matplotlib-users Mailing List for matplotlib (Page 8)

Joris De Ridder wrote:
> As far as I understand, the algorithm works as follows:
> 
> 1) Define what you mean by "dense" points
>     a) init what you mean by far_away 
>     b) start at the first point, and loop over the points until you find one far_away
>     c) hop to that one, continue looping until you find again a point far_away
>     d) hop to that one, continue looping... etc  until you looped over all points
>     e) count the number of hops.
>         If all points turn out to be far away from each other, 'far_away'
>         was too conservative -> increase far_away and repeat steps b)-e).
>         In the other case: you found a definition of "dense"

This is an odd way to do it. It seems to me that the only way to define 
"dense" is by resolution. What resolution do you want to be able to 
display? As PS is scalable, this isn't an easy question, but it is at 
least limited by the resolution of PS -- does PS use floating or fixed 
point, and what precision? Resolution could also be a user-settable 
property.

Another way to define resolution is by how you are drawing the points. 
If you are drawing dots at 1pt diameter, then there is no reason to plot 
two separate dots that are only 0.1pt from each-other.

-Chris


-- 
Christopher Barker, Ph.D.
Oceanographer
                                     		
NOAA/OR&R/HAZMAT         (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chr...@no...

Kevin Horton wrote:
> I'm not sure where the  bottleneck lies

I don't know any details of either of the GTK back-ends, but this sounds
like what I'd expect.

With the *Agg backends, the rendering is done by Agg, generating an
image in memory, and then the entire image is passed (one way or
another) to the X-server to render. This is pretty quick with a local
X-server, but it is a lot of data to pass over a network.

In contrast, the with the non-Agg back ends, the rendering is done by
the X-server, with MPL passing it drawing commands, rather than images.
In general, there is a lot less data to pas over the network with way,
so it's going to be faster.

>  I also want to note that the GTK  
> backend is useful to some people, and hope that it will continue to  
> be supported (I seem to recall one mention that it was little used).

This is a good point. In general, the Agg back-ends produce nicer an
more consistent results, and, on local machines, performance is just
fine, but in a remote X-session, there are real advantages to using X
for the rendering. The same probably applies to the TK and Wx back-ends
also.

-Chris



-- 
Christopher Barker, Ph.D.
Oceanographer
                                     		
NOAA/OR&R/HAZMAT         (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chr...@no...

   [CB]: What is the maximum precision in Postscript? It seems unlikely that you 
   [CB]: could plot 80,000 points and not have number of them overlap, unless 
   [CB]: it's clipped, so removing essentially redundant points may be another 
   [CB]: way to to go.

This seems to be the way that xmgrace does it. I have been comparing
postscript output of mpl and xmgrace, and found that mpl incorporates the
fulll 80000 points while xmgrace only retains roughly 17000 of them. 

So I downloaded the xmgrace source code and tried to figure out why this is 
the case. Their postscript driver routines are in psdrv.c and are called by routines
in draw.c. Looking into the latter reveiled that they have indeed a purge_dense_points()
function, which removes the points that you wouldn't see on the plot anyway.

As far as I understand, the algorithm works as follows:

1) Define what you mean by "dense" points
    a) init what you mean by far_away 
    b) start at the first point, and loop over the points until you find one far_away
    c) hop to that one, continue looping until you find again a point far_away
    d) hop to that one, continue looping... etc  until you looped over all points
    e) count the number of hops.
        If all points turn out to be far away from each other, 'far_away'
        was too conservative -> increase far_away and repeat steps b)-e).
        In the other case: you found a definition of "dense"

2) Sift out the dense points
    Similar to 1) but only keep the points you hopped to, i.e. the ones that
    are far_away from each other.


It seems to work well for xmgrace, I never encountered any problems of too many
points purged. I do think it needs to be coded in C to work efficiently, though, i.e. 
Python would be too slow. Perhaps the mpl developers might be interested to include
it one day? The gain in postscript file size would be huge...

Cheers,
Joris

Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm

Hi Charlie,

I am sorry about this. I confused the installations on my workstation at
work and those on my laptop. You are right, on my workstation at work I had
only nympy 0.9.8. Works like a dream after updating to numpy 1.0b5.

