It is not a bug in numerix; numerix is using an older version of where,

provided by numpy for compatibility with Numeric:

In [4]:numpy.where?

Type: builtin_function_or_method

Base Class: <type 'builtin_function_or_method'>

String Form: <built-in function where>

Namespace: Interactive

Docstring:

where(condition, | x, y)

The result is shaped like condition and has elements of x and y where

condition is respectively true or false. If x or y are not given,

then it is equivalent to condition.nonzero().

To group the indices by element, rather than dimension, use

transpose(where(condition, | x, y))

instead. This always results in a 2d array, with a row of indices for

each element that satisfies the condition.

In [5]:pylab.where?

Type: function

Base Class: <type 'function'>

String Form: <function where at 0xb6e2a924>

Namespace: Interactive

File:

/usr/lib/python2.4/site-packages/numpy/oldnumeric/functions.py

Definition: pylab.where(condition, x, y)

Docstring:

<no docstring>

Eric

humufr@...136... wrote:

> Hi,

>

> I think there are a bug in numerix. I was expecting the same result from

> pylab.where and numpy.where (in my matplotlibrc I have numerix define

> for numpy) but like you can see in the following example the result is

> quite different.

>

> N.

>

>

>

>

> Python 2.4.3 (#2, Apr 27 2006, 14:43:58)

> Type "copyright", "credits" or "license" for more information.

>

> IPython 0.7.3.svn -- An enhanced Interactive Python.

> ? -> Introduction to IPython's features.

> %magic -> Information about IPython's 'magic' % functions.

> help -> Python's own help system.

> object? -> Details about 'object'. ?object also works, ?? prints more.

>

> Welcome to pylab, a matplotlib-based Python environment.

> For more information, type 'help(pylab)'.

>

> In [1]: import numpy

>

> In [2]: a = numpy.arange(123)

>

> In [3]: pylab.where(a>23)

> -------------------------------------------------------------------------

>-- exceptions.TypeError Traceback (most

> recent call last)

>

> /home/humufr/<ipython console>

>

> TypeError: where() takes exactly 3 arguments (1 given)

>

> In [4]: from matplotlib import rcParams

>

> In [5]: rcPara

> rcParams rcParamsDefault

>

> In [5]: rcParams['numerix']

> Out[5]: 'numpy'

>

> In [6]: numpy.where(a>23)

> Out[6]:

> (array([ 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,

> 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49,

> 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62,

> 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75,

> 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88,

> 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101,

> 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114,

> 115, 116, 117, 118, 119, 120, 121, 122]),)

>

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