Re: [Visualpython-users] pylab

[Gary P. <gar...@gm...>]

PyLab is new to me, but I am familiar with pylab (matplotlib sub).  I also
strongly suspect that matplotlib is what you want.  You don't say what
platform you are on, but matplotlib is included in the Ubuntu installation
repository.  I've found the easiest way to install matplotlib on WinXP is
using the stand-alone installer on their website.   I think they offer an
"easy_install" option, but I've gotten tied up in knots with that from time
to time.

Now, since Bruce brought it up ...

One problem with "from pylab import *" is that matplotlib overwrites some
numpy functions, for example linspace().   I don't know why or how that
happened, but the two functions behave differently.  People probably expect
the numpy behavior,   but unexpectedly get the matplotlib behavior.

Perhaps PyLab does away with this conflict.  I don't know.



On Thu, Nov 19, 2009 at 4:10 PM, Bruce Sherwood <Bru...@nc...>wrote:

> After a bit of googling, the situation seems to be this:
>
> matplotlib (http://matplotlib.sourceforge.net) is a Python 2d plotting
> library
> which includes a module named pylab. I'm guessing that's what you're
> looking for.
>
> A confusing factor is that at http://www.scipy.org/PyLab there is a
> discussion
> that starts out with this:
>
> See the following post for further discussion of the difference between the
> vision for a new PyLab expressed on this page, and the existing pylab
> package
> which is part of matplotlib:
> http://www.nabble.com/pylab-td24910613.html
>
> Incidentally, the www.scipy.org/PyLab discussion makes a case for a new
> pylab to
> be invoked as "from pylab import *" which would import a bunch of stuff
> almost
> anyone doing scientific processing will need (including numpy and scipy),
> rather
> like the current situation with Visual. The essayist then says, foreseeing
> objections, "But there are so many names! Not really. from scipy import *
> brings
> in about 20 subpackages (i.e. signal such that you still need to do
> signal.ifft,
> but not scipy.signal.ifft) and only 15 new symbols."
>
> Bruce Sherwood
>
> marco bittelli wrote:
> > I am trying to install pylab for python 2.6, but I have problem finding
> > the package (even in the main Python website).
> >
> >
> >
> > Could you help me ?
> >
> >
> >
> > Marco
> >
> >
> >
> > Marco Bittelli, Ph.D.
> >
> > Department of Agro-Environmental Science and Technology
> >
> > University of Bologna, Italy
> >
> > Viale Fanin, 44.
> >
> > 40125, Bologna, Italy
> >
> > email:mar...@un... <email%3Am...@un...>
> >
> > http://www.dista.unibo.it/~bittelli<http://www.dista.unibo.it/%7Ebittelli>
>
>
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