Description Usage Arguments Value Author(s) See Also Examples

Finds the non-zero entries of a matrix in the most efficient manner. Not sure there's much more to say here.

1 2 3 4 5 6 7 8 9 10 | ```
whichNonZero(x, ...)
## S4 method for signature 'dgTMatrix'
whichNonZero(x, ...)
## S4 method for signature 'dgCMatrix'
whichNonZero(x, ...)
## S4 method for signature 'ANY'
whichNonZero(x, BPPARAM = SerialParam(), ...)
``` |

`x` |
A numeric matrix-like object, usually sparse in content if not in representation. |

`...` |
For the generic, additional arguments to pass to the specific methods. For the methods, additional arguments that are currently ignored. |

`BPPARAM` |
A BiocParallelParam object controlling how parallelization should be performed.
only used when |

A list containing `i`

, an integer vector of the row indices of all non-zero entries;
`j`

, an integer vector of the column indices of all non-zero entries;
and `x`

, a numeric vector of the values of the non-zero entries.

Aaron Lun

`which`

, obviously.

1 2 3 | ```
x <- Matrix::rsparsematrix(1e6, 1e6, 0.000001)
out <- whichNonZero(x)
str(out)
``` |

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