Microsoft Office Tutorials and References
In Depth Information
This function returns an array of consecutive integers beginning with 1 and ending with the number of digits in
the value in cell A1. For example, if cell A1 contains the value 409, the LEN function returns 3 , and the array
generated by the ROW functions is
For more information about using the INDIRECT function to return this array, see
Chapter 14.
This array is then used as the second argument for the MID function. The MID part of the formula, simplified a
bit and expressed as values, is the following:
This function generates an array with three elements:
By simplifying again and adding the SUM function, the formula looks like this:
This formula produces the result of 13 .
The values in the array created by the MID function are multiplied by 1 because the MID
function returns a string. Multiplying by 1 forces a numeric value result. Alternatively,
you can use the VALUE function to force a numeric string to become a numeric value.
Notice that the formula doesn't work with a negative value because the negative sign is not a numeric value.
Also, the formula fails if the cell contains non-numeric values (such as 123A6). The following formula solves
this problem by checking for errors in the array and replacing them with zero:
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