breaks_on_binSize {xcms} | R Documentation

## Generate breaks for binning using a defined bin size.

### Description

Defines breaks for `binSize` sized bins for values ranging from `fromX` to `toX`.

### Usage

    breaks_on_binSize(fromX, toX, binSize)

### Arguments

`fromX` | numeric(1) specifying the lowest value for the bins.
`toX` | numeric(1) specifying the largest value for the bins.
`binSize` | numeric(1) defining the size of a bin.

### Details

This function creates breaks for bins of size `binSize`. The function ensures that the full data range is included in the bins, i.e. the last value (upper boundary of the last bin) is always equal `toX`. This however means that the size of the last bin will not always be equal to the desired bin size. See examples for more details and a comparisom to R's `seq` function.

### Value

A numeric vector defining the lower and upper bounds of the bins.

### Author(s)

Johannes Rainer

### See Also

`binYonX` for a binning function.

Other functions to define bins: `breaks_on_nBins`

### Examples

    ## Define breaks with a size of 0.13 for a data range from 1 to 10:
    breaks_on_binSize(1, 10, 0.13)
    ## The size of the last bin is however larger than 0.13:
    diff(breaks_on_binSize(1, 10, 0.13))
    ## If we would use seq, the max value would not be included:
    seq(1, 10, by = 0.13)

    ## In the next example we use binSize that leads to an additional last bin with
    ## a smaller binSize:
    breaks_on_binSize(1, 10, 0.51)
    ## Again, the max value is included, but the size of the last bin is < 0.51.
    diff(breaks_on_binSize(1, 10, 0.51))
    ## Using just seq would result in the following bin definition:
    seq(1, 10, by = 0.51)
    ## Thus it defines one bin (break) less.

[Package xcms version 3.9.1 Index]