matplotlib-users

[Matplotlib-users] Date demos from examples fail to run

[Delbert D. F. <iq...@so...>]

I am evaluating matplotlib for its date handling for plotting time 
series produced by a unsteady-flow simulation package.  
I downloaded the Debian package from http://anakonda.altervista.org/debian
because I could not get apt-get to get the package after modifying
my sources.list.  

However, dpkg did not complain about any missing packages and 
several test cases worked well.  However, none of the following 
examples would run

date_demo1.py  
    error---cannot import date2num, num2date

date_demo2.py
    error--cannot import name MONDAY

date_demo_convert.py
    error--cannot import DayLocator, HourLocator

date_demo_rrule.py
    error--cannot import name YEARLY

After some time checking docs and looking at the various
*.py files involved, I noticed that none of the dateutl files 
were on my system and neither were the pytz files.  
The documentation on the web site clearly states that 
the dateutil files are included in the package but somehow 
they got missed in the 0.64-1 release downloaded from the
site given above.  

After downloading and installing these two packages all 
but date_demo_rrule.py completed properly.  
The error in this case was an unknown name "rand".
A check of the Python Library reference stated it was
obsolete.  I replaced it with random.randrange but 
got another error, an assertion error apparently on 
the y value.  Being somewhat new to Python and 
even newer to matplotlib I gave up on that demo. 

Perhaps someone else can test date_demo_rrule.py
and see what happens.  It is always a good thing when
demos in fact run!

I am also testing under MS Windows and the dateutils
and pytz files came with that install but none of the 
example files came.  Not sure why they are not 
included in the *.exe installer. 

I am using Python 2.3.4
matplotlib   0.64-1
Libranet 2.8.1
Kernel 2.6.9

                                      Delbert Franz 

Re: [Matplotlib-users] Date demos from examples fail to run

[Philip A. <pa...@eo...>]

Delbert D. Franz writes:
 > I am evaluating matplotlib for its date handling for plotting time 
 > series produced by a unsteady-flow simulation package.  
 > I downloaded the Debian package from http://anakonda.altervista.org/debian
 > because I could not get apt-get to get the package after modifying
 > my sources.list.  

This problem went away for me when I upgraded

to date-util to version 0.5
https://moin.conectiva.com.br/DateUtil#head-f5cbdf6bfb51439be085b5c6b7460a7c91eabc3c

-- Phil

Re: [Matplotlib-users] Date demos from examples fail to run

[John H. <jdh...@ac...>]

>>>>> "Delbert" == Delbert D Franz <iq...@so...> writes:

    Delbert> After downloading and installing these two packages all
    Delbert> but date_demo_rrule.py completed properly.  The error in
    Delbert> this case was an unknown name "rand".  A check of the
    Delbert> Python Library reference stated it was obsolete.  I
    Delbert> replaced it with random.randrange but got another error,
    Delbert> an assertion error apparently on the y value.  Being
    Delbert> somewhat new to Python and even newer to matplotlib I
    Delbert> gave up on that demo.

    Delbert> Perhaps someone else can test date_demo_rrule.py and see
    Delbert> what happens.  It is always a good thing when demos in
    Delbert> fact run!

True!  But all of these demos do run for me.  I suggest you flush your
existing matplotlib by removing site-packages/matplotlib and your
"build" directory and reinstall from the official source at
http://sourceforge.net/project/showfiles.php?group_id=80706&package_id=82474&release_id=281218.
Please follow the instructions at
http://matplotlib.sourceforge.net/installing.html, eg make sure you
have numeric or numarray installed when you compile matplotlib.

Let us know if you have more troubles, and please include a full
traceback from one of the date demos and run it with

> python date_demo1.py --verbose-helpful

and report the output.


    Delbert> I am also testing under MS Windows and the dateutils and
    Delbert> pytz files came with that install but none of the example
    Delbert> files came.  Not sure why they are not included in the
    Delbert> *.exe installer.

It's a distutils thing.  Suggestions here welcome.

JDH

Re: [Matplotlib-users] Date demos from examples fail to run

[Delbert D. F. <iq...@so...>]

On Thursday 09 December 2004 03:22 pm, John Hunter wrote:
> >>>>> "Delbert" == Delbert D Franz <iq...@so...> writes:
> 
>     Delbert> After downloading and installing these two packages all
>     Delbert> but date_demo_rrule.py completed properly.  The error in
>     Delbert> this case was an unknown name "rand".  A check of the
>     Delbert> Python Library reference stated it was obsolete.  I
>     Delbert> replaced it with random.randrange but got another error,
>     Delbert> an assertion error apparently on the y value.  Being
>     Delbert> somewhat new to Python and even newer to matplotlib I
>     Delbert> gave up on that demo.
> 
>     Delbert> Perhaps someone else can test date_demo_rrule.py and see
>     Delbert> what happens.  It is always a good thing when demos in
>     Delbert> fact run!
> 
> True!  But all of these demos do run for me.  I suggest you flush your
> existing matplotlib by removing site-packages/matplotlib and your
> "build" directory and reinstall from the official source at
> http://sourceforge.net/project/showfiles.php?group_id=80706&package_id=82474&release_id=281218.
> Please follow the instructions at
> http://matplotlib.sourceforge.net/installing.html, eg make sure you
> have numeric or numarray installed when you compile matplotlib.
> 

After a bit of pondering and  one false start (one compile failed because
it could not find some item related to GTK) I got matplotlib compiled for
the Tkinter backend only.  It is the only one I'm interested in right now
anyway.  

An update to the .matplotlibrc file solved the problem of seeking the GTKAgg 
backend which was not there and we were off to the races.  All of the date
examples completed without a hitch.  A quite gratifying result!  Apparently 
the Debian package I downloaded had some problems.

One of the biggest challenges was translating short forms of software names
into the package names used on the Debian package site-just one of those
realities of the great world of open-source software.  Not everyone uses
the same descriptive name for the same entity. 

> Let us know if you have more troubles, and please include a full
> traceback from one of the date demos and run it with
> 
> > python date_demo1.py --verbose-helpful
> 
> and report the output.
> 
> 
>     Delbert> I am also testing under MS Windows and the dateutils and
>     Delbert> pytz files came with that install but none of the example
>     Delbert> files came.  Not sure why they are not included in the
>     Delbert> *.exe installer.
> 
> It's a distutils thing.  Suggestions here welcome.
> 
> JDH
> 
> 
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