Combine lists or perform arithmetic operations on elements of lists.

1 2 3 4 |

`x` |
list |

`y` |
list ( |

`elts` |
list, numeric vectors for which to find maximum values (in parallel) ( |

`na.rm` |
logical, remove missing values? |

`pmin` |
logical, find minimum values instead of maximum ones? |

`lsub`

subtracts the elements of list `y`

from the respective ones in list `x`

. `lsum`

sums the respective elements of lists `x`

and `y`

. `pprod`

multiplies each element of list `x`

by the respective numeric value in `y`

.

`which.pmax`

takes a list of equal-length numeric vectors (or objects that can be coerced to numeric) in `elts`

and returns the index of the vector holding the maximum value at each position. If `na.rm`

is `TRUE`

, values of `NA`

are removed; if `pmin`

is `TRUE`

the function finds locations of the minimum values instead.

`lsub`

, `lsum`

and `pprod`

return lists.

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