Oliver

"Charlie Moad" <cw...@gm...> wrote on 07.09.2006 14:19:47:

> Did you upgrade your numpy to 1.0b5?  This is required.
>
> On 9/7/06, oli...@ma... <oli...@ma...> wrote:
> > Hi list,
> >
> > I downloaded the latest version from the link (see under). With 0.87.3
our
> > application worked fine, but with with 0.87.5 we get the following:
> >
> > Traceback (most recent call last):
> >   File "C:\Python24\PanelCheck_V.1.1.0\PanelCheck.py", line 222, in ?
> >     import PanelCheck_GUI
> >   File "C:\Python24\PanelCheck_V.1.1.0\PanelCheck_GUI.py", line 10, in
?
> >     from Line_Plot import *
> >   File "C:\Python24\PanelCheck_V.1.1.0\Line_Plot.py", line 3, in ?
> >     from Plot_Setup import *
> >   File "C:\Python24\PanelCheck_V.1.1.0\Plot_Setup.py", line 9, in ?
> >     from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as
> > FigureCanvas
> >   File
> > "C:\Python24\Lib\site-packages\matplotlib\backends\backend_wxagg.py",
line
> > 21, in ?
> >     from matplotlib.figure import Figure
> >   File "C:\Python24\Lib\site-packages\matplotlib\figure.py", line 5, in
?
> >     from artist import Artist
> >   File "C:\Python24\Lib\site-packages\matplotlib\artist.py", line 4, in
?
> >     from transforms import identity_transform
> >   File "C:\Python24\Lib\site-packages\matplotlib\transforms.py", line
223,
> > in ?
> >     from _transforms import Value, Point, Interval, Bbox, Affine
> >   File "C:\Python24\Lib\site-packages\matplotlib\_transforms.py", line
1,
> > in ?
> >     import sys, numerix
> >   File "C:\Python24\Lib\site-packages\matplotlib\numerix\__init__.py",
line
> > 145, in ?
> >     __import__('fft', g, l)
> >   File
"C:\Python24\Lib\site-packages\matplotlib\numerix\fft\__init__.py",
> > line 11, in ?
> >     from numpy.dft.old import *
> > ImportError: No module named old
> >
> > Thanks
> > Oliver
> >
> >
> >
> >
> >
> > mat...@li... wrote on 06.09.2006
> > 21:20:39:
> >
> > > Sorry all for the error.  I just uploaded "working" (at least for me)
> > > versions to sourceforge again.  For those who are sicking of playing
> > > with mirrors here is a direct download.  Don't expect this link to be
> > > good for a long time though.
> > >
> > > http://euclid.uits.iupui.edu/mplfiles/
> > >
> > > - Charlie
> > >
> > > On 9/6/06, Charlie Moad <cw...@gm...> wrote:
> > > > The source error must of propagated to those builds.  I will post
new
> > > > ones shortly.
> > > >
> > > > On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
> > > > > Well the thread on the devel list that I referred to explicitly
has
> > the
> > > > > win32 exe in its title ("Missing __init__.py in
> > > > > matplotlib-0.87.5.win32-py2.4.exe ?") . The starting post there
> > pretty
> > > > > much says it all.
> > > > >
> > > > > There's also a recent post on the numpy list that sounds like
it's
> > maybe
> > > > > the same problem (quote):
> > > > > """
> > > > > Is there a compatible matplotlib as well?  I was o.k. with mpl
from
> > > > > enthought until I switched numerix to numpy.  That made mpl
unhappy.
> > > > > I downloaded 0.87.5 but I broke something in the process because
now
> > > > > even switching back to Numeric doesn't make mpl happy.
> > > > > """
> > > > >
> > > > > Thanks,
> > > > > Sven
> > > > >
> > > > > Charlie Moad schrieb:
> > > > > > That error was relating to the source release.  Can you please
post
> > > > > > your error for the binary?
> > > > > >
> > > > > > On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
> > > > > >> Charlie Moad schrieb:
> > > > > >> > Minor rev bump for numpy 1.0b5 compatibility.  This release
> > should
> > > > > >> > remain compatible with future 1.0 releases of numpy.
> > > > > >> >
> > > > > >>
> > > > > >> I keep running into the ImportError problem described on the
> > > devel list,
> > > > > >> with the win32 2.4 binary (exe). Is that still just a case of
> > waiting
> > > > > >> for the mirrors to update, or is there a deeper problem? Are
there
> > > > > >> alternative download links? How to tell whether it's the
> > > "right" binary,
> > > > > >> since version numbers are the same?
> > > > > >>
> > > > > >> Thanks for your help,
> > > > > >> Sven
> > > > > >>
> > > > > >
> > > > >
> > > > >
> > > >
> > >
> > >
-------------------------------------------------------------------------
> > > Using Tomcat but need to do more? Need to support web services,
security?
> > > Get stuff done quickly with pre-integrated technology to make your
job
> > easier
> > > Download IBM WebSphere Application Server v.1.0.1 based on Apache
> > Geronimo
> > >
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> > > _______________________________________________
> > > Matplotlib-users mailing list
> > > Mat...@li...
> > > https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> >
> >

>>>>> "Charlie" == Charlie Moad <cw...@gm...> writes:

    Charlie> Did you upgrade your numpy to 1.0b5?  This is required.


