# vecseq: Vectorized Sequences In bit: Classes and Methods for Fast Memory-Efficient Boolean Selections

## Description

`vecseq` returns concatenated multiple sequences

## Usage

 `1` ```vecseq(x, y = NULL, concat = TRUE, eval = TRUE) ```

## Arguments

 `x` vector of sequence start points `y` vector of sequence end points (if `is.null(y)` then `x` are taken as endpoints, all starting at 1) `concat` vector of sequence end points (if `is.null(y)` then `x` are taken as endpoints, all starting at 1) `eval` vector of sequence end points (if `is.null(y)` then `x` are taken as endpoints, all starting at 1)

## Details

This is a generalization of `sequence` in that you can choose sequence starts other than 1 and also have options to no concat and/or return a call instead of the evaluated sequence.

## Value

if `concat==FALSE` and `eval==FALSE` a list with n calls that generate sequences
if `concat==FALSE` and `eval==TRUE ` a list with n sequences
if `concat==TRUE ` and `eval==FALSE` a single call generating the concatenated sequences
if ```concat==TRUE ``` and `eval==TRUE ` an integer vector of concatentated sequences

## Author(s)

Angelo Canty, Jens Oehlschlägel

`:`, `seq`, `sequence`
 ```1 2 3 4 5 6 7``` ``` sequence(c(3,4)) vecseq(c(3,4)) vecseq(c(1,11), c(5, 15)) vecseq(c(1,11), c(5, 15), concat=FALSE, eval=FALSE) vecseq(c(1,11), c(5, 15), concat=FALSE, eval=TRUE) vecseq(c(1,11), c(5, 15), concat=TRUE, eval=FALSE) vecseq(c(1,11), c(5, 15), concat=TRUE, eval=TRUE) ```