Thread: [matplotlib-devel] Status of pylab example loadrec.py

Hi all,

The example loadrec.py illustrates the usage of 
PyExcelerator.

However it seems PyExcelerator is no longer maintained

Is it planned to adapt the example wrt xlwt ?

http://pypi.python.org/pypi/xlwt

Cheers,
            Nils
  

On Wed, Dec 10, 2008 at 3:28 PM, Nils Wagner
<nw...@ia...>wrote:

> Hi all,
>
> The example loadrec.py illustrates the usage of
> PyExcelerator.
>
> However it seems PyExcelerator is no longer maintained
>
> Is it planned to adapt the example wrt xlwt ?
>
> http://pypi.python.org/pypi/xlwt
>


True it is no longer maintained, but it does work.  We are looking into xlwt
(I wasn't aware of it until today when you forwarded the message)

JDH

On Wed, Dec 10, 2008 at 4:26 PM, John Hunter <jd...@gm...> wrote:

>
>> Is it planned to adapt the example wrt xlwt ?
>>
>> http://pypi.python.org/pypi/xlwt
>>
>
>
> True it is no longer maintained, but it does work.  We are looking into
> xlwt (I wasn't aware of it until today when you forwarded the message)
>

I've added support for xlwt in svn r6560  -- give it a whirl

JDH

On Wed, 10 Dec 2008 21:11:12 -0600
  "John Hunter" <jd...@gm...> wrote:
> On Wed, Dec 10, 2008 at 4:26 PM, John Hunter 
><jd...@gm...> wrote:
> 
>>
>>> Is it planned to adapt the example wrt xlwt ?
>>>
>>> http://pypi.python.org/pypi/xlwt
>>>
>>
>>
>> True it is no longer maintained, but it does work.  We 
>>are looking into
>> xlwt (I wasn't aware of it until today when you 
>>forwarded the message)
>>
> 
> I've added support for xlwt in svn r6560  -- give it a 
>whirl
> 
> JDH

Hi John,

I have upgraded to r6561.

python test.py --verbose-helpful
$HOME=/data/home/nwagner
CONFIGDIR=/data/home/nwagner/.matplotlib
matplotlib data path 
/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/mpl-data
loaded rc file /data/home/nwagner/.matplotlib/matplotlibrc
Traceback (most recent call last):
   File "test.py", line 1, in <module>
     import matplotlib.mlab as mlab
   File 
"/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/__init__.py", 
line 700, in <module>
     rcParams['text.usetex'] = 
checkdep_usetex(rcParams['text.usetex'])
   File 
"/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/__init__.py", 
line 367, in checkdep_usetex
     dvipng_v = checkdep_dvipng()
   File 
"/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/__init__.py", 
line 261, in checkdep_dvipng
     stderr=subprocess.PIPE)
   File 
"/data/home/nwagner/local/lib/python2.5/subprocess.py", 
line 593, in __init__
     errread, errwrite)
   File 
"/data/home/nwagner/local/lib/python2.5/subprocess.py", 
line 1079, in _execute_child
     raise child_exception
OSError: [Errno 2] No such file or directory
  

Any idea ?

             Nils

On Thu, 11 Dec 2008 09:13:02 +0100
  "Nils Wagner" <nw...@ia...> wrote:
> On Wed, 10 Dec 2008 21:11:12 -0600
>  "John Hunter" <jd...@gm...> wrote:
>> On Wed, Dec 10, 2008 at 4:26 PM, John Hunter 
>><jd...@gm...> wrote:
>> 
>>>
>>>> Is it planned to adapt the example wrt xlwt ?
>>>>
>>>> http://pypi.python.org/pypi/xlwt
>>>>
>>>
>>>
>>> True it is no longer maintained, but it does work.  We 
>>>are looking into
>>> xlwt (I wasn't aware of it until today when you 
>>>forwarded the message)
>>>
>> 
>> I've added support for xlwt in svn r6560  -- give it a 
>>whirl
>> 
>> JDH
> 
> Hi John,
> 
> I have upgraded to r6561.
> 
> python test.py --verbose-helpful
> $HOME=/data/home/nwagner
> CONFIGDIR=/data/home/nwagner/.matplotlib
> matplotlib data path 
> /data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/mpl-data
> loaded rc file 
>/data/home/nwagner/.matplotlib/matplotlibrc
> Traceback (most recent call last):
>   File "test.py", line 1, in <module>
>     import matplotlib.mlab as mlab
>   File 
> "/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/__init__.py", 
> line 700, in <module>
>     rcParams['text.usetex'] = 
> checkdep_usetex(rcParams['text.usetex'])
>   File 
> "/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/__init__.py", 
> line 367, in checkdep_usetex
>     dvipng_v = checkdep_dvipng()
>   File 
> "/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/__init__.py", 
> line 261, in checkdep_dvipng
>     stderr=subprocess.PIPE)
>   File 
> "/data/home/nwagner/local/lib/python2.5/subprocess.py", 
> line 593, in __init__
>     errread, errwrite)
>   File 
> "/data/home/nwagner/local/lib/python2.5/subprocess.py", 
> line 1079, in _execute_child
>     raise child_exception
> OSError: [Errno 2] No such file or directory
>  
> 
> Any idea ?
> 
>             Nils
> 
  
Works for me if I disable text.usetex in 
~/.matplotlib/matplotlibrc, but for what reason ?


