On Mon, 10 Sep 2007 11:38:50 -0700, Tim wrote:
> How do I memcpy from a pointer to an array of floats in python?
>
> I get errors: NameError: global name 'row' is not defined
Well than the (global) name `row` is not defined. Quite clear message,
isn't it? ;-)
> I want to be able to get the row[i] array element. In C I would
> normally place the address of row as the first argument.
>
> cdll.msvcrt.memcpy( row, pData, 256 )
>
>
> If I define row as the following I also get the following error:
>
> row = ones( TOTAL_PARAMETER_ENTRIES, dtype=float )
>
> ArgumentError: argument 1: <type 'exceptions.TypeError'>: Don't know
> how to convert parameter 1
You don't give enough information so we have to guess. For example I
guess the `ones()` function comes from one of the packages `numeric`,
`numarray` or `numpy`!?
This function returns a Python object. You can't use arbitrary Python
objects with `ctypes`. `memcpy` expects a pointer not an object.
Ciao,
Marc 'BlackJack' Rintsch
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