Description Usage Arguments Details Author(s) Examples
Replacements for APL functions take and drop
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a |
Array |
b |
Vector of number of indices to take/drop. Length of |
give.indices |
Boolean, with default |
value |
elements to replace |
apltake(a,b)
returns an array of the same dimensionality as
a
. Along dimension i
, if b[i]>0
, the first
b[i]
elements are retained; if b[i]<0
, the last
b[i]
elements are retained.
apldrop(a,b)
returns an array of the same dimensionality as
a
. Along dimension i
, if b[i]>0
, the first
b[i]
elements are dropped if b[i]<0
, the last
b[i]
elements are dropped.
These functions do not drop singleton dimensions. Use drop()
if this is desired.
Robin K. S. Hankin
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