[Numpy-discussion] problem: I get an array that doesn't have a length

[Christopher Barker]

Pierre GM wrote:
>> It didn't sound like the OP wanted that. I suspect that what is wanted
>> if for to always be a 1-d array (i.e. vector). To do that, I'd do:
> 
> I beg to differ: your option is equivalent to (and I suspect a bit slower 
> than) atleast_1d, which is what the OP complained about...

There is a difference, but I don't know what the OP wanted.

my method (N.asarray(a, dtype-N.float).reshape((-1,))

will ALWAYS create a 1-d array, even if the original is greater than 1-d

atleast_1d will let an n-d array pass through. It also doesn't look like 
you can specify a data type with atleast_1d.

I don't think my approach is slower, as it handles the conversion to 
float, and reshape doesn't copy the data if it doesn't need to. But I 
doubt speed makes any difference here anyway.


-CHB





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