pcds (version 0.1.4)

dimension: The dimension of a vector or matrix or a data frame

Description

Returns the dimension (i.e., number of columns) of x, which is a matrix or a vector or a data frame. This is different than the dim function in the base distribution of R, in the sense that, dimension gives only the number of columns of the argument x, while dim gives the number of rows and columns of x. dimension also works for a scalar or a vector, while dim yields NULL for such arguments.

Usage

dimension(x)

Value

Dimension (i.e., number of columns) of x

Arguments

x

A vector or a matrix or a data frame whose dimension is to be determined.

Author

Elvan Ceyhan

See Also

is.point and dim from the base distribution of R

Examples

dimension(3)
dim(3)

A<-c(1,2)
dimension(A)
dim(A)

B<-c(2,3)
dimension(rbind(A,B,A))
dimension(cbind(A,B,A))

M<-matrix(runif(20),ncol=5)
dimension(M)
dim(M)

dat.fr<-data.frame(a=A,b=B)
dimension(dat.fr)
dim(dat.fr)

dimension(c("a","b"))