Excel's Formula - sisman

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676 Part VI: Developing Custom Worksheet Functions Case UpperLeft.NumberFormat = “@” CELLTYPE = “Text” Case IsEmpty(UpperLeft.Value) CELLTYPE = “Blank” Case WorksheetFunction.IsText(UpperLeft) CELLTYPE = “Text” Case WorksheetFunction.IsLogical(UpperLeft.Value) CELLTYPE = “Logical” Case WorksheetFunction.IsErr(UpperLeft.Value) CELLTYPE = “Error” Case IsDate(UpperLeft.Value) CELLTYPE = “Date” Case InStr(1, UpperLeft.Text, “:”) 0 CELLTYPE = “Time” Case IsNumeric(UpperLeft.Value) CELLTYPE = “Value” End Select End Function Figure 25-1 shows the CELLTYPE function in use. Column B contains formulas that use the CELLTYPE function with an argument from column A. For example, cell B1 contains the following formula: =CELLTYPE(A1) Figure 25-1: The CELLTYPE function returns a string that describes the contents of a cell. The workbook celltype function.xlsm that demonstrates the CELLTYPE function is available on the companion CD-ROM.
A Multifunctional Function Chapter 25: VBA Custom Function Examples 677 This section demonstrates a technique that may be helpful in some situations — the technique of making a single worksheet function act like multiple functions. The following VBA custom function, named STATFUNCTION, takes two arguments — the range (rng) and the operation (op). Depending on the value of op, the function returns a value computed by using any of the following worksheet functions: AVERAGE, COUNT, MAX, MEDIAN, MIN, MODE, STDEV, SUM, or VAR. For example, you can use this function in your worksheet: =STATFUNCTION(B1:B24,A24) The result of the formula depends on the contents of cell A24, which should be a string, such as Average, Count, Max, and so on. You can adapt this technique for other types of functions. Function STATFUNCTION(rng As Variant, op As String) As Variant Select Case UCase(op) Case “SUM” STATFUNCTION = Application.Sum(rng) Case “AVERAGE” STATFUNCTION = Application.Average(rng) Case “MEDIAN” STATFUNCTION = Application.Median(rng) Case “MODE” STATFUNCTION = Application.Mode(rng) Case “COUNT” STATFUNCTION = Application.Count(rng) Case “MAX” STATFUNCTION = Application.Max(rng) Case “MIN” STATFUNCTION = Application.Min(rng) Case “VAR” STATFUNCTION = Application.Var(rng) Case “STDEV” STATFUNCTION = Application.StDev(rng) Case Else STATFUNCTION = CVErr(xlErrNA) End Select End Function Figure 25-2 shows the STATFUNCTION function that is used in conjunction with a drop-down list generated by Excel’s Data➜Data Tools➜Data Validation command. The formula in cell C14 is as follows: =STATFUNCTION(C1:C12,B14)
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Excel ® Microsoft 2010 ® Microsof
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Excel® 2010 Formulas Published by
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Publisher’s Acknowledgments We’
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vi Part VII: Appendixes Appendix A:
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viii Keyboard shortcuts . . . . . .
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x Potential Problems with Names . .
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xii Date-Related Functions . . . .
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xiv Working with Tables . . . . . .
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xvi Chapter 13: Financial Schedules
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xviii Creating Links to Cells . . .
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xx Excel’s Auditing Tools . . . .
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xxii Does the text match a pattern?
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1 INTRODUCTION Welcome to Excel 201
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VBA code listings Introduction 3 Do
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Introduction 5 This chapter is abso
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Introduction 7 You can also use thi
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Basic Information Chapter 1 Excel i
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Introducing Worksheet Functions In
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Let Excel insert functions for you
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Manipulating Text In This Chapter
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Working with Dates and Times In Thi
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Figure 6-10: This worksheet convert
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Figure 6-11: This worksheet uses ti
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Counting and Summing Techniques In
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Getting a quick count or sum Chapte
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Yet another way to perform this cou
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Figure 7-8: Creating a frequency di
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Figure 7-14 shows this formula at w
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The following array formula does th
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Using Lookup Functions In This Chap
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Chapter 8: Using Lookup Functions 2
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Tables and Worksheet Databases In T
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Figure 9-7: A table, after performi
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About the SUBTOTAL function Chapter
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Figure 9-13: This table shows sales
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You can specify more complex filter
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Figure 9-17: The Advanced Filter di
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10 Miscellaneous Calculations In Th
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Need to convert other units? Solvin
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Chapter 10: Miscellaneous Calculati
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Table 10-1: Excel Rounding Function
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Round it up to the nearest penny.
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Introducing Arrays In This Chapter
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Chapter 14: Introducing Arrays 369
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Figure 14-4: Creating a named array
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Figure 14-7: Creating an array from
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To add the three smallest values, y
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Performing Magic with Array Formula
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This version of the formula relies
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PART V Miscellaneous Formula Techni
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Introducing VBA In This Chapter ●
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Figure 22-2: The Macro Settings sec
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Introducing the Visual Basic Editor
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Immediate window Chapter 22: Introd
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Storing VBA code In general, a modu
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3. Type the name of your function i
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770 Index array formulas (continued
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772 Index CONVERT function, 275-277
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776 Index For-Next loops, 652-654 F
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778 Index LOGNORMDIST function, 718
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786 Index VBA (continued) data type
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788 Index
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5. Limited Warranty. (a) WPI warran
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