This is the version I am using
tmprange.Value2 = .Evaluate("IF(ROW(),round(" &
tmprange.Address & ",2))")
On Fri, Apr 13, 2012 at 12:42 AM, Asa Rossoff <a...@lovetour.info> wrote:
> Hi Rajan,
> I think it's been a series of topics. I don't think I could summarize them.
> Maybe Domain has a thought on what was most valuable.
>
> Asa
>
> -----Original Message-----
> From: excel-macros@googlegroups.com [mailto:excel-macros@googlegroups.com]
> On Behalf Of Rajan_Verma
> Sent: Thursday, April 12, 2012 12:32 AM
> To: excel-macros@googlegroups.com
> Subject: RE: $$Excel-Macros$$ Argh. Previously posted evaluate function
> replacing loop has unnoticed major error
>
> Hi Asa/Domain,
> So what is conclusion of this long discussion.
>
> Rajan.
>
> -----Original Message-----
> From: excel-macros@googlegroups.com [mailto:excel-macros@googlegroups.com]
> On Behalf Of Asa Rossoff
> Sent: Apr/Thu/2012 12:33
> To: excel-macros@googlegroups.com
> Subject: RE: $$Excel-Macros$$ Argh. Previously posted evaluate function
> replacing loop has unnoticed major error
>
>> Agree row and column is not a worksheet concept.
> Not sure if this is a typo or miscommunication - I said row/column is a
> worksheet concept (whatever the wisdom of my statement might be).
>
>> But it is as you say a function of the way arrays are stored in memory.
> Not row and column - but I believe the redim preserve limitation is.
> On second thought, see
> http://msdn.microsoft.com/en-us/library/w8k3cys2%28v=vs.71%29.aspx .
> If VBA/VB6 is like VB.Net, REDIM PRESERVE copies the array anyway. Not sure
> exactly what the reasoning for the limitation is, although I have to think
> it has something to do with the efficiency of the operation. But even a
> slightly less efficient operation would be better than a much less efficient
> operation of writing ones own routine to copy the array out, destructively
> redim the array, and copy the desired element back which might be what you'd
> have to do without TRANSPOSE or if you have more than two dimensions. It
> might be OK in a compiled language (such as any other VB variant), but still
> a pain. In VBA it adds a significant inefficiency for a large array.
>
>> And they might as well make it match the way excel is used.
> VBA isn't Excel-specific. It is the language of all Office applications
> (and some third-party software I think). It is also a variant of Visual
> Basic which predates VBA. We basically get Visual Basic which wasn't
> designed particularly for Excel or even use as a macro language, and an API
> added by Excel with additional Excel-specific objects. We're lucky to have
> TRANSPOSE, as it is not available from even VBA running in Access, Word, or
> Powerpoint (without using COM automation to an instance of Excel).
>
>> It also defines the most efficient way to nest loops in multidimension
> arrays.
> Perhaps. I wouldn't expect looping through elements of an array to go
> faster or slower in any particular order. Since you're only retrieving one
> value at a time, I would think the way the values are arranged in memory
> would be irrelevant.
>
>> It really makes no sense to say you can increase all dimension if
>> tossing
> the
>> contents but not if keeping them. Somebody took an implementation
> shortcut.
> If so it was a long time ago in a predecessor language. As to the reason
> Excel provides ranges as an array(row, column) is probably to make it
> intuitive, at the cost of REDIM Preserve usefullness when working with this
> arrays.
>
> worksheets are arranged row, column
> assigning it to an array variable and getting (column, row) would be very
> confusing.
>
> And then, any array you assigned to a range would essentially be transposed
> automatically, too, if you could reassign the array you retrieved from a
> range.
>
> Anyway, sorry!
> Asa
>
> -----Original Message-----
> From: excel-macros@googlegroups.com [mailto:excel-macros@googlegroups.com]
> On Behalf Of Domain Admin
> Sent: Wednesday, April 11, 2012 10:22 PM
> To: excel-macros@googlegroups.com
> Subject: Re: $$Excel-Macros$$ Argh. Previously posted evaluate function
> replacing loop has unnoticed major error
>
> Agree row and column is not a worksheet concept.
> But it is as you say a function of the way arrays are stored in memory.
> And they might as well make it match the way excel is used.
> It also defines the most efficient way to nest loops in multidimension
> arrays.
> Redim preserve does not say you can only expand columns, it says you can
> only expand the last dimension so if you have a 5 dimension array you can
> only expand dimension 5. The rightmost dimension changes fastest so in
> memory for a 2 dimension array you have all of row 1's columns then all of
> row 2's columns etc which means in a loop you want the column loop to be the
> inner loop. True of every language though some reverse the precedence
> order. I think they should have made redim preserve have the first
> dimension be the one that can change. But then since they create a new copy
> anyway I see no reason all dimensions can not change.
> It really makes no sense to say you can increase all dimension if tossing
> the contents but not if keeping them. Somebody took an implementation
> shortcut.
>
> On Wed, Apr 11, 2012 at 8:32 PM, Asa Rossoff <a...@lovetour.info> wrote:
>>> So if redim preserve will only let you extend the column value which
>>> I do not get as that is almost never what anyone would want, can you
>>> transpose the array, do the redim, then transpose back?
