Re: [Matplotlib-users] type error with python 3.2 and version 1.1.1 of matplotlib (numpy error)

2012-09-06 Thread Eric Firing
On 2012/09/05 6:17 PM, Paul Tremblay wrote:
 Hmm. I found that mpl handled my datetime objects just fine:

Right, mpl has handled python datetime objects for a long time, but the 
numpy array with a datetime dtype is a new and different object, and it 
will take a bit of work to support it properly.

Eric


 # put the weeks on the x axis
 # dates are datetime.datetime
 ax.plot(dates, defects)
 ax.xaxis.set_major_formatter(
  matplotlib.dates.DateFormatter('%W'))

 # create an invisible line in order to
 # create a secondary x axis below
 # the first axis, which just has the month(s)
 newax = fig.add_axes(ax.get_position())
 newax.spines['bottom'].set_position(('outward', 25))
 newax.patch.set_visible(False)
 newax.yaxis.set_visible(False)
 # months are also datetime. However, I filtered out
 # all dates except the first date for each month
 newax.plot_date(months, y,  visible=False)
 newax.xaxis.set_major_locator(
  matplotlib.dates.MonthLocator()
 )
 newax.xaxis.set_major_formatter(
  matplotlib.dates.DateFormatter('%b')
 )

 On Thu, Sep 6, 2012 at 12:02 AM, Eric Firing efir...@hawaii.edu
 mailto:efir...@hawaii.edu wrote:

 On 2012/09/05 4:04 PM, Paul Tremblay wrote:
   I am using numpy 1.7, which I built myself (python3 setup.py
 build). I
   had a chance to look a bit deeper into matplotlib, which in turn
 forced
   me to learn a bit of numpy, and now I see that it probably makes more
   sense to use numpy arrays for my data. Since the default for an
 array is
   a float, most users won't encounter the problems I did, but a
 warning in
   a FAQ might solve a few headaches, regardless of how the developers
   decided to go.

 Paul,

 numpy 1.7 has a new datetime dtype which probably would be good for your
 use--except that mpl doesn't support it yet.  That will be a project for
 mpl v1.3.

 Eric

  
   Thanks for your help.
  
   Paul
  
   On Tue, Sep 4, 2012 at 3:09 PM, Benjamin Root ben.r...@ou.edu
 mailto:ben.r...@ou.edu
   mailto:ben.r...@ou.edu mailto:ben.r...@ou.edu wrote:
  
  
  
   On Tue, Sep 4, 2012 at 2:20 PM, Paul Tremblay
   paulhtremb...@gmail.com mailto:paulhtremb...@gmail.com
 mailto:paulhtremb...@gmail.com mailto:paulhtremb...@gmail.com
 wrote:
  
  
   The following Python code:
  
ax.fill_between(dates, lower, upper, facecolor='gray',
 alpha=0.5)
  
   Produces this error with Python 3.2:
  
   Traceback (most recent call last):
  File scripts/audit_reports_weekly.py, line 150, in
 module
ax.fill_between(dates, lower, upper, facecolor='gray',
   alpha=0.5)
  File
  
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/matplotlib/axes.py,
   line 6741, in fill_between
y1 = ma.masked_invalid(self.convert_yunits(y1))
  File
  
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/numpy/ma/core.py,
   line 2241, in masked_invalid
condition = ~(np.isfinite(a))
   TypeError: ufunc 'isfinite' not supported for the input
 types,
   and the inputs could not be safely coerced to any supported
   types according to the casting rule ''safe''
  
  
   [Decimal('3619.900530366609820157812617'), .]
  
   If I change the list from type Decimal to type float, then I
   don't get the error. Likewise, if I use Python 2.7, I
 also don't
   get an error.
  
   After reading over the error message, I realize that this
 error
   really results because of numpy, not matplotlib. But I'll go
   ahead and post this message, in case you are unaware of the
   problem.
  
  
   Just a quick note, mpl v1.1.x is not officially supported for
 py3k.
   The upcoming release of v1.2.0 will be the first official release
   with such support.
  
   That being said, it probably would be a good idea to make
 sure where
   the bug lies for this one (numpy or matplotlib).  Which
 version of
   numpy are you using?
  
