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Справка Scilab >> Sparse Matrix > Sparse Matrix Manipulation > spzeros

spzeros

sparse zero matrix

Calling Sequence

sp=spzeros(nrows,ncols)
sp=spzeros(A)

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 — единичная матрица
  • speye — sparse identity matrix
  • spones — sparse matrix
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Last updated:
Thu Oct 02 14:01:07 CEST 2014