000052305}$
$\mathdefault{0.0000052310}$
$\mathdefault{0.0000052315}$
$\mathdefault{0.0000052320}$
$\mathdefault{0.0000052325}$
$\mathdefault{0.0000052330}$
$\mathdefault{0.0000052335}$
$\mathdefault{0.0000052340}$
$\mathdefault{0.0000052345}$

Eric
>
> Nils
>
> from matplotlib.ticker import ScalarFormatter
> formatter = ScalarFormatter(useMathText=True,useOffset=False)
> formatter.set_scientific(True)
> formatter.set_powerlimits((-12,12))
> print dir (formatter)
> import matplotlib.pyplot as plt
> fig = plt.figure()
> ax = fig.add_subplot(111)
> ax.yaxis.set_major_formatter(formatter)
>
> import numpy as np
>
> A=np.array([[ 1 , 0.000000E+00 , 5.234141E-06],
> [ 2 , 1.000000E+00 , 5.233310E-06],
> [ 3 , 2.000000E+00 , 5.232660E-06],
> [ 4 , 3.000000E+00 , 5.231808E-06],
> [ 5 , 4.000000E+00 , 5.231277E-06],
> [ 6 , 5.000000E+00 , 5.230664E-06],
> [ 7 , 6.000000E+00 , 5.230423E-06],
> [ 8 , 7.000000E+00 , 5.230136E-06]])
>
> ax.plot(A[:,1],A[:,2])
> plt.show()
>
>
>
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