The BYROW function in Google Sheets is a powerful tool that allows users to apply a specified LAMBDA function to each row of an array. This functionality enables more advanced data manipulation and processing, making it easier to perform calculations or transformations at a row level without the need for complex formulas or scripts. By utilizing BYROW, you can enhance your data analysis capabilities within spreadsheets.

Syntax

BYROW(array, LAMBDA)

• array: The range of cells or array you want to apply the LAMBDA function to.
• LAMBDA: A custom function defined using the LAMBDA keyword that will be executed for each row of the specified array.

Example #1

=BYROW(A1:C3, LAMBDA(r, SUM(r)))

This function sums each row of the range A1:C3. For instance, if A1:C3 contains values {1,2,3; 4,5,6; 7,8,9}, the result would be {6; 15; 24}.

Example #2

=BYROW(A1:A4, LAMBDA(r, MAX(r)))

In this example, the function retrieves the maximum value from each row within the range A1:A4. If A1:A4 contains values {3; 7; 2; 5}, the output would be {3; 7; 2; 5}.

Example #3

=BYROW(A1:B2, LAMBDA(r, AVERAGE(r)))

This calculation computes the average of each row in the A1:B2 range. Assuming A1:B2 holds values {4, 2; 6, 8}, the result will be {3; 7}.

Error handling

• VALUE! This error appears if the array is not valid or the LAMBDA function is missing. Ensure the parameters are set correctly.
• NAME? Occurs when the function name is misspelled or not recognized. Check for typographical errors in your formula.
• REF! Indicates a reference problem, often due to a deleted row or column in the referenced range. Verify that all references are intact.

Conclusion

In conclusion, the BYROW function significantly enhances data handling within Google Sheets by allowing users to apply custom LAMBDA functions on a row basis. This ability to simplify complex row-wise calculations can save time and improve efficiency in data analysis tasks, making it an invaluable addition to your spreadsheet toolkit.