I added a "news flash" to the home page alerting people to this

http://matplotlib.sourceforge.net

JDH

Did you upgrade your numpy to 1.0b5?  This is required.

On 9/7/06, oli...@ma... <oli...@ma...> wrote:
> Hi list,
>
> I downloaded the latest version from the link (see under). With 0.87.3 our
> application worked fine, but with with 0.87.5 we get the following:
>
> Traceback (most recent call last):
>   File "C:\Python24\PanelCheck_V.1.1.0\PanelCheck.py", line 222, in ?
>     import PanelCheck_GUI
>   File "C:\Python24\PanelCheck_V.1.1.0\PanelCheck_GUI.py", line 10, in ?
>     from Line_Plot import *
>   File "C:\Python24\PanelCheck_V.1.1.0\Line_Plot.py", line 3, in ?
>     from Plot_Setup import *
>   File "C:\Python24\PanelCheck_V.1.1.0\Plot_Setup.py", line 9, in ?
>     from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as
> FigureCanvas
>   File
> "C:\Python24\Lib\site-packages\matplotlib\backends\backend_wxagg.py", line
> 21, in ?
>     from matplotlib.figure import Figure
>   File "C:\Python24\Lib\site-packages\matplotlib\figure.py", line 5, in ?
>     from artist import Artist
>   File "C:\Python24\Lib\site-packages\matplotlib\artist.py", line 4, in ?
>     from transforms import identity_transform
>   File "C:\Python24\Lib\site-packages\matplotlib\transforms.py", line 223,
> in ?
>     from _transforms import Value, Point, Interval, Bbox, Affine
>   File "C:\Python24\Lib\site-packages\matplotlib\_transforms.py", line 1,
> in ?
>     import sys, numerix
>   File "C:\Python24\Lib\site-packages\matplotlib\numerix\__init__.py", line
> 145, in ?
>     __import__('fft', g, l)
>   File "C:\Python24\Lib\site-packages\matplotlib\numerix\fft\__init__.py",
> line 11, in ?
>     from numpy.dft.old import *
> ImportError: No module named old
>
> Thanks
> Oliver
>
>
>
>
>
> mat...@li... wrote on 06.09.2006
> 21:20:39:
>
> > Sorry all for the error.  I just uploaded "working" (at least for me)
> > versions to sourceforge again.  For those who are sicking of playing
> > with mirrors here is a direct download.  Don't expect this link to be
> > good for a long time though.
> >
> > http://euclid.uits.iupui.edu/mplfiles/
> >
> > - Charlie
> >
> > On 9/6/06, Charlie Moad <cw...@gm...> wrote:
> > > The source error must of propagated to those builds.  I will post new
> > > ones shortly.
> > >
> > > On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
> > > > Well the thread on the devel list that I referred to explicitly has
> the
> > > > win32 exe in its title ("Missing __init__.py in
> > > > matplotlib-0.87.5.win32-py2.4.exe ?") . The starting post there
> pretty
> > > > much says it all.
> > > >
> > > > There's also a recent post on the numpy list that sounds like it's
> maybe
> > > > the same problem (quote):
> > > > """
> > > > Is there a compatible matplotlib as well?  I was o.k. with mpl from
> > > > enthought until I switched numerix to numpy.  That made mpl unhappy.
> > > > I downloaded 0.87.5 but I broke something in the process because now
> > > > even switching back to Numeric doesn't make mpl happy.
> > > > """
> > > >
> > > > Thanks,
> > > > Sven
> > > >
> > > > Charlie Moad schrieb:
> > > > > That error was relating to the source release.  Can you please post
> > > > > your error for the binary?
> > > > >
> > > > > On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
> > > > >> Charlie Moad schrieb:
> > > > >> > Minor rev bump for numpy 1.0b5 compatibility.  This release
> should
> > > > >> > remain compatible with future 1.0 releases of numpy.
> > > > >> >
> > > > >>
> > > > >> I keep running into the ImportError problem described on the
> > devel list,
> > > > >> with the win32 2.4 binary (exe). Is that still just a case of
> waiting
> > > > >> for the mirrors to update, or is there a deeper problem? Are there
> > > > >> alternative download links? How to tell whether it's the
> > "right" binary,
> > > > >> since version numbers are the same?
> > > > >>
> > > > >> Thanks for your help,
> > > > >> Sven
> > > > >>
> > > > >
> > > >
> > > >
> > >
> >
> > -------------------------------------------------------------------------
> > Using Tomcat but need to do more? Need to support web services, security?
> > Get stuff done quickly with pre-integrated technology to make your job
> easier
> > Download IBM WebSphere Application Server v.1.0.1 based on Apache
> Geronimo
> > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> > _______________________________________________
> > Matplotlib-users mailing list
> > Mat...@li...
> > https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>

Hi all,
many times, I have to work with times series in OpenOffice, all datas are 
stored by columns, with the name of the serie in the first row, the second 
the unit,etc..., but OOo is not very suitable for that, dates formatting on 
the x axis is like cutting a tree with a herring ;-)
Then, is there a convenient way to load all my datas with matplotlib, have 
some facililty like with R, like calling datas by their name, and 
automatically setting the rights units directly in plots?

