norm2 {SpatioTemporal} | R Documentation |
dotProd
computes the inner (or dot/scalar) product between two
vectors.
norm2
computes the squared 2-norm of all the elements in a matrix or
vector.
If the vectors are of unequal length dotProd
will give a warning and
then truncates the longer vector, discarding any excess elements before the
computations.
norm2(v1) dotProd(v1, v2)
v1, v2 |
Two vectors |
dotProd
returns the inner product of v1 and v2. norm2
returns the squared 2-norm of all elements in v1.
Johan Lindstrom
Other basic linear algebra: blockMult
,
crossDist
, makeCholBlock
,
sumLogDiag
##Create two vectors of equal length v1 <- rnorm(10) v2 <- rnorm(10) ##compute the inner product between the vectors dotProd(v1,v2) ##or sum(v1*v2) ##compute the square 2-norm of v1 norm2(v1) ##or dotProd(v1,v1) ##or sum(v1*v1) ##If the vectors are of unequal length the longer vector ##gets truncated (with a warning). dotProd(v1,c(v2,2))