   Ben Root
  
  
  
  
  
 
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   threat landscape has changed and how IT managers can respond.
 Discussions
   will include endpoint security, mobile security and the latest in
 malware
   threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
  
  
  
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Re: [Matplotlib-users] type error with python 3.2 and version 1.1.1 of matplotlib (numpy error)

2012-09-06 Thread Benjamin Root
On Thu, Sep 6, 2012 at 2:24 AM, Eric Firing efir...@hawaii.edu wrote:

 On 2012/09/05 6:17 PM, Paul Tremblay wrote:
  Hmm. I found that mpl handled my datetime objects just fine:

 Right, mpl has handled python datetime objects for a long time, but the
 numpy array with a datetime dtype is a new and different object, and it
 will take a bit of work to support it properly.

 Eric


Pedantic: numpy's datetime64 dtype, not datetime.

Ben Root
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Re: [Matplotlib-users] type error with python 3.2 and version 1.1.1 of matplotlib (numpy error)

2012-09-05 Thread Paul Tremblay
I am using numpy 1.7, which I built myself (python3 setup.py build). I had
a chance to look a bit deeper into matplotlib, which in turn forced me to
learn a bit of numpy, and now I see that it probably makes more sense to
use numpy arrays for my data. Since the default for an array is a float,
most users won't encounter the problems I did, but a warning in a FAQ might
solve a few headaches, regardless of how the developers decided to go.

Thanks for your help.

Paul

On Tue, Sep 4, 2012 at 3:09 PM, Benjamin Root ben.r...@ou.edu wrote:



 On Tue, Sep 4, 2012 at 2:20 PM, Paul Tremblay paulhtremb...@gmail.comwrote:


 The following Python code:

 ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)

 Produces this error with Python 3.2:

 Traceback (most recent call last):
   File scripts/audit_reports_weekly.py, line 150, in module
 ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)
   File
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/matplotlib/axes.py,
 line 6741, in fill_between
 y1 = ma.masked_invalid(self.convert_yunits(y1))
   File
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/numpy/ma/core.py,
 line 2241, in masked_invalid
 condition = ~(np.isfinite(a))
 TypeError: ufunc 'isfinite' not supported for the input types, and the
 inputs could not be safely coerced to any supported types according to the
 casting rule ''safe''


 [Decimal('3619.900530366609820157812617'), .]

 If I change the list from type Decimal to type float, then I don't get
 the error. Likewise, if I use Python 2.7, I also don't get an error.

 After reading over the error message, I realize that this error really
 results because of numpy, not matplotlib. But I'll go ahead and post this
 message, in case you are unaware of the problem.


 Just a quick note, mpl v1.1.x is not officially supported for py3k.  The
 upcoming release of v1.2.0 will be the first official release with such
 support.

 That being said, it probably would be a good idea to make sure where the
 bug lies for this one (numpy or matplotlib).  Which version of numpy are
 you using?

 Ben Root


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Re: [Matplotlib-users] type error with python 3.2 and version 1.1.1 of matplotlib (numpy error)

2012-09-05 Thread Eric Firing
On 2012/09/05 4:04 PM, Paul Tremblay wrote:
 I am using numpy 1.7, which I built myself (python3 setup.py build). I
 had a chance to look a bit deeper into matplotlib, which in turn forced
 me to learn a bit of numpy, and now I see that it probably makes more
 sense to use numpy arrays for my data. Since the default for an array is
 a float, most users won't encounter the problems I did, but a warning in
 a FAQ might solve a few headaches, regardless of how the developers
 decided to go.

Paul,

numpy 1.7 has a new datetime dtype which probably would be good for your 
use--except that mpl doesn't support it yet.  That will be a project for 
mpl v1.3.

Eric


 Thanks for your help.