-- 
Lionel Roubeyrie - lro...@li...
LIMAIR
http://www.limair.asso.fr

Hi list,

I downloaded the latest version from the link (see under). With 0.87.3 our
application worked fine, but with with 0.87.5 we get the following:

Traceback (most recent call last):
  File "C:\Python24\PanelCheck_V.1.1.0\PanelCheck.py", line 222, in ?
    import PanelCheck_GUI
  File "C:\Python24\PanelCheck_V.1.1.0\PanelCheck_GUI.py", line 10, in ?
    from Line_Plot import *
  File "C:\Python24\PanelCheck_V.1.1.0\Line_Plot.py", line 3, in ?
    from Plot_Setup import *
  File "C:\Python24\PanelCheck_V.1.1.0\Plot_Setup.py", line 9, in ?
    from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as
FigureCanvas
  File
"C:\Python24\Lib\site-packages\matplotlib\backends\backend_wxagg.py", line
21, in ?
    from matplotlib.figure import Figure
  File "C:\Python24\Lib\site-packages\matplotlib\figure.py", line 5, in ?
    from artist import Artist
  File "C:\Python24\Lib\site-packages\matplotlib\artist.py", line 4, in ?
    from transforms import identity_transform
  File "C:\Python24\Lib\site-packages\matplotlib\transforms.py", line 223,
in ?
    from _transforms import Value, Point, Interval, Bbox, Affine
  File "C:\Python24\Lib\site-packages\matplotlib\_transforms.py", line 1,
in ?
    import sys, numerix
  File "C:\Python24\Lib\site-packages\matplotlib\numerix\__init__.py", line
145, in ?
    __import__('fft', g, l)
  File "C:\Python24\Lib\site-packages\matplotlib\numerix\fft\__init__.py",
line 11, in ?
    from numpy.dft.old import *
ImportError: No module named old

Thanks
Oliver





mat...@li... wrote on 06.09.2006
21:20:39:

> Sorry all for the error.  I just uploaded "working" (at least for me)
> versions to sourceforge again.  For those who are sicking of playing
> with mirrors here is a direct download.  Don't expect this link to be
> good for a long time though.
>
> http://euclid.uits.iupui.edu/mplfiles/
>
> - Charlie
>
> On 9/6/06, Charlie Moad <cw...@gm...> wrote:
> > The source error must of propagated to those builds.  I will post new
> > ones shortly.
> >
> > On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
> > > Well the thread on the devel list that I referred to explicitly has
the
> > > win32 exe in its title ("Missing __init__.py in
> > > matplotlib-0.87.5.win32-py2.4.exe ?") . The starting post there
pretty
> > > much says it all.
> > >
> > > There's also a recent post on the numpy list that sounds like it's
maybe
> > > the same problem (quote):
> > > """
> > > Is there a compatible matplotlib as well?  I was o.k. with mpl from
> > > enthought until I switched numerix to numpy.  That made mpl unhappy.
> > > I downloaded 0.87.5 but I broke something in the process because now
> > > even switching back to Numeric doesn't make mpl happy.
> > > """
> > >
> > > Thanks,
> > > Sven
> > >
> > > Charlie Moad schrieb:
> > > > That error was relating to the source release.  Can you please post
> > > > your error for the binary?
> > > >
> > > > On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
> > > >> Charlie Moad schrieb:
> > > >> > Minor rev bump for numpy 1.0b5 compatibility.  This release
should
> > > >> > remain compatible with future 1.0 releases of numpy.
> > > >> >
> > > >>
> > > >> I keep running into the ImportError problem described on the
> devel list,
> > > >> with the win32 2.4 binary (exe). Is that still just a case of
waiting
> > > >> for the mirrors to update, or is there a deeper problem? Are there
> > > >> alternative download links? How to tell whether it's the
> "right" binary,
> > > >> since version numbers are the same?
> > > >>
> > > >> Thanks for your help,
> > > >> Sven
> > > >>
> > > >
> > >
> > >
> >
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job
easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache
Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Thanks to Darren and David.  Chris Barker answered my question on the
Numpy list (I started over there with a Scipy/Numpy compatibility
problem and switched to this list when it was just matplotlib that
wasn't working).  I don't know if the mpl sourceforge binaries are
fixed yet, but Chris referred me to these:
http://euclid.uits.iupui.edu/mplfiles/
which work great.  I am up and running in Windows.

