thanks.. I found today similar solution to what you say .. i.e.: 
$x->where($x < 0) .= -1

[download]

the link I already saw 2 days ago :)
Can't figure out yet one-pass solution... but at least I dont have to make it array, loop over it and then reconstruct the piddle.
thanks again

In reply to Re^2: PDL, applying function by rootcho
in thread PDL, applying function by rootcho

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