Syntax
- float[] sortRowIndices(array)
Parameters
- array—(float[], string[])Array to be sorted.
Description
The sortRowIndices function returns the indices of sorted rows in array. The size of the returned index array equals the number of rows of array. Duplicate rows are sorted in the order of appearance.
array = [4,0,1;
2,1,9;
1,3,0;
2,1,0]
sortRowIndices(array) [2,3,1,0]
array[sortRowIndices(array),0:nColumns(array)-1] [1,3,0;
2,1,0;
2,1,9;
4,0,1]
Related
Example
Sort rows by column precedence
const a = [4,0,1;
2,1,9;
1,3,0;
2,1,0]
sortRows(a,columnPrecedence) = a[sortRowIndices(a[0:nRows(a)-1,columnPrecedence]),0:nColumns(a)-1]
// sort by column 1
const b = sortRows(a,1) // [4,0,1;
// 2,1,9;
// 2,1,0;
// 1,3,0]
// sort by column 1, then column 0, then column 2
const c = sortRows(a,[1,0,2]) // [4,0,1;
// 2,1,0;
// 2,1,9;
// 1,3,0]