Ryan

On 9/6/06, Ryan Krauss <rya...@gm...> wrote:
> I am trying to install matplotlib on my office Windows computer.  I
> have installed the following:
> python-2.4.3.msi
> numpy-1.0b5.win32-py2.4.exe
> scipy-0.5.1.win32-py2.4.exe
> matplotlib-0.87.5.win32-py2.4.exe
>
> on a completely fresh install.
>
> I am getting the following message:
> H:\>python
> Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import pylab
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "C:\Python24\Lib\site-packages\pylab.py", line 1, in ?
>     from matplotlib.pylab import *
> ImportError: No module named matplotlib.pylab
> >>> import matplotlib
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ImportError: No module named matplotlib
>
> What am I doing wrong?
>
> Thanks,
>
> Ryan
>

Please try the latest 0.87.5 and numpy 1.0b5 and get back with us if
you still have the problem.

On 9/6/06, Davidlohr Bueso A. <db...@li...> wrote:
> Hi,
>
> I installed matplotlib for winXP, and when I try to import pylab I get
> this error:
>
> >>> from pylab import *
>
> Traceback (most recent call last):
>   File "<pyshell#0>", line 1, in -toplevel-
>     from pylab import *
>   File "C:\Python24\Lib\site-packages\pylab.py", line 1, in -toplevel-
>     from matplotlib.pylab import *
>   File "C:\Python24\Lib\site-packages\matplotlib\pylab.py", line 196, in
> -toplevel-
>     import cm
>   File "C:\Python24\Lib\site-packages\matplotlib\cm.py", line 5, in
> -toplevel-
>     import colors
>   File "C:\Python24\Lib\site-packages\matplotlib\colors.py", line 33, in
> -toplevel-
>     from numerix import array, arange, take, put, Float, Int, where, \
>   File "C:\Python24\Lib\site-packages\matplotlib\numerix\__init__.py",
> line 60, in -toplevel-
>     from Numeric import *
>
> I'm using matplotlib-0.87.2.win32-py2.4.exe
>
> Does anyone know what I'm doing wrong?
>
> Thanks!
>
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

I'm developing an application for personal use on my Mac, using the  
GTAgg backend, which renders a series of plots in a figure in a pygtk  
scrolled window.  I'm currently using matplotlib 0.87.3 installed via  
Fink.  Matplotlib is performing well.

Today I had occasion to log into my Mac over ssh from work.  I noted  
that the application was extremely slow to display the plots.   
Running locally on my Mac, the application takes about 5 seconds to  
display the plots when it opens.  Remotely, it took around 5 minutes  
(repeatable).  On a whim, I tried changing to the GTK backend - now  
it displayed the plots in about 20 seconds, which is quite acceptable  
considering it is remote access over an ssh tunnel.

I checked the CPU usage on both the Mac, and my work PC - the CPU  
usage was very, very low on both machines, so I'm not sure where the  
bottleneck lies.  My install rights on the work PC are very  
restricted, so I'm using CygWin via XLiveCD, which I have copied onto  
the hard drive to speed it up.

http://xlivecd.indiana.edu/

This poor performance when using GTKAgg isn't really a problem - I'll  
code a command line switch to change to the GTK backend for the few  
times I need remote access.  I'm reporting it just in case one of the  
developers thinks it could be useful to troubleshoot, in case it  
highlights a problem in the code.  I also want to note that the GTK  
backend is useful to some people, and hope that it will continue to  
be supported (I seem to recall one mention that it was little used).

Thanks for matplotlib.

Kevin Horton
Ottawa, Canada

I had the same problem today, and solved it by using
matplotlib-0.87.2.win32-py2.4.exe


On Wed, 2006-09-06 at 15:06 -0500, Ryan Krauss wrote:
> I am trying to install matplotlib on my office Windows computer.  I
> have installed the following:
> python-2.4.3.msi
> numpy-1.0b5.win32-py2.4.exe
> scipy-0.5.1.win32-py2.4.exe
> matplotlib-0.87.5.win32-py2.4.exe
> 
> on a completely fresh install.
> 
> I am getting the following message:
> H:\>python
> Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import pylab
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "C:\Python24\Lib\site-packages\pylab.py", line 1, in ?
>     from matplotlib.pylab import *
> ImportError: No module named matplotlib.pylab
> >>> import matplotlib
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ImportError: No module named matplotlib
> 
> What am I doing wrong?
> 
> Thanks,
> 
> Ryan
> 
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
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> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> 

