startsToRanges: Row Numbers of Start Rows to From/To Row Ranges

In KWB-R/kwb.utils: General Utility Functions Developed at KWB

Row Numbers of Start Rows to From/To Row Ranges

Description

A vector of row numbers is transformed to a data frame describing row ranges by numbers of first and last rows

Usage

startsToRanges(starts, lastStop, startOffset = 1, stopOffset = 1)

Arguments

starts	integer vector of start indices
lastStop	integer value of the last stop index
startOffset	integer offset applied to the starts
stopOffset	integer offsets applied to the ends

Value

data frame with columns from and to

Examples

starts <- c(1, 10, 20, 35)

ok <- identical(
  startsToRanges(starts, lastStop = 50), 
  data.frame(
    from = c(2, 11, 21, 36),
    to = c(9, 19, 34, 50)
  )
)
  
ok <- ok && identical(
  startsToRanges(starts, lastStop = 55, startOffset = 2, stopOffset = 2), 
  data.frame(
    from = c(3, 12, 22, 37),
    to = c(8, 18, 33, 55)
  )
)
  
ok
  

KWB-R/kwb.utils documentation built on April 1, 2024, 7:12 a.m.