print.RdPrinting (non-zero elements) of sparse matrices and summarizing the sparsity structure thereof.
# S4 method for spam
print(x, ...)
# S4 method for spam
summary(object, ...)matrix of class spam or spam.chol.method.
matrix of class spam or spam.chol.method.
any other arguments passed to print.default.
If the non-standard argument minimal is set to FALSE,
an extended spam print is available with logical argument rowpointer
to print rowpointers, and zerosymbol defining the character
to display the zero element.
NULL for print, because the information is printed with cat there
is no real need to pass any object back.
A list containing the non-zero elements and the density for
summary
for class spam.
A list containing the non-zero elements of the factor, the density and
the fill-in for summary for class spam.chol.NgPeyton.
getOption('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.
display or image for a graphical visualization;
spam.options
set.seed(13)
smat <- spam_random(8)
par(mfcol=c(1,2),pty='s')
options(spam.printsize=1000)
print(smat)
#> [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8]
#> [1,] 0 0 0 1 1 1 1 1
#> [2,] 1 1 1 0 0 0 0 0
#> [3,] 0 0 0 1 1 0 1 1
#> [4,] 1 0 0 0 0 1 0 0
#> [5,] 1 0 1 1 1 1 0 1
#> [6,] 0 0 0 1 0 0 0 0
#> [7,] 0 0 0 0 1 1 1 1
#> [8,] 0 1 1 0 1 0 1 1
#> Class 'spam' (32-bit)
options(spam.printsize=10)
print(smat)
#> [1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
#> Class 'spam' (32-bit)
summary(smat)
#> Matrix object of class 'spam' of dimension 8x8,
#> with 30 (row-wise) nonzero elements.
#> Density of the matrix is 46.9%.
#> Class 'spam' (32-bit)
summary(smat)$nnz
#> [1] 30
smat@entries[1:5] <- 0
print(smat, minimal = FALSE)
#> Matrix of dimension 8x8 with (row-wise) nonzero elements:
#> 1 2 3 4 5 6 7 8
#> ----------------
#> 1|
#> Warning: one argument not used by format '%1.0f'
#> ' ' ' 0 0 0 0 0
#> 2|
#> Warning: one argument not used by format '%1.0f'
#> 1 1 1 ' ' ' ' '
#> 3|
#> Warning: one argument not used by format '%1.0f'
#> ' ' ' 1 1 ' 1 1
#> 4|
#> Warning: one argument not used by format '%1.0f'
#> 1 ' ' ' ' 1 ' '
#> 5|
#> Warning: one argument not used by format '%1.0f'
#> 1 ' 1 1 1 1 ' 1
#> 6|
#> Warning: one argument not used by format '%1.0f'
#> ' ' ' 1 ' ' ' '
#> 7|
#> Warning: one argument not used by format '%1.0f'
#> ' ' ' ' 1 1 1 1
#> 8|
#> Warning: one argument not used by format '%1.0f'
#> ' 1 1 ' 1 ' 1 1
#> class: spam (32-bit)
#> Class 'spam' (32-bit)
print(smat, minimal = FALSE, rowpointer = TRUE)
#> Matrix of dimension 8x8 with (row-wise) nonzero elements,
#> number left of the vertical bars denote the respective rowpointer:
#> 1 2 3 4 5 6 7 8
#> ----------------
#> 1|
#> Warning: one argument not used by format '%1.0f'
#> ' ' ' 0 0 0 0 0
#> 6|
#> Warning: one argument not used by format '%1.0f'
#> 1 1 1 ' ' ' ' '
#> 9|
#> Warning: one argument not used by format '%1.0f'
#> ' ' ' 1 1 ' 1 1
#> 13|
#> Warning: one argument not used by format '%1.0f'
#> 1 ' ' ' ' 1 ' '
#> 15|
#> Warning: one argument not used by format '%1.0f'
#> 1 ' 1 1 1 1 ' 1
#> 21|
#> Warning: one argument not used by format '%1.0f'
#> ' ' ' 1 ' ' ' '
#> 22|
#> Warning: one argument not used by format '%1.0f'
#> ' ' ' ' 1 1 1 1
#> 26|
#> Warning: one argument not used by format '%1.0f'
#> ' 1 1 ' 1 ' 1 1
#> class: spam (32-bit)
#> Class 'spam' (32-bit)
smat@rowpointers
#> [1] 1 6 9 13 15 21 22 26 31
print_nnzpos(smat)
#> Matrix of dimension 8x8 with (row-wise) nonzero elements:
#> 1 2 3 4 5 6 7 8
#> ------------------------
#> 1|
#> Warning: one argument not used by format '%2.0f'
#> ' ' ' 1 2 3 4 5
#> 2|
#> Warning: one argument not used by format '%2.0f'
#> 6 7 8 ' ' ' ' '
#> 3|
#> Warning: one argument not used by format '%2.0f'
#> ' ' ' 9 10 ' 11 12
#> 4|
#> Warning: one argument not used by format '%2.0f'
#> 13 ' ' ' ' 14 ' '
#> 5|
#> Warning: one argument not used by format '%2.0f'
#> 15 ' 16 17 18 19 ' 20
#> 6|
#> Warning: one argument not used by format '%2.0f'
#> ' ' ' 21 ' ' ' '
#> 7|
#> Warning: one argument not used by format '%2.0f'
#> ' ' ' ' 22 23 24 25
#> 8|
#> Warning: one argument not used by format '%2.0f'
#> ' 26 27 ' 28 ' 29 30
#> class: spam (32-bit)
#> Class 'spam' (32-bit)