Hi,

I installed matplotlib for winXP, and when I try to import pylab I get
this error:

>>> from pylab import *

Traceback (most recent call last):
  File "<pyshell#0>", line 1, in -toplevel-
    from pylab import *
  File "C:\Python24\Lib\site-packages\pylab.py", line 1, in -toplevel-
    from matplotlib.pylab import *
  File "C:\Python24\Lib\site-packages\matplotlib\pylab.py", line 196, in
-toplevel-
    import cm
  File "C:\Python24\Lib\site-packages\matplotlib\cm.py", line 5, in
-toplevel-
    import colors
  File "C:\Python24\Lib\site-packages\matplotlib\colors.py", line 33, in
-toplevel-
    from numerix import array, arange, take, put, Float, Int, where, \
  File "C:\Python24\Lib\site-packages\matplotlib\numerix\__init__.py",
line 60, in -toplevel-
    from Numeric import *

I'm using matplotlib-0.87.2.win32-py2.4.exe

Does anyone know what I'm doing wrong?

Thanks!

Charlie Moad wrote:
> Try the ones I added to the link above.  I already had a mpl build on
> sf.  Numpy is also at the link now.

Thanks Charlie. These seem to work, on the simplest of scripts, anyway. 
Did you build the wxPython accelerator into it?

-Chris





-- 
Christopher Barker, Ph.D.
Oceanographer
                                     		
NOAA/OR&R/HAZMAT         (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chr...@no...

I just built the latest on my Linux box, and noticed that it didn't find 
  the wxPython headers. I figured out what to do but I have the 
following suggestions:

1) at the very least, make the message more useful. I've enclosed a diff 
  to setupext.py that adds some more text.

2) It wouldn't be too hard to make it a bit smarter about finding the 
right wx-config. wxPython does not install it to a dir on the PATH by 
default. In my case, I have it there from other wx development installs. 
  The right wx-config, on my machine, is in:

/usr/lib/wxPython-2.6.1.0-gtk2-unicode/bin/wx-config

by checking the wxPython version installed, you should be able to find 
it. Or you could use "locate", which is how I found it. I don't know how 
ubiquitous locate is on *nix systems, however.

locate "*wxPython-2.6.3.0*wx-config"

3) Re-do the wxAgg back-end to not need any compiled code! -- one of 
these days....

-Chris




-- 
Christopher Barker, Ph.D.
Oceanographer
                                     		
NOAA/OR&R/HAZMAT         (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chr...@no...

I am trying to install matplotlib on my office Windows computer.  I
have installed the following:
python-2.4.3.msi
numpy-1.0b5.win32-py2.4.exe
scipy-0.5.1.win32-py2.4.exe
matplotlib-0.87.5.win32-py2.4.exe

on a completely fresh install.

I am getting the following message:
H:\>python
Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pylab
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "C:\Python24\Lib\site-packages\pylab.py", line 1, in ?
    from matplotlib.pylab import *
ImportError: No module named matplotlib.pylab
>>> import matplotlib
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: No module named matplotlib

What am I doing wrong?

Thanks,

Ryan

Try the ones I added to the link above.  I already had a mpl build on
sf.  Numpy is also at the link now.

On 9/6/06, Christopher Barker <Chr...@no...> wrote:
> Charlie Moad wrote:
> > I just uploaded "working" (at least for me)
> > versions to sourceforge again.
>
> Charlie,
>
> What are your plans for an OS-X build? Is it time?
>
> We'd need a new numpy build too -- that I could do.
>
> -Chris
>
>
>
> --
> Christopher Barker, Ph.D.
> Oceanographer
>
> NOAA/OR&R/HAZMAT         (206) 526-6959   voice
> 7600 Sand Point Way NE   (206) 526-6329   fax
> Seattle, WA  98115       (206) 526-6317   main reception
>
> Chr...@no...
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

Charlie Moad wrote:
> I just uploaded "working" (at least for me)
> versions to sourceforge again.

Charlie,

What are your plans for an OS-X build? Is it time?

We'd need a new numpy build too -- that I could do.

-Chris



-- 
Christopher Barker, Ph.D.
Oceanographer
                                     		
NOAA/OR&R/HAZMAT         (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chr...@no...

