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#1
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Numbers and Letters
Hey guys just a quick question, is there any way of getting a piece of code
to tell the difference between a number and a letter, for example if cell.value = cell.value.text (a letter or group of letters) then copy info into col a elseif cell.value = cell.value.number (a number or group of numbers) then copy info into col b end if I am not asking for any specific code to complete a task, just if any of you know how to get your code to distinguish between a number or letter without stating either of them specifically. Any assistance would be greatly apprieciated. The Noob |
#2
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Numbers and Letters
I'd do something like this
if IsNumeric(Cell.value) then ....do your thing else end if -- HTH, Barb Reinhardt If this post was helpful to you, please click YES below. "Noob McKnownowt" wrote: Hey guys just a quick question, is there any way of getting a piece of code to tell the difference between a number and a letter, for example if cell.value = cell.value.text (a letter or group of letters) then copy info into col a elseif cell.value = cell.value.number (a number or group of numbers) then copy info into col b end if I am not asking for any specific code to complete a task, just if any of you know how to get your code to distinguish between a number or letter without stating either of them specifically. Any assistance would be greatly apprieciated. The Noob |
#3
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Numbers and Letters
Thank you very much, you're a star.
The Noob. "Barb Reinhardt" wrote: I'd do something like this if IsNumeric(Cell.value) then ....do your thing else end if -- HTH, Barb Reinhardt If this post was helpful to you, please click YES below. "Noob McKnownowt" wrote: Hey guys just a quick question, is there any way of getting a piece of code to tell the difference between a number and a letter, for example if cell.value = cell.value.text (a letter or group of letters) then copy info into col a elseif cell.value = cell.value.number (a number or group of numbers) then copy info into col b end if I am not asking for any specific code to complete a task, just if any of you know how to get your code to distinguish between a number or letter without stating either of them specifically. Any assistance would be greatly apprieciated. The Noob |
#4
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Numbers and Letters
Thanks. I learned most of it here.
Barb Reinhardt "Noob McKnownowt" wrote: Thank you very much, you're a star. The Noob. "Barb Reinhardt" wrote: I'd do something like this if IsNumeric(Cell.value) then ....do your thing else end if -- HTH, Barb Reinhardt If this post was helpful to you, please click YES below. "Noob McKnownowt" wrote: Hey guys just a quick question, is there any way of getting a piece of code to tell the difference between a number and a letter, for example if cell.value = cell.value.text (a letter or group of letters) then copy info into col a elseif cell.value = cell.value.number (a number or group of numbers) then copy info into col b end if I am not asking for any specific code to complete a task, just if any of you know how to get your code to distinguish between a number or letter without stating either of them specifically. Any assistance would be greatly apprieciated. The Noob |
#5
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Numbers and Letters
There are some potential problems with using IsNumeric which you should be
aware of. From a previous post of mine... I usually try and steer people away from using IsNumeric to "proof" supposedly numeric text. Consider this (also see note below): ReturnValue = IsNumeric("($1,23,,3.4,,,5,,E67$)") Most people would not expect THAT to return True. IsNumeric has some "flaws" in what it considers a proper number and what most programmers are looking for. I had a short tip published by Pinnacle Publishing in their Visual Basic Developer magazine that covered some of these flaws. Originally, the tip was free to view but is now viewable only by subscribers.. Basically, it said that IsNumeric returned True for things like -- currency symbols being located in front or in back of the number as shown in my example (also applies to plus, minus and blanks too); numbers surrounded by parentheses as shown in my example (some people use these to mark negative numbers); numbers containing any number of commas before a decimal point as shown in my example; numbers in scientific notation (a number followed by an upper or lower case "D" or "E", followed by a number equal to or less than 305 -- the maximum power of 10 in VB); and Octal/Hexadecimal numbers (&H for Hexadecimal, &O or just & in front of the number for Octal). NOTE: ====== In the above example and in the referenced tip, I refer to $ signs and commas and dots -- these were meant to refer to your currency, thousands separator and decimal point symbols as defined in your local settings -- substitute your local regional symbols for these if appropriate. As for your question about checking numbers, here are two functions that I have posted in the past for similar questions..... one is for digits only and the other is for "regular" numbers: Function IsDigitsOnly(Value As String) As Boolean IsDigitsOnly = Len(Value) 0 And _ Not Value Like "*[!0-9]*" End Function Function IsNumber(ByVal Value As String) As Boolean ' Leave the next statement out if you don't ' want to provide for plus/minus signs If Value Like "[+-]*" Then Value = Mid$(Value, 2) IsNumber = Not Value Like "*[!0-9.]