matplotlib-users Mailing List for matplotlib

Thanks, John!  Funny thing, I, too, recently installed Glade!  That's =
it!
Best,
Dave

>>>>> "Nordquest," == Nordquest, David A <NOR...@ga...> writes:

    Nordquest> BTW, if I do the pygtk test ( >>>import pygtk >>>
    Nordquest> pygtk.require('2.0')
    >>>> import gtk ) once, I get an error message.  If I do it again
    >>>> without changing anything, I get no error message.

This reimport situation you describe is expected.  If you import a
module a second time, python simply ignores it.  So if it failed the
first time, it will fail silently the next times.  You should exist
python and start over.  The problem you are experiencing is definitely
with gtk and not matplotlib.

In these situations, the best thing to do is go into DOS or a command
shell (Start->Run->command ENTER).  Write a little script test.py that
contains only

import pygtk
pygtk.require('2.0')
import gtk

Then go into the shell, an cd into the dir containing test.py.

Manually set your PATH, something like (depends on which windows
platform you are on)

  c:> set PATH=c:\GTK\bin;C:\GTK\lib;C:\Python23;C:\windows\command
  c:> python test.py

I know you've checked your path ad nauseum, but there is still a
decent change is the cause of your problem, 9 times out of 10.

Hey, didn't you solve this once before :-) ?  Is this a new platform
for you?  Did you reinstall GTK, if so to where?  What does

  c:> dir c:\GTK\bin

reveal?  I assume you've reread
http://www.async.com.br/faq/pygtk/index.py?req=show&file=faq21.012.htp
100 times.

There is a long thread on the pygtk mailing list where Cousing Stanley
got his gtk corrupted by installing glade, which writes some older
libgtk versions into the windows system dir.  Do a file search for
libgtk and make sure nothing shows up outside of your GTK install
tree.  Read this thread
http://www.mail-archive.com/py...@da.../msg07324.html, which is
filled with good advice.

Good luck!
JDH

>>>>> "Peter" == Peter Groszkowski <pgr...@ge...> writes:

    Peter> plot(date_in_some_format, data)

Are the dates strings, python datetime instances, mx datetime
instances, or what?

Here is a thread on python-list you may be interested in

http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&threadm=mailman.766.1068941179.702.python-list%40python.org&rnum=1&prev=/groups%3Fq%3Dmatplotlib%2Bdate%26ie%3DUTF-8%26oe%3DUTF-8%26hl%3Den%26btnG%3DGoogle%2BSearch

    Peter> I suppose an alternative would be to convert the times to
    Peter> say seconds, create a plot and manually add the actual
    Peter> date/time label (text). This would be tedious but doable.

Currently this is the best way.  It would not be too much work to
write a function called plotdate which took, for example, python2.3
datetime instances as the x arg, arbitrary y values, and a datetime
format string as an optional arg, and did all the conversions for you,
set the tick labels, etc...  If you want to do it, I think it would be
a nice addition to matplotlib.  

JDH

Hi everyone:

I am interested in plotting data in the form:

2004/01/29 15:29:17.161621101   5
2004/01/29 15:29:18.161621061   6
2004/01/29 15:29:19.161621021   7
2004/01/29 15:29:20.161620981   8
2004/01/29 15:29:21.161620941   9
2004/01/29 15:29:22.161620901   0
2004/01/29 15:29:23.161620861   1
...

In some cases I will have data every second, other times every minute or 
hour.. and so on..

Ideally I would like the x-axis of my plots to show the time/dates as 
the units. Is this currently possible with matplotlib? So in other words 
could I call on:

plot(date_in_some_format, data)

I suppose an alternative would be to convert the times to say seconds, 
create a plot and manually add the actual date/time label (text). This 
would be tedious but doable.

Thanks.

-- 
Peter Groszkowski         Gemini Observatory
Tel: +1 808 974-2509      670 N. A'ohoku Place
Fax: +1 808 935-9235      Hilo, Hawai'i 96720, USA

I've checked my path several times and all seems to be as it should be.  =
However when I try to use pygtk and the latest gtk runtime and =
matplotlib under Win98, I get the following error:

>>> import pygtk
>>> pygtk.require('2.0')
>>> import gtk
>>> from matplotlib.matlab import *

Traceback (most recent call last):
  File "<pyshell#6>", line 1, in -toplevel-
    from matplotlib.matlab import *
  File "D:\PROGRA~1\PYTHON23\Lib\site-packages\matplotlib\matlab.py", =
line 124, in -toplevel-
    from backends import new_figure_manager, error_msg, \
  File =
"D:\PROGRA~1\PYTHON23\Lib\site-packages\matplotlib\backends\__init__.py",=
 line 12, in -toplevel-
    from backend_gtk import  \
  File =
"D:\PROGRA~1\PYTHON23\Lib\site-packages\matplotlib\backends\backend_gtk.p=
y", line 15, in -toplevel-
    from gtk import gdk
ImportError: cannot import name gdk

I'm probably overlooking something obvious but would be grateful for =
suggestions.

BTW, if I do the pygtk test (  >>>import pygtk >>> pygtk.require('2.0')
  >>> import gtk  ) once, I get an error message.  If I do it again =
without changing anything, I get no error message.

Dave