Thanks alot, everything seems to be ok now! (with numpy 1.0b5)
-sven

Charlie Moad schrieb:
> Sorry all for the error.  I just uploaded "working" (at least for me)
> versions to sourceforge again.  For those who are sicking of playing
> with mirrors here is a direct download.  Don't expect this link to be
> good for a long time though.
> 
> http://euclid.uits.iupui.edu/mplfiles/
> 
> - Charlie
> 
> On 9/6/06, Charlie Moad <cw...@gm...> wrote:
>> The source error must of propagated to those builds.  I will post new
>> ones shortly.
>>
>> On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
>> > Well the thread on the devel list that I referred to explicitly has the
>> > win32 exe in its title ("Missing __init__.py in
>> > matplotlib-0.87.5.win32-py2.4.exe ?") . The starting post there pretty
>> > much says it all.
>> >
>> > There's also a recent post on the numpy list that sounds like it's
>> maybe
>> > the same problem (quote):
>> > """
>> > Is there a compatible matplotlib as well?  I was o.k. with mpl from
>> > enthought until I switched numerix to numpy.  That made mpl unhappy.
>> > I downloaded 0.87.5 but I broke something in the process because now
>> > even switching back to Numeric doesn't make mpl happy.
>> > """
>> >
>> > Thanks,
>> > Sven
>> >
>> > Charlie Moad schrieb:
>> > > That error was relating to the source release.  Can you please post
>> > > your error for the binary?
>> > >
>> > > On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
>> > >> Charlie Moad schrieb:
>> > >> > Minor rev bump for numpy 1.0b5 compatibility.  This release should
>> > >> > remain compatible with future 1.0 releases of numpy.
>> > >> >
>> > >>
>> > >> I keep running into the ImportError problem described on the
>> devel list,
>> > >> with the win32 2.4 binary (exe). Is that still just a case of
>> waiting
>> > >> for the mirrors to update, or is there a deeper problem? Are there
>> > >> alternative download links? How to tell whether it's the "right"
>> binary,
>> > >> since version numbers are the same?
>> > >>
>> > >> Thanks for your help,
>> > >> Sven
>> > >>
>> > >
>> >
>> >
>>
> 

Esdras Caleb wrote:

>i see the tutorial but only do plot dont plot the points it do a
>interpolation in the opints and give a line or points folloing the line...
>someone can say to me hoy only draw points?

It sounds like you want to specify that the plot command should use a marker
other than line, which is the default.

For instance if you have been doing
plot(x,y)  

and getting a line, then try doing this instead

plot(x,y,'.')  

to get unconnected dots.
You can use a variety of markers; there's a list in the pylab 
documentation somewhere.

Hope this helps,
Vicki Laidler
 

Sorry all for the error.  I just uploaded "working" (at least for me)
versions to sourceforge again.  For those who are sicking of playing
with mirrors here is a direct download.  Don't expect this link to be
good for a long time though.

http://euclid.uits.iupui.edu/mplfiles/

- Charlie

On 9/6/06, Charlie Moad <cw...@gm...> wrote:
> The source error must of propagated to those builds.  I will post new
> ones shortly.
>
> On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
> > Well the thread on the devel list that I referred to explicitly has the
> > win32 exe in its title ("Missing __init__.py in
> > matplotlib-0.87.5.win32-py2.4.exe ?") . The starting post there pretty
> > much says it all.
> >
> > There's also a recent post on the numpy list that sounds like it's maybe
> > the same problem (quote):
> > """
> > Is there a compatible matplotlib as well?  I was o.k. with mpl from
> > enthought until I switched numerix to numpy.  That made mpl unhappy.
> > I downloaded 0.87.5 but I broke something in the process because now
> > even switching back to Numeric doesn't make mpl happy.
> > """
> >
> > Thanks,
> > Sven
> >
> > Charlie Moad schrieb:
> > > That error was relating to the source release.  Can you please post
> > > your error for the binary?
> > >
> > > On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
> > >> Charlie Moad schrieb:
> > >> > Minor rev bump for numpy 1.0b5 compatibility.  This release should
> > >> > remain compatible with future 1.0 releases of numpy.
> > >> >
> > >>
> > >> I keep running into the ImportError problem described on the devel list,
> > >> with the win32 2.4 binary (exe). Is that still just a case of waiting
> > >> for the mirrors to update, or is there a deeper problem? Are there
> > >> alternative download links? How to tell whether it's the "right" binary,
> > >> since version numbers are the same?
> > >>
> > >> Thanks for your help,
> > >> Sven
> > >>
> > >
> >
> >
>

>>>>> "Esdras" == Esdras Caleb <ach...@gm...> writes:

    Esdras> i see the tutorial but only do plot dont plot the points
    Esdras> it do a interpolation in the opints and give a line or
    Esdras> points folloing the line...  someone can say to me hoy
    Esdras> only draw points?  PS: sorry john i dont see...

As I said before offlist, the 2nd example in the tutorial with a
figure entitled "Using format strings" covers this.