*" And _ Not Value Like "*.*.*" And _ Len(Value) 0 And Value < "." And _ Value < vbNullString End Function Here are revisions to the above functions that deal with the local settings for decimal points (and thousand's separators) that are different than used in the US (this code works in the US too, of course). Function IsNumber(ByVal Value As String) As Boolean Dim DP As String ' Get local setting for decimal point DP = Format$(0, ".") ' Leave the next statement out if you don't ' want to provide for plus/minus signs If Value Like "[+-]*" Then Value = Mid$(Value, 2) IsNumber = Not Value Like "*[!0-9" & DP & "]*" And _ Not Value Like "*" & DP & "*" & DP & "*" And _ Len(Value) 0 And Value < DP And _ Value < vbNullString End Function I'm not as concerned by the rejection of entries that include one or more thousand's separators, but we can handle this if we don't insist on the thousand's separator being located in the correct positions (in other words, we'll allow the user to include them for their own purposes... we'll just tolerate their presence). Function IsNumber(ByVal Value As String) As Boolean Dim DP As String Dim TS As String ' Get local setting for decimal point DP = Format$(0, ".") ' Get local setting for thousand's separator ' and eliminate them. Remove the next two lines ' if you don't want your users being able to ' type in the thousands separator at all. TS = Mid$(Format$(1000, "#,###"), 2, 1) Value = Replace$(Value, TS, "") ' Leave the next statement out if you don't ' want to provide for plus/minus signs If Value Like "[+-]*" Then Value = Mid$(Value, 2) IsNumber = Not Value Like "*[!0-9" & DP & "]*" And _ Not Value Like "*" & DP & "*" & DP & "*" And _ Len(Value) 0 And Value < DP And _ Value < vbNullString End Function -- Rick (MVP - Excel) "Noob McKnownowt" wrote in message ... Thank you very much, you're a star. The Noob. "Barb Reinhardt" wrote: I'd do something like this if IsNumeric(Cell.value) then ....do your thing else end if -- HTH, Barb Reinhardt If this post was helpful to you, please click YES below. "Noob McKnownowt" wrote: Hey guys just a quick question, is there any way of getting a piece of code to tell the difference between a number and a letter, for example if cell.value = cell.value.text (a letter or group of letters) then copy info into col a elseif cell.value = cell.value.number (a number or group of numbers) then copy info into col b end if I am not asking for any specific code to complete a task, just if any of you know how to get your code to distinguish between a number or letter without stating either of them specifically. Any assistance would be greatly apprieciated. The Noob |
#6
Posted to microsoft.public.excel.programming
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Numbers and Letters
Just to follow up, I thought the following might be of some help...
If Len(CellValue) 0 And CellValue Like "[.]" Then If Not CellValue Like "*[!a-zA-Z]*" Then MsgBox "Cell value contains only letters" ElseIf Not CellValue Like "*[!0-9]*" Then MsgBox "Cell value contains only digits" ElseIf Not Value Like "*[!0-9.]*" And Not Value Like "*.*.*" _ And Value < "." And Value < vbNullString Then MsgBox "Cell value contains a floating point number" Else MsgBox "Cell value is not a number or all letters" End If Else MsgBox "Cell value is not a number or all letters" End If Note that if your cell contains punctuation marks (excluding a single decimal point in a floating point number), then it will not meet any of the tests and the Else condition will report it as not being a number or all letters. If you need to allow some punctuation marks, place them in front of the right-square brackets <] for the first If..Then test and for the appropriate inner If..Then test as well. And if one of those punctuation marks is a dash, make sure it is the last character in the list (that is, it comes immediately before the right-square bracket). Of course, you can substitute any of your own code for the Message Boxes. -- Rick (MVP - Excel) "Rick Rothstein" wrote in message ... There are some potential problems with using IsNumeric which you should be aware of. From a previous post of mine... I usually try and steer people away from using IsNumeric to "proof" supposedly numeric text. Consider this (also see note below): ReturnValue = IsNumeric("($1,23,,3.4,,,5,,E67$)") Most people would not expect THAT to return True. IsNumeric has some "flaws" in what it considers a proper number and what most programmers are looking for. I had a short tip published by Pinnacle Publishing in their Visual Basic Developer magazine that covered some of these flaws. Originally, the tip was free to view but is now viewable only by subscribers.. Basically, it said that IsNumeric returned True for things like -- currency symbols being located in front or in back of the number as shown in my example (also applies to plus, minus and blanks too); numbers surrounded by parentheses as shown in my example (some people use these to mark negative numbers); numbers containing any number of commas before a decimal point as shown in my example; numbers in scientific notation (a number followed by an upper or lower case "D" or "E", followed by a number equal to or less than 305 -- the maximum power of 10 in VB); and Octal/Hexadecimal numbers (&H for Hexadecimal, &O or just & in front of the number for Octal). NOTE: ====== In the above example and in the referenced tip, I refer to $ signs and commas and dots -- these were meant to refer to your currency, thousands separator and decimal point symbols as defined in your local settings -- substitute your local regional symbols for these if appropriate. As for your question about checking numbers, here are two functions that I have posted in the past for similar questions..... one is for digits only and the other is for "regular" numbers: Function IsDigitsOnly(Value As String) As Boolean IsDigitsOnly = Len(Value) 0 And _ Not Value Like "*[!0-9]*" End Function Function IsNumber(ByVal Value As String) As Boolean ' Leave the next statement out if you don't ' want to provide for plus/minus signs If Value Like "[+-]*" Then Value = Mid$(Value, 2) IsNumber = Not Value Like "*[!0-9.]*" And _ Not Value Like "*.*.*" And _ Len(Value) 0 And Value < "." And _ Value < vbNullString End Function Here are revisions to the above functions that deal with the local settings for decimal points (and thousand's separators) that are different than used in the US (this code works in the US too, of course). Function IsNumber(ByVal Value As String) As Boolean Dim DP As String ' Get local setting for decimal point DP = Format$(0, ".") ' Leave the next statement out if you don't ' want to provide for plus/minus signs If Value Like "[+-]*" Then Value = Mid$(Value, 2) IsNumber = Not Value Like "*[!0-9" & DP & "]*" And _ Not Value Like "*" & DP & "*" & DP & "*" And _ Len(Value) 0 And Value < DP And _ Value < vbNullString End Function I'm not as concerned by the rejection of entries that include one or more thousand's separators, but we can handle this if we don't insist on the thousand's separator being located in the correct positions (in other words, we'll allow the user to include them for their own purposes... we'll just tolerate their presence). Function IsNumber(ByVal Value As String) As Boolean Dim DP As String Dim TS As String ' Get local setting for decimal point DP = Format$(0, ".") ' Get local setting for thousand's separator ' and eliminate them. Remove the next two lines ' if you don't want your users being able to ' type in the thousands separator at all. TS = Mid$(Format$(1000, "#,###"), 2, 1) Value = Replace$(Value, TS, "") ' Leave the next statement out if you don't ' want to provide for plus/minus signs If Value Like "[+-]*" Then Value = Mid$(Value, 2) IsNumber = Not Value Like "*[!0-9" & DP & "]*" And _ Not Value Like "*" & DP & "*" & DP & "*" And _ Len(Value) 0 And Value < DP And _ Value < vbNullString End Function -- Rick (MVP - Excel) "Noob McKnownowt" wrote in message ... Thank you very much, you're a star. The Noob. "Barb Reinhardt" wrote: I'd do something like this if IsNumeric(Cell.value) then ....do your thing else end if -- HTH, Barb Reinhardt If this post was helpful to you, please click YES below. "Noob McKnownowt" wrote: Hey guys just a quick question, is there any way of getting a piece of code to tell the difference between a number and a letter, for example if cell.value = cell.value.text (a letter or group of letters) then copy info into col a elseif cell.value = cell.value.number (a number or group of numbers) then copy info into col b end if I am not asking for any specific code to complete a task, just if any of you know how to get your code to distinguish between a number or letter without stating either of them specifically. Any assistance would be greatly apprieciated. The Noob |
#7
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Numbers and Letters
Thanks Rick. I've learned more today. :)
Barb Reinhardt "Rick Rothstein" wrote: Just to follow up, I thought the following might be of some help... If Len(CellValue) 0 And CellValue Like "[.]" Then If Not CellValue Like "*[!a-zA-Z]*" Then MsgBox "Cell value contains only letters" ElseIf Not CellValue Like "*[!0-9]*" Then MsgBox "Cell value contains only digits" ElseIf Not Value Like "*[!0-9.]*" And Not Value Like "*.*.*" _ And Value < "." And Value < vbNullString Then MsgBox "Cell value contains a floating point number" Else MsgBox "Cell value is not a number or all letters" End If Else MsgBox "Cell value is not a number or all letters" End If Note that if your cell contains punctuation marks (excluding a single decimal point in a floating point number), then it will not meet any of the tests and the Else condition will report it as not being a number or all letters. If you need to allow some punctuation marks, place them in front of the right-square brackets <] for the first If..Then test and for the appropriate inner If..Then test as well. And if one of those punctuation marks is a dash, make sure it is the last character in the list (that is, it comes immediately before the right-square bracket). Of course, you can substitute any of your own code for the Message Boxes. -- Rick (MVP - Excel) "Rick Rothstein" wrote in message ... There are some potential problems with using IsNumeric which you should be aware of. From a previous post of mine... I usually try and steer people away from using IsNumeric to "proof" supposedly numeric text. Consider this (also see note below): ReturnValue = IsNumeric("($1,23,,3.4,,,5,,E67$)") Most people would not expect THAT to return