 Paul

 On Tue, Sep 4, 2012 at 3:09 PM, Benjamin Root ben.r...@ou.edu
 mailto:ben.r...@ou.edu wrote:



 On Tue, Sep 4, 2012 at 2:20 PM, Paul Tremblay
 paulhtremb...@gmail.com mailto:paulhtremb...@gmail.com wrote:


 The following Python code:

  ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)

 Produces this error with Python 3.2:

 Traceback (most recent call last):
File scripts/audit_reports_weekly.py, line 150, in module
  ax.fill_between(dates, lower, upper, facecolor='gray',
 alpha=0.5)
File
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/matplotlib/axes.py,
 line 6741, in fill_between
  y1 = ma.masked_invalid(self.convert_yunits(y1))
File
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/numpy/ma/core.py,
 line 2241, in masked_invalid
  condition = ~(np.isfinite(a))
 TypeError: ufunc 'isfinite' not supported for the input types,
 and the inputs could not be safely coerced to any supported
 types according to the casting rule ''safe''


 [Decimal('3619.900530366609820157812617'), .]

 If I change the list from type Decimal to type float, then I
 don't get the error. Likewise, if I use Python 2.7, I also don't
 get an error.

 After reading over the error message, I realize that this error
 really results because of numpy, not matplotlib. But I'll go
 ahead and post this message, in case you are unaware of the
 problem.


 Just a quick note, mpl v1.1.x is not officially supported for py3k.
 The upcoming release of v1.2.0 will be the first official release
 with such support.

 That being said, it probably would be a good idea to make sure where
 the bug lies for this one (numpy or matplotlib).  Which version of
 numpy are you using?

 Ben Root




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[Matplotlib-users] type error with python 3.2 and version 1.1.1 of matplotlib (numpy error)

2012-09-04 Thread Paul Tremblay
The following Python code:

ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)

Produces this error with Python 3.2:

Traceback (most recent call last):
  File scripts/audit_reports_weekly.py, line 150, in module
ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)
  File
/home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/matplotlib/axes.py,
line 6741, in fill_between
y1 = ma.masked_invalid(self.convert_yunits(y1))
  File
/home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/numpy/ma/core.py,
line 2241, in masked_invalid
condition = ~(np.isfinite(a))
TypeError: ufunc 'isfinite' not supported for the input types, and the
inputs could not be safely coerced to any supported types according to the
casting rule ''safe''


[Decimal('3619.900530366609820157812617'), .]

If I change the list from type Decimal to type float, then I don't get the
error. Likewise, if I use Python 2.7, I also don't get an error.

After reading over the error message, I realize that this error really
results because of numpy, not matplotlib. But I'll go ahead and post this
message, in case you are unaware of the problem.
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Re: [Matplotlib-users] type error with python 3.2 and version 1.1.1 of matplotlib (numpy error)

2012-09-04 Thread Benjamin Root
On Tue, Sep 4, 2012 at 2:20 PM, Paul Tremblay paulhtremb...@gmail.comwrote:


 The following Python code:

 ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)

 Produces this error with Python 3.2:

 Traceback (most recent call last):
   File scripts/audit_reports_weekly.py, line 150, in module
 ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)
   File
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/matplotlib/axes.py,
 line 6741, in fill_between
 y1 = ma.masked_invalid(self.convert_yunits(y1))
   File
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/numpy/ma/core.py,
 line 2241, in masked_invalid
 condition = ~(np.isfinite(a))
 TypeError: ufunc 'isfinite' not supported for the input types, and the
 inputs could not be safely coerced to any supported types according to the
 casting rule ''safe''


 [Decimal('3619.900530366609820157812617'), .]

 If I change the list from type Decimal to type float, then I don't get the
 error. Likewise, if I use Python 2.7, I also don't get an error.

 After reading over the error message, I realize that this error really
 results because of numpy, not matplotlib. But I'll go ahead and post this
 message, in case you are unaware of the problem.


Just a quick note, mpl v1.1.x is not officially supported for py3k.  The
upcoming release of v1.2.0 will be the first official release with such
support.

That being said, it probably would be a good idea to make sure where the
bug lies for this one (numpy or matplotlib).  Which version of numpy are
you using?

