spam (version 0.12)

print: Printing and summarizing sparse matrices

Description

Printing (non-zero elements) of sparse matrices and summarizing the sparseness structure thereof.

Usage

print(x, ...)
  summary(object, ...)

Arguments

x

matrix of class spam or spam.chol.method.

object

matrix of class spam or spam.chol.method.

...

any other arguments passed to print.default.

Value

• NULL, because the information is printed with cat there is no real need to pass any object back. We also do not see the need of defining a summary.spam class with a proper print method.

Details

.Spam$printsize determines if the sparse matrix is coerced into a matrix and the printed as an array or if only the non-zero elements of the matrix are given.

See Also

.Spam

Examples

nz <- 8
ln <- nz
smat <- spam(0,ln,ln)
smat[cbind(sample(ln,nz),sample(ln,nz))] <- 1:nz

par(mfcol=c(1,2),pty='s')
.Spam$printsize <- 1000
print(smat)
.Spam$printsize <- 10
print(smat)
summary(smat)