RE: [Bmelibpy-devel] rank function

[Didrik P. <dp...@it...>]

Le mercredi 27 juillet 2005 =E0 11:03 +0200, Dimitri D'Or a =E9crit :
> Didrik,
>=20
> What do you propose as a solution for this potential bug with "rank"?
>=20
> I frequently use "rank" to test the dimensionality of a matrix or a vec=
tor.
> Should I replace it by "len(A.shape)" or import it as Nrank?
>=20
> The second solution seems to be clearer for me. But then how do I have =
to
> import the modules?
>=20
> from scipy import *
> from scipy import rank as Nrank
> from pylab import *
>=20
> Another solution would be to import "rank" as "dim" to match the Matlab
> function name.
>=20
> Or
>=20
> from scipy import *
> from scipy import Numeric as N
> from pylab import *
>=20
> With this last import scheme, N.rank should be used to test dimensional=
ity
> while rank gives the rank of a matrix (from pylab).
>=20
> Which would be the best way to import the modules?
>=20
> Dimitri

Here is how i've solved the problem.

Considering that Matplotlib should only be used for graphical rendering
and specific functions, i have constrained the import of matplotlib
defining only the functions I need to use.

For example, in statlib :
-------------------------------------------------------------------------=
-----------------------
from scipy import *
from types import FunctionType
from pylab import find,bar,subplot,plot,hold,ishold,axis,xlabel,ylabel,ti=
tle,gca,subplots_adjust
import BMEmatlab
import warnings
-------------------------------------------------------------------------=
-----------------------

In that case, I am sure to use only the scipy rank function.

If we need both functions, I do think that importing scipy rank as dim is=
 a good idea [1]. BUT I do think
we have to go on with constrained imports of pylab functions.

As an example, here is the imports for statlib :
-------------------------------------------------------------------------=
-----------------------
from scipy import *
from scipy import rank as dim
from types import FunctionType
from pylab import find,bar,subplot,plot,hold,ishold,axis,xlabel,ylabel,ti=
tle,gca,subplots_adjust, rank
import BMEmatlab
import warnings
-------------------------------------------------------------------------=
-----------------------


Didrik


[1] If we use dim in one of the file, we need to check all the modules an=
d check that dim is used everywhere.