Ben Root
--
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will include endpoint security, mobile security and the latest in malware 
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Re: [Matplotlib-users] type error with python 3.2 and version 1.1.1 of matplotlib (numpy error)

2012-09-04 Thread Eric Firing
On 2012/09/04 9:09 AM, Benjamin Root wrote:


 On Tue, Sep 4, 2012 at 2:20 PM, Paul Tremblay paulhtremb...@gmail.com
 mailto:paulhtremb...@gmail.com wrote:


 The following Python code:

  ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)

 Produces this error with Python 3.2:

 Traceback (most recent call last):
File scripts/audit_reports_weekly.py, line 150, in module
  ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)
File
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/matplotlib/axes.py,
 line 6741, in fill_between
  y1 = ma.masked_invalid(self.convert_yunits(y1))
File
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/numpy/ma/core.py,
 line 2241, in masked_invalid
  condition = ~(np.isfinite(a))
 TypeError: ufunc 'isfinite' not supported for the input types, and
 the inputs could not be safely coerced to any supported types
 according to the casting rule ''safe''


 [Decimal('3619.900530366609820157812617'), .]

 If I change the list from type Decimal to type float, then I don't
 get the error. Likewise, if I use Python 2.7, I also don't get an error.

 After reading over the error message, I realize that this error
 really results because of numpy, not matplotlib. But I'll go ahead
 and post this message, in case you are unaware of the problem.


 Just a quick note, mpl v1.1.x is not officially supported for py3k.  The
 upcoming release of v1.2.0 will be the first official release with such
 support.

 That being said, it probably would be a good idea to make sure where the
 bug lies for this one (numpy or matplotlib).  Which version of numpy are
 you using?

Should this be considered a bug?  Or should we say that we don't support 
Decimal inputs?  If we are going to support Decimal inputs, then we need 
to put in filters to force conversion to float.  Do you want to have to 
check every entry in every list input to see if it Decimal?

Eric


 Ben Root


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Re: [Matplotlib-users] type error with python 3.2 and version 1.1.1 of matplotlib (numpy error)

2012-09-04 Thread Benjamin Root
On Tue, Sep 4, 2012 at 3:24 PM, Eric Firing efir...@hawaii.edu wrote:

 On 2012/09/04 9:09 AM, Benjamin Root wrote:
 
 
  On Tue, Sep 4, 2012 at 2:20 PM, Paul Tremblay paulhtremb...@gmail.com
  mailto:paulhtremb...@gmail.com wrote:
 
 
  The following Python code:
 
   ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)
 
  Produces this error with Python 3.2:
 
  Traceback (most recent call last):
 File scripts/audit_reports_weekly.py, line 150, in module
   ax.fill_between(dates, lower, upper, facecolor='gray',
 alpha=0.5)
 File
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/matplotlib/axes.py,
  line 6741, in fill_between
   y1 = ma.masked_invalid(self.convert_yunits(y1))
 File
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/numpy/ma/core.py,
  line 2241, in masked_invalid
   condition = ~(np.isfinite(a))
  TypeError: ufunc 'isfinite' not supported for the input types, and
  the inputs could not be safely coerced to any supported types
  according to the casting rule ''safe''
 
 
  [Decimal('3619.900530366609820157812617'), .]
 
  If I change the list from type Decimal to type float, then I don't
  get the error. Likewise, if I use Python 2.7, I also don't get an
 error.
 
  After reading over the error message, I realize that this error
  really results because of numpy, not matplotlib. But I'll go ahead
  and post this message, in case you are unaware of the problem.
 
 
  Just a quick note, mpl v1.1.x is not officially supported for py3k.  The
  upcoming release of v1.2.0 will be the first official release with such
  support.
 
  That being said, it probably would be a good idea to make sure where the
  bug lies for this one (numpy or matplotlib).  Which version of numpy are
  you using?

 Should this be considered a bug?  Or should we say that we don't support
 Decimal inputs?  If we are going to support Decimal inputs, then we need
 to put in filters to force conversion to float.  Do you want to have to
 check every entry in every list input to see if it Decimal?

 Eric


Looking at the message, it is saying that the np.isfinite() function fails
on Decimal inputs.  From our perspective, a Decimal input should look just
the same as integer and floats (following the duck-typing paradigm).
Therefore, I think this problem lies squarely at the feet of numpy.
However, I am doubtful of just how quickly to expect this issue to be
solved by them.

