# Passing Named Range Into User Defined Function?

Dec 4, 2012Passing Named Range into User Defined Function

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Depending on time of day and computer I am sitting in front of I am using:

WinXP Pro SP2 with Excel 2003

Win7 Pro SP2 Excel 2007

Win7 Pro SP2 Excel 2010 on PC

Win7 Pro SP2 Excel 2010 on Mac Mini running Boot Camp

OSX Excel for Mac 2011

I have only tried this on Win7 Pro SP2 Excel 2007 but need it to work on all.

I enter the values 0, 1, 2 ... 89, 90 in cells A1 to A91

I select A1:A91 and name the range 'angle'

I create a user defined function:

Public function sindeg(value As Double) as Double

sindeg = sin(worksheetfunction.radians(value))

end

I want 'value' for the function in a cell to be replaced by the corresponding value in the same row (or column) in the named range 'angle'. For example (using commas as column separators). This works for Excel functions like sin, cos, radians, etc.

********** Worksheet Contents **********

A1 = 00, B1 = sin(radians(0)), C1 = sin(radians(A1)), D1 = sin(radians(angle)), E1 = sindeg(0), F1 = sindeg(A1), G1 = sindeg(angle)

A2 = 01, B2 = sin(radians(1)), C2 = sin(radians(A2)), D2 = sin(radians(angle)), E2 = sindeg(1), F2 = sindeg(A2), G2 = sindeg(angle)

A3 = 02, B3 = sin(radians(2)), C3 = sin(radians(A3)), D3 = sin(radians(angle)), E3 = sindeg(2), F3 = sindeg(A3), G3 = sindeg(angle)

......

A91 = 90, B91 = sin(radians(90)), C91 = sin(radians(A91)), D91 = sin(radians(angle)), E91 = sindeg(90), F91 = sindeg(A91), G91 = sindeg(angle)

Column A = input. Columns B, C, D, E and F all calculate the same value by row. Column G fails with a #VALUE. In row 1 the value of angle[1] = 0 therefore column D = C = B = sin(0) = 0. In row 2 angle[2] = 1 therefore B = C = D = 0.017452

How can I get the user defined function sindeg(value) in column G to accept the named range variable 'angle' like the Excel function radians(value) accepted it in column D?

This functionality should work horizontally as well as vertically. For example enter 'angle' A1 to CM1 then have sindeg(angle) filled from A2 to CM2. It should also work in the case where the named range 'angle' is a single cell.

I am sure that this is a simple variable type definition problem in my user defined function: should the input variable be defined as type Range? Or something more exotic?

The brute force approach is to have the function determine the input value by passing in the named range, working out dimensions, calculating offset between the cell the function is in and top (left) of named range, then counting down (right) to pick the correct value. However I cannot see adding all that code to EVERY function. Occam's Razor says there has to be an easier way since Excel built in functions seem to do it readily.