You will notice that the plot there *does not* have a line connecting
the markers.  See also the documentation for plot.  Basically, you
want to set a line marker in the plot format string

plot(x, y, '-')   # a solid line connecting the data points
plot(x, y, 'o')   # circle markers, no solid line
plot(x, y, 's')   # square markers, no solid line
plot(x, y, '-o')  # circle markers, with connecting solid line

i see the tutorial but only do plot dont plot the points it do a
interpolation in the opints and give a line or points folloing the line...
someone can say to me hoy only draw points?
PS: sorry john i dont see...

2006/9/1, Esdras Caleb <ach...@gm...>:

> i see but when i put my point every time they are convered by aproximation
> in one line no in one expiremintal grafic..
>
> 2006/9/1, John Hunter < jdh...@ac...>:
>
> > >>>>> "Esdras" == Esdras Caleb < ach...@gm...> writes:
> >
> >     Esdras> no i gess i not clear i wnt draw_poits not plot a
> >     Esdras> line. How i do it? when i plot the array the result is a
> >     Esdras> line not a goup of poits like must be...
> >
> > I see -- take a look at the tutorial
> >
> > http://matplotlib.sourceforge.net/tutorial.html
> >
> > JDH
> >
>
>

The source error must of propagated to those builds.  I will post new
ones shortly.

On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
> Well the thread on the devel list that I referred to explicitly has the
> win32 exe in its title ("Missing __init__.py in
> matplotlib-0.87.5.win32-py2.4.exe ?") . The starting post there pretty
> much says it all.
>
> There's also a recent post on the numpy list that sounds like it's maybe
> the same problem (quote):
> """
> Is there a compatible matplotlib as well?  I was o.k. with mpl from
> enthought until I switched numerix to numpy.  That made mpl unhappy.
> I downloaded 0.87.5 but I broke something in the process because now
> even switching back to Numeric doesn't make mpl happy.
> """
>
> Thanks,
> Sven
>
> Charlie Moad schrieb:
> > That error was relating to the source release.  Can you please post
> > your error for the binary?
> >
> > On 9/6/06, Sven Schreiber <sve...@gm...> wrote:
> >> Charlie Moad schrieb:
> >> > Minor rev bump for numpy 1.0b5 compatibility.  This release should
> >> > remain compatible with future 1.0 releases of numpy.
> >> >
> >>
> >> I keep running into the ImportError problem described on the devel list,
> >> with the win32 2.4 binary (exe). Is that still just a case of waiting
> >> for the mirrors to update, or is there a deeper problem? Are there
> >> alternative download links? How to tell whether it's the "right" binary,
> >> since version numbers are the same?
> >>
> >> Thanks for your help,
> >> Sven
> >>
> >
>
>

Hi!  (Background: I'm on a Mac G4 running OS 10.4.7, "Python 2.4.3 (#1, 
Apr  7 2006, 10:54:33) [GCC 4.0.1 (Apple Computer, Inc. build 5250)] on 
darwin", matplotlib version 0.87.4.  I'm trying to solve some x-axis 
tick labeling problems I'm having using plot_date; I'm toying with the 
example date_demo_convert.py to try to learn what changes have what 
effect.  I have the folder MPL_examples on my Desktop, and am running my 
modifications from a terminal therein.)   In the terminal, I launch 
python, import matplotlib, type help(matplotlib.<matplotlib module 
member>) (it doesn't seem to matter which member I request help on) and 
instead of getting the doc displayed in the terminal, a new GUI instance 
of python is launched and displays the following window:



Nothing happens in the terminal, so I try to quit this new instance of 
python from the menu bar, and the terminal prints:

"Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site.py", 
line 327, in __call__
    import pydoc
  File 
"/Library/Frameworks/Python.framework/Versions/2.4//lib/python2.4/pydoc.py", 
line 57, in ?
    from collections import deque
ImportError: cannot import name deque"

the dock says the new instance of python is still running, and I have to 
<ctrl>-c in the terminal to terminate that new instance (which also 
terminates
the original non-GUI instance of python; if instead of trying to quit 
from the menu bar, I go straight to the terminal and type <ctrl>-c, I 
can terminate the new python instance without getting the exception 
traceback, but the terminal instance of python still quits).

Now, as if this all weren't strange enough, here's the kicker: all this 
_only_ seems to happen if I try to get help on matplotlib members when 
I'm running python from within the MPL_examples directory - if I do 
python, import matplotlib, help(matplotlib.<module member>) in a 
terminal based in another directory, I get the expected behavior, i.e., 
a text printout of the member's doc!  (One thing I haven't tried, 'cause 
it doesn't _seem_ like it should make a difference, is placing the 
MPL_examples directory someplace different and then repeating the 
experiment.)

Is this a "bug"?  Should I file a bug report?

DG