Programmer Guide/Command Reference/EVAL/dist: Difference between revisions
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Revision as of 17:31, 18 November 2010
dist
Calculate the distance matrix for all elements in the vector x or for all row vectors in the matrix x. I.e. d(i,j) = distance (x[i,*], x[j,*]). This is a subcommand of the EVAL command.
Usage:
dist(x)
Return Type:
matrix
Calculate the Euclidean distance from x to y. Both arguments must be either scalars or vectors.
Usage:
dist(x, y)
Return Type:
scalar
Calculate the Euclidean distances between all elements of xv or all row vectors of xm to the value ys or the vector yv. The result is a vector with x[!nrow] elements.
Usage:
dist(xv,ys)
dist(xm, yv)
Return Type:
vector
