rowImaxLast

rowImaxLast(args…)

Return a vector of the same length as the number of rows of the argument. The vector contains the index of the element with the largest value in X in each row. If there are multiple elements with the identical largest value, return the index of the first element from the right.

Please see rowFunctions for the parameters and calculation rules.

A vector whose length is the same as the number of rows in the input arguments.

m=matrix([4.5 2.6 1.5 3.2, 1.5 4.8 5.9 1.7, 4.9 2.0 NULL 5.5])
rowImaxLast(m)
// output: [2,1,1,2]

trades = table(10:0,`time`sym`p1`p2`p3`p4`p5`vol1`vol2`vol3`vol4`vol5,[TIMESTAMP,SYMBOL,DOUBLE,DOUBLE,DOUBLE,DOUBLE,DOUBLE,INT,INT,INT,INT,INT])
insert into trades values(2022.01.01T09:00:00, `A, 33.2, 33.8, 33.6, 33.3, 33.1, 200, 180, 180, 220, 200)
insert into trades values(2022.01.01T09:00:00, `A, 33.1, 32.8, 33.2, 34.3, 32.3, 150, 280, 190, 100, 220)
insert into trades values(2022.01.01T09:00:00, `A, 31.2, 32.6, 33.6, 35.3, 34.5, 220, 160, 130, 100, 110)
insert into trades values(2022.01.01T09:00:00, `A, 30.2, 32.5, 33.6, 35.3, 34.1, 200, 180, 150, 140, 120)
insert into trades values(2022.01.01T09:00:00, `A, 33.2, 33.8, 33.6, 33.3, 33.1, 180, 160, 160, 180, 200)

select rowAt(matrix(p1, p2, p3, p4, p5), rowImaxLast(vol1, vol2, vol3, vol4, vol5)) as price from trades
/* output:
price
33.3
32.8
31.2
30.2
33.1
*/

Related function: rowImax