Applies a LAMBDA to each column and returns an array of the results. For example, if the original array is 3 columns by 2 rows, the returned array is 3 columns by 1 row.
Syntax
=BYCOL (array, lambda(column))
The BYCOL function syntax has the following arguments and parameters:
-
array An array to be separated by column.
-
lambda A LAMBDA that takes a column as a single parameter and calculates one result. The LAMBDA takes a single parameter:
-
column A column from array.
Errors
Providing an invalid LAMBDA function or an incorrect number of parameters returns a #VALUE! error called "Incorrect Parameters".
Not providing a LAMBDA function or anything but a single value returned from the LAMBDA function returns a #CALC error.
Examples
Example 1: Return the maximum value of each column
Enter the sample data into cells A1: C2, and then copy the formula into cell D4:
=BYCOL(A1:C2, LAMBDA(array, MAX(array)))
Example 2: Return the sum of the squared value of each array element in each column
Enter the sample data into cells A1: C2, and then copy the formula into cell D4:
=BYCOL(A1:C2,LAMBDA(array,SUMSQ(array)))