Ben Root
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Re: [Matplotlib-users] type error with python 3.2 and version 1.1.1 of matplotlib (numpy error)

2012-09-04 Thread Eric Firing
On 2012/09/04 9:09 AM, Benjamin Root wrote:


 On Tue, Sep 4, 2012 at 2:20 PM, Paul Tremblay paulhtremb...@gmail.com
 mailto:paulhtremb...@gmail.com wrote:


 The following Python code:

  ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)

 Produces this error with Python 3.2:

 Traceback (most recent call last):
File scripts/audit_reports_weekly.py, line 150, in module
  ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)
File
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/matplotlib/axes.py,
 line 6741, in fill_between
  y1 = ma.masked_invalid(self.convert_yunits(y1))
File
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/numpy/ma/core.py,
 line 2241, in masked_invalid
  condition = ~(np.isfinite(a))
 TypeError: ufunc 'isfinite' not supported for the input types, and
 the inputs could not be safely coerced to any supported types
 according to the casting rule ''safe''


 [Decimal('3619.900530366609820157812617'), .]

 If I change the list from type Decimal to type float, then I don't
 get the error. Likewise, if I use Python 2.7, I also don't get an error.

 After reading over the error message, I realize that this error
 really results because of numpy, not matplotlib. But I'll go ahead
 and post this message, in case you are unaware of the problem.


 Just a quick note, mpl v1.1.x is not officially supported for py3k.  The
 upcoming release of v1.2.0 will be the first official release with such
 support.

 That being said, it probably would be a good idea to make sure where the
 bug lies for this one (numpy or matplotlib).  Which version of numpy are
 you using?

To clarify my previous message: I think we will remain mostly at the 
mercy of numpy, which may change from version to version, to determine 
what we can handle.  Apart from registered unit types, we fall back on 
numpy, typically masked_invalid, to handle inputs.  If we really want to 
handle Decimal reliably, then it probably has to be done within the 
units framework.

Eric



 Ben Root


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Re: [Matplotlib-users] type error with python 3.2 and version 1.1.1 of matplotlib (numpy error)

2012-09-04 Thread Drain, Theodore R (343P)
Isn't that what the unit system is for?  It allows users to use whatever 
objects they want and register conversions to/from MPL types.  If Decimal is a 
common use-case, then perhaps MPL should provide those converters but the user 
would (and probably should) still need to activate them.


From: Eric Firing [efir...@hawaii.edu]
Sent: Tuesday, September 04, 2012 12:24 PM
To: matplotlib-users@lists.sourceforge.net
Subject: Re: [Matplotlib-users] type error with python 3.2 and version 1.1.1 of 
matplotlib (numpy error)

On 2012/09/04 9:09 AM, Benjamin Root wrote:


 On Tue, Sep 4, 2012 at 2:20 PM, Paul Tremblay paulhtremb...@gmail.com
 mailto:paulhtremb...@gmail.com wrote:


 The following Python code:

  ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)

 Produces this error with Python 3.2:

 Traceback (most recent call last):
File scripts/audit_reports_weekly.py, line 150, in module
  ax.fill_between(dates, lower, upper, facecolor='gray', alpha=0.5)
File
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/matplotlib/axes.py,
 line 6741, in fill_between
  y1 = ma.masked_invalid(self.convert_yunits(y1))
File
 
 /home/local/ANT/ptrembl/.local/lib/python3.2/site-packages/numpy/ma/core.py,
 line 2241, in masked_invalid
  condition = ~(np.isfinite(a))
 TypeError: ufunc 'isfinite' not supported for the input types, and
 the inputs could not be safely coerced to any supported types
 according to the casting rule ''safe''


 [Decimal('3619.900530366609820157812617'), .]

 If I change the list from type Decimal to type float, then I don't
 get the error. Likewise, if I use Python 2.7, I also don't get an error.

 After reading over the error message, I realize that this error
 really results because of numpy, not matplotlib. But I'll go ahead
 and post this message, in case you are unaware of the problem.


 Just a quick note, mpl v1.1.x is not officially supported for py3k.  The
 upcoming release of v1.2.0 will be the first official release with such
 support.

 That being said, it probably would be a good idea to make sure where the
 bug lies for this one (numpy or matplotlib).  Which version of numpy are
 you using?

Should this be considered a bug?  Or should we say that we don't support
Decimal inputs?  If we are going to support Decimal inputs, then we need
to put in filters to force conversion to float.  Do you want to have to
check every entry in every list input to see if it Decimal?

Eric


 Ben Root


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