scalar | R Documentation |
Computes scalar products of datasets of vectors or vectorial quantities.
scalar(x,y)
## Default S3 method:
scalar(x,y)
x |
a vector or a matrix with rows considered as vectors |
y |
a vector or a matrix with rows considered as vectors |
The scalar product of two vectors is defined as:
scalar(x,y):= \sum(x_iy_i)
a numerical vector containing the scalar products of the vectors given
by x and y. If both x
and y
contain more than one
vector the function uses parallel operation like it would happen with
an ordinary product of vectors.
The computation of the scalar product implicitly applies
the cdt
transform, which implies that the scalar products
corresponding to the given geometries are returned for acomp
,
rcomp
, aplus
,
rplus
-objects. Even a useful scalar product for factors
is induced in this way.
K.Gerald v.d. Boogaart http://www.stat.boogaart.de
scalar(acomp(c(1,2,3)),acomp(c(1,2,3)))
scalar(rmult(c(1,2,3)),rmult(c(1,2,3)))
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