Hi Bryan and Luis, thanks for your quick response! Both suggestions look
great and I learned a few things about PDL like which, whereND, and
dice_axis that I hadn't before.
Cheers,
--
Eric Wheeler
On Wed, 9 Aug 2023, Luis Mochan wrote:
>
> You could use whereND, as:
> pdl> p
You could use whereND, as:
pdl> p $target=sequence(5,10)
[
[ 0 1 2 3 4]
[ 5 6 7 8 9]
[10 11 12 13 14]
[15 16 17 18 19]
[20 21 22 23 24]
[25 26 27 28 29]
[30 31 32 33 34]
[35 36 37 38 39]
[40 41 42 43 44]
[45
moin Eric, moin list,
There may be a more elegant way to do this, but I'd use which($mask) to
feed dice_axis() of $target. Using your $mask example above:
pdl2> $mask = pdl([0,0,1,0,1,1,1,0,1,0])->slice("*1,")
pdl2> p $selected = $target->dice_axis(1, $mask->flat->which)
[
[10 11 12 13 14]
[20
Hello all!
I would like to get a diced/sliced/indexed piddle that is derived from a
larger matrix based on rows indicated by a mask.
For example, lets say I have a mask and I want to dice a matrix's rows
where the mask has a value of 1 (in any location):
pdl> p $mask =
