spzeros

Arguments

nrows

integer (number of rows)

ncols

integer (number os columns)

A

sparse matrix

sp

sparse zero matrix

Description

sp=spzeros(nrows,ncols) returns a sparse zero matrix sp with nrows rows, ncols columns. (Equivalent to sparse([],[],[nrow,ncols]))

sp=spzeros(A) returns a sparse zero matrix with same dimensions as A. If [m,n]=size(A), spzeros(m,n) and spzeros(A) are equivalent. In particular spzeros(3) is not equivalent to spzeros(3,3).

Examples

m=spzeros(2,2)
a=rand(10,12);
m=spzeros(a)
sum(spzeros(1000,1000))

See also

• sparse — sparse matrix definition
• full — sparse to full matrix conversion
• eye — identity matrix
• speye — sparse identity matrix
• spones — sparse matrix