以下は、フィートの測定値を数値からテキストに変換するために Excel で使用するために作成した VBA 関数です。たとえば、この関数は数値 1.5 を受け取り、文字列 1'-6" に変換します。
ただし、何らかの理由で、11.5 インチの値を誤って丸めています。セルが '=11.5/12' (フィートで表される 11.5 インチ) に設定されている場合、結果は 3 の繰り返しで 0.9583 になります。この値を txtfeet() 関数に渡すと、文字列 1'-0" が返されます。実際の答えは、文字列 11 1/2" になるはずです。
この関数は、9.5 インチ (6 の繰り返しで 0.7916) などの他の繰り返し数字に対しても正常に機能します。奇妙なことに、1 フィートと 11.5 インチ (つまり、3 の繰り返しで 1.9583) を渡しても問題なく動作します。
誰でもこのエラーを修正できますか?
これが私の関数のコードです。
Public Function txtfeet(FeetIn As Double, Optional Denominator As Integer = 8)
' This function will change a decimal number of feet (FeetIn) to the text string
' representation of feet, inches, and fractional inches.
'
' It will round the fractional inches to the nearest 1/x where x is the denominator
' and is given by the user as the second argument of this function. If a denominator
' is not given, it defaults to 8 as shown above.
'
' Modified from MrExcel.com
' set a variable to the integer portion of FeetIn
NbrFeet = Fix(FeetIn)
' set a variable to the number of inches in decimal form
InchIn = (FeetIn - NbrFeet) * 12
' set a variable to the integer portion of InchIn
NbrInches = Fix(InchIn)
' set a variable to the remaining fractional inches in decimal form
FracIn = (InchIn - NbrInches) * Denominator
' set a variable to be FracIn rounded to the nearest whole number
Numerator = Application.WorksheetFunction.Round(FracIn, 0)
' if the fractional inches are zero, define the portion of text
' that will represent the fractional inches to be blank
If Numerator = 0 Then
FracText = ""
' otherwise, if the number of inches plus the fractional inches rounds up to
' 12, add one to NbrFeet and set NbrInches to zero and FracText to blank
ElseIf (InchIn + (Numerator / Denominator)) = 12 Then
NbrFeet = NbrFeet + 1
NbrInches = 0
FracText = ""
' otherwise, if the numerator equals the denominator, add one to NbrInches
' and set FracText to blank
ElseIf Numerator = Denominator Then
NbrInches = NbrInches + 1
FracText = ""
' otherwise, define FracText in its simplest fractional form
Else
' use a loop to get the fractional inches to their simplest form
Do
' if the numerator is even, divide both numerator and divisor by 2
If Numerator = Application.WorksheetFunction.Even(Numerator) Then
Numerator = Numerator / 2
Denominator = Denominator / 2
Else
FracText = " " & Numerator & "/" & Denominator
Exit Do
End If
Loop
End If
' define the output of the function as a text string of feet, inches, and
' fractional inches or just inches and fractional inches if NbrFeet is zero
' or just fractional inches if both NbrFeet and NbrInches are zero
If NbrFeet = 0 And NbrInches = 0 And Numerator = 0 Then
txtfeet = "0"""
ElseIf NbrFeet = 0 And NbrInches = 0 Then
txtfeet = Application.WorksheetFunction.Trim(FracText) & """"
ElseIf NbrFeet = 0 Then
txtfeet = NbrInches & FracText & """"
Else
txtfeet = NbrFeet & "'-" & NbrInches & FracText & """"
End If
End Function