[you probably should have started a new thread instead of replying to
another one...]

Giorgio Luciano schrieb:

>  In the old file I created a matrix  on the fly. I know that Numpy  and 
>  python cannot do that so I found a workaround

I'm not sure what you mean what numpy cannot do, but...

>  here's the code
>  
>  lev2=empty((1,h))

<calcs> 

>  lev=lev2[1:,]


>  So
>  First I create the empty matrix
>  Secon perform the calculation
>  Third take the matrix and exclude the first line since it has "dummy" 
...
> 
>  everything works fine.. but is this really necessary ? could not an empy 
>  just just be "really empty" ?
>  Thanks for the answers
>  
> 

you can use lev2 = empty((0,h)) as a starting point for adding rows, it
works and then nothing "dummy"-like will be in lev2

hth,
sven

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