positionToIndex {useful} | R Documentation |
positionToIndex
Description
Given row and column positions calculate the index.
Usage
positionToIndex(row, col, nrow = max(row))
Arguments
row |
Vector specifying row positions |
col |
Vector specifying column positions |
nrow |
The number of rows in the matrix |
Details
With row and column positions this computes the index, starting at (1,1) working down rows then across columns.
Value
A vector of indices
Author(s)
Jared P. Lander
Examples
positionToIndex(1, 2, 2)
positionToIndex(row=c(1, 1, 2, 1, 3), col=c(1, 2, 2, 3, 3), nrow=3)
positionToIndex(rep(1:4, 4), rep(1:4, each=4), nrow=4)
positionToIndex(rep(c(1, 3, 5), 3), rep(1:3, each=3), nrow=5)
[Package useful version 1.2.6.1 Index]