True. IsNumeric has some "flaws" in what it considers a proper number and what most programmers are looking for. I had a short tip published by Pinnacle Publishing in their Visual Basic Developer magazine that covered some of these flaws. Originally, the tip was free to view but is now viewable only by subscribers.. Basically, it said that IsNumeric returned True for things like -- currency symbols being located in front or in back of the number as shown in my example (also applies to plus, minus and blanks too); numbers surrounded by parentheses as shown in my example (some people use these to mark negative numbers); numbers containing any number of commas before a decimal point as shown in my example; numbers in scientific notation (a number followed by an upper or lower case "D" or "E", followed by a number equal to or less than 305 -- the maximum power of 10 in VB); and Octal/Hexadecimal numbers (&H for Hexadecimal, &O or just & in front of the number for Octal). NOTE: ====== In the above example and in the referenced tip, I refer to $ signs and commas and dots -- these were meant to refer to your currency, thousands separator and decimal point symbols as defined in your local settings -- substitute your local regional symbols for these if appropriate. As for your question about checking numbers, here are two functions that I have posted in the past for similar questions..... one is for digits only and the other is for "regular" numbers: Function IsDigitsOnly(Value As String) As Boolean IsDigitsOnly = Len(Value) 0 And _ Not Value Like "*[!0-9]*" End Function Function IsNumber(ByVal Value As String) As Boolean ' Leave the next statement out if you don't ' want to provide for plus/minus signs If Value Like "[+-]*" Then Value = Mid$(Value, 2) IsNumber = Not Value Like "*[!0-9.]*" And _ Not Value Like "*.*.*" And _ Len(Value) 0 And Value < "." And _ Value < vbNullString End Function Here are revisions to the above functions that deal with the local settings for decimal points (and thousand's separators) that are different than used in the US (this code works in the US too, of course). Function IsNumber(ByVal Value As String) As Boolean Dim DP As String ' Get local setting for decimal point DP = Format$(0, ".") ' Leave the next statement out if you don't ' want to provide for plus/minus signs If Value Like "[+-]*" Then Value = Mid$(Value, 2) IsNumber = Not Value Like "*[!0-9" & DP & "]*" And _ Not Value Like "*" & DP & "*" & DP & "*" And _ Len(Value) 0 And Value < DP And _ Value < vbNullString End Function I'm not as concerned by the rejection of entries that include one or more thousand's separators, but we can handle this if we don't insist on the thousand's separator being located in the correct positions (in other words, we'll allow the user to include them for their own purposes... we'll just tolerate their presence). Function IsNumber(ByVal Value As String) As Boolean Dim DP As String Dim TS As String ' Get local setting for decimal point DP = Format$(0, ".") ' Get local setting for thousand's separator ' and eliminate them. Remove the next two lines ' if you don't want your users being able to ' type in the thousands separator at all. TS = Mid$(Format$(1000, "#,###"), 2, 1) Value = Replace$(Value, TS, "") ' Leave the next statement out if you don't ' want to provide for plus/minus signs If Value Like "[+-]*" Then Value = Mid$(Value, 2) IsNumber = Not Value Like "*[!0-9" & DP & "]*" And _ Not Value Like "*" & DP & "*" & DP & "*" And _ Len(Value) 0 And Value < DP And _ Value < vbNullString End Function -- Rick (MVP - Excel) "Noob McKnownowt" wrote in message ... Thank you very much, you're a star. The Noob. "Barb Reinhardt" wrote: I'd do something like this if IsNumeric(Cell.value) then ....do your thing else end if -- HTH, Barb Reinhardt If this post was helpful to you, please click YES below. "Noob McKnownowt" wrote: Hey guys just a quick question, is there any way of getting a piece of code to tell the difference between a number and a letter, for example if cell.value = cell.value.text (a letter or group of letters) then copy info into col a elseif cell.value = cell.value.number (a number or group of numbers) then copy info into col b end if I am not asking for any specific code to complete a task, just if any of you know how to get your code to distinguish between a number or letter without stating either of them specifically. Any assistance would be greatly apprieciated. The Noob |
#8
Posted to microsoft.public.excel.programming
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Numbers and Letters
application.isnumber(cell.value)
is much more stringent than VBA's isnumeric(cell.value) The text string '1234 will return False with excel's =isnumber() worksheet function. Noob McKnownowt wrote: Hey guys just a quick question, is there any way of getting a piece of code to tell the difference between a number and a letter, for example if cell.value = cell.value.text (a letter or group of letters) then copy info into col a elseif cell.value = cell.value.number (a number or group of numbers) then copy info into col b end if I am not asking for any specific code to complete a task, just if any of you know how to get your code to distinguish between a number or letter without stating either of them specifically. Any assistance would be greatly apprieciated. The Noob -- Dave Peterson |
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