### LaTeX customizations. See 
http://www.scipy.org/Wiki/Cookbook/Matplotlib/UsingTex
#text.usetex         : True   # use latex for all text 
handling. The following fonts

Nils

Hi Nils. I think I fixed the issue causing the traceback with r6563. Can
you please update and try again with text.usetex enabled?

My guess is that you don't have dvipng installed, which was causing the
detection check to throw a traceback rather than return a value
signifying undetected. So, enabling usetex should again trigger the
check, but hopefully this time it will fail gracefully rather than crashing.

-Andrew

Nils Wagner wrote:
> On Thu, 11 Dec 2008 09:13:02 +0100
>   "Nils Wagner" <nw...@ia...> wrote:
>> On Wed, 10 Dec 2008 21:11:12 -0600
>>  "John Hunter" <jd...@gm...> wrote:
>>> On Wed, Dec 10, 2008 at 4:26 PM, John Hunter 
>>> <jd...@gm...> wrote:
>>>
>>>>> Is it planned to adapt the example wrt xlwt ?
>>>>>
>>>>> http://pypi.python.org/pypi/xlwt
>>>>>
>>>>
>>>> True it is no longer maintained, but it does work.  We 
>>>> are looking into
>>>> xlwt (I wasn't aware of it until today when you 
>>>> forwarded the message)
>>>>
>>> I've added support for xlwt in svn r6560  -- give it a 
>>> whirl
>>>
>>> JDH
>> Hi John,
>>
>> I have upgraded to r6561.
>>
>> python test.py --verbose-helpful
>> $HOME=/data/home/nwagner
>> CONFIGDIR=/data/home/nwagner/.matplotlib
>> matplotlib data path 
>> /data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/mpl-data
>> loaded rc file 
>> /data/home/nwagner/.matplotlib/matplotlibrc
>> Traceback (most recent call last):
>>   File "test.py", line 1, in <module>
>>     import matplotlib.mlab as mlab
>>   File 
>> "/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/__init__.py", 
>> line 700, in <module>
>>     rcParams['text.usetex'] = 
>> checkdep_usetex(rcParams['text.usetex'])
>>   File 
>> "/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/__init__.py", 
>> line 367, in checkdep_usetex
>>     dvipng_v = checkdep_dvipng()
>>   File 
>> "/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/__init__.py", 
>> line 261, in checkdep_dvipng
>>     stderr=subprocess.PIPE)
>>   File 
>> "/data/home/nwagner/local/lib/python2.5/subprocess.py", 
>> line 593, in __init__
>>     errread, errwrite)
>>   File 
>> "/data/home/nwagner/local/lib/python2.5/subprocess.py", 
>> line 1079, in _execute_child
>>     raise child_exception
>> OSError: [Errno 2] No such file or directory
>>  
>>
>> Any idea ?
>>
>>             Nils
>>
>   
> Works for me if I disable text.usetex in 
> ~/.matplotlib/matplotlibrc, but for what reason ?
> 
> 
> ### LaTeX customizations. See 
> http://www.scipy.org/Wiki/Cookbook/Matplotlib/UsingTex
> #text.usetex         : True   # use latex for all text 
> handling. The following fonts
> 
> Nils
> 
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On Thu, 11 Dec 2008 10:33:20 -0800
  Andrew Straw <str...@as...> wrote:
> Hi Nils. I think I fixed the issue causing the traceback 
>with r6563. Can
> you please update and try again with text.usetex 
>enabled?
> 
> My guess is that you don't have dvipng installed, which 
>was causing the
> detection check to throw a traceback rather than return 
>a value
> signifying undetected. So, enabling usetex should again 
>trigger the
> check, but hopefully this time it will fail gracefully 
>rather than crashing.
> 
> -Andrew
  
Hi Andrew,

Thank you very much !
Works for me.

>>> import matplotlib.mlab as mlab
/data/home/nwagner/local/lib/python2.5/site-packages/matplotlib/__init__.py:371: 
UserWarning: matplotlibrc text.usetex can not be used with 
*Agg backend unless dvipng-1.5 or later is installed on 
your system
   warnings.warn( 'matplotlibrc text.usetex can not be 
used with *Agg '

Cheers,
             Nils