findEqualGreater {xcms} | R Documentation

## Find values in sorted vectors

### Description

Find values in sorted vectors.

### Usage

    findEqualGreater(x, value)
    findEqualLess(x, value)
    findEqualGreaterM(x, values)
    findRange(x, values, NAOK = FALSE)

### Arguments

`x` | numeric vector sorted in increasing order
`value` | value to find in `x`
`values` | numeric values to find in `x`
`NAOK` | don't check for NA values in `x`

### Details

`findEqualGreater` finds the index of the first value in `x` that is equal or greater than `value`. `findEqualLess` does same except that it finds equal or less. `findEqualGreaterM` creates an index of a vector by finding specified values. `findRange` locates the start and stop indicides of a range of two `x` values.

The only things that save time at this point are `findeEqualGreaterM` (when the length of values approaches the lenght of x) and `findRange` (when `NAOK` is set to TRUE). They run in log(N) and N time, respectively.

### Value

An integer vector with the position(s) of the values(s).

### Author(s)

Colin A. Smith, csmith@scripps.edu

[Package xcms version 3.9.1 Index]