[SciPy-user] meshgrid

[Nils Wagner]

Bill Baxter wrote:
> Is that new? I don't have a meshgrid function in my scipy 0.4.9.
>
> >>> from scipy import *
> >>> meshgrid
> Traceback (most recent call last):
>   File "<input>", line 1, in ?
> NameError: name 'meshgrid' is not defined
> >>> import scipy
> >>> scipy.__version__
> '0.4.9'
>
> mgrid works though:
>     numpy.mgrid[-2:2:10j, -1:1:10j].
>
> --bb
>
> On 7/5/06, *Nils Wagner* <nwagner at iam.uni-stuttgart.de 
> <mailto:nwagner at iam.uni-stuttgart.de>> wrote:
>
>     Hi all,
>
>     Is it intended that the shape of the input vectors xcoor, ycoor is
>     modified ?
>
>     from scipy import *
>     xcoor=linspace(-2,2,10)
>     ycoor=linspace(-1,1,10)
>     print shape(xcoor)
>     print shape(ycoor)
>     X1,Y1 = meshgrid(xcoor,ycoor)
>     print shape(xcoor)
>     print shape(ycoor)
>
>
>     Output
>
>     (10,)
>     (10,)
>     (1, 10)
>     (10, 1)
>
>     Nils
>
> ------------------------------------------------------------------------
>
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>   
Sorry it belongs to numpy (see below numpy.lib.function_base) , but here 
I get

 >>> from scipy import *
 >>> meshgrid
<function meshgrid at 0x2aaaace9bc08>


 >>> scipy.__version__
'0.5.0.2034'

Help on function meshgrid in module numpy.lib.function_base:

meshgrid(x, y)
    For vectors x, y with lengths Nx=len(x) and Ny=len(y), return X, Y
    where X and Y are (Ny, Nx) shaped arrays with the elements of x
    and y repeated to fill the matrix

    EG,

      [X, Y] = meshgrid([1,2,3], [4,5,6,7])

       X =
         1   2   3
         1   2   3
         1   2   3
         1   2   3


       Y =
         4   4   4
         5   5   5
         6   6   6
         7   7   7