>>
>> The concept of row and column is a worksheet concept. In VBA an array
>> doesn't have a "physical orientation" like that. In fact, an array
>> can
> have
>> a dozen dimension if needed or wanted. It's more of a tree (branching
>> / parent-child, etc.) concept than row and column in VBA
>>
>> The reason for the REDIM PRESERVE restriction is most likely related
>> to
> the
>> way the array is arranged in memory. VBA can change the final
>> dimension "in-place" in memory without copying the whole array to a
>> new memory location. TRANSPOSE will create a new copy of the array
>> (at least in vba
> --
>> not necessarily with each use in a worksheet formula -- there I just
>> don't know).
>>
>> Yes, for a two dimensional array, transposing should let you redim the
> other
>> dimension, and transposing again will get you your originial array
>> arrangement with the preserved data. At the cost of copying the array
>> in memory twice.
>>
>> Asa
>>
>> -----Original Message-----
>> From: Asa Rossoff [mailto:a...@lovetour.info]
>> Sent: Wednesday, April 11, 2012 6:51 PM
>> To: 'excel-macros@googlegroups.com'
>> Subject: RE: $$Excel-Macros$$ Argh. Previously posted evaluate
>> function replacing loop has unnoticed major error
>>
>>> Whatever would make you think of it that being the case?
>> Sorry, makes me think of what being the case?
>>
>> -----Original Message-----
>> From: excel-macros@googlegroups.com
>> [mailto:excel-macros@googlegroups.com]
>> On Behalf Of Domain Admin
>> Sent: Wednesday, April 11, 2012 6:18 PM
>> To: excel-macros@googlegroups.com
>> Subject: Re: $$Excel-Macros$$ Argh. Previously posted evaluate
>> function replacing loop has unnoticed major error
>>
>> Whatever would make you think of it that being the case?
>>
>> So if redim preserve will only let you extend the column value which I
>> do not get as that is almost never what anyone would want, can you
>> transpose the array, do the redim, then transpose back?
>>
>> On Wed, Apr 11, 2012 at 6:10 PM, Asa Rossoff <a...@lovetour.info> wrote:
>>> rounding a range results in an array. Evaluate evaluates array
>>> formulas
>> and
>>> returns array results. So, the fact that it didn't with the simple
>>> ROUND formula is strange. transpose switches rows for columns, and a
>>> second transpose switches them back. So you get the original array.
>>> No idea
> why
>>> this was needed..
>>>
>>> -----Original Message-----
>>> From: excel-macros@googlegroups.com
> [mailto:excel-macros@googlegroups.com]
>>> On Behalf Of Domain Admin
>>> Sent: Wednesday, April 11, 2012 6:02 PM
>>> To: excel-macros@googlegroups.com
>>> Subject: Re: $$Excel-Macros$$ Argh. Previously posted evaluate
>>> function replacing loop has unnoticed major error
>>>
>>> Ok that does appear to work, but I don't get it. How does nested
>>> transposes function to make this work correctly? It would appear to
>>> the novice that all you did was transpose it then transpose it back
>>> then whatever...
>>>
>>> Is transposing an array the answer to my other new post about redim
>>> preserve?
>>>
>>> On Wed, Apr 11, 2012 at 5:53 PM, Asa Rossoff <a...@lovetour.info> wrote:
>>>> To retrieve a multi-column array I resorted to
>>>> "transpose(transpose(round(a1:b10,2)))" form.
>>>>
>>>>
>>>>
>>>> From: Asa Rossoff [mailto:a...@lovetour.info]
>>>> Sent: Wednesday, April 11, 2012 5:18 PM
>>>> To: 'excel-macros@googlegroups.com'
>>>> Subject: RE: $$Excel-Macros$$ Argh. Previously posted evaluate
>>>> function replacing loop has unnoticed major error
>>>>
>>>>
>>>>
>>>> Hi Howard,
>>>>
>>>> Seems like an Excel bug.. Sorry for not testing the suggestion.
> Evaluate
>>>> may not be fully documented for a reason. However, it is a great
>>>> useful function, just if you aren't getting the result you expect,
>>>> you may have
>>> to
>>>> look for a workaround. I just posted a query in a developers forum
>>>> with aomse big hitters to see if I can get an explanation for what
>>>> you're
>>> seeing,
>>>> but in the meantime, here is a workaround.
>>>>
>>>>
>>>>
>>>> 1. What you've seen with your use of Evaluate is evaluate
> returning
>>>> only a single value -- the first value in the array, rather than the
>> whole
>>>> array as Evaluate usually does.
>>>>
>>>> 2. The INDEX function can be use to extract a reference to any
>>>> position in an array, or a whole row or column from an array.
>>>>
>>>> 3. Here is a modification of your statement that works in my
>>>> test
>> by
>>>> using index to specify to return the first column from the array
>>>> (which
>> of
>>>> course is the whole array in this case):
>>>>
>>>> tmprange.Value2 = .Evaluate("index(round(" & tmprange.Address &
>> ",2),,1)")
>>>>
>>>>
>>>>
>>>> I used Value2 since it's usually faster, but you can use Value if
>>>> you prefer. INDEX is the relevant change.
>>>>
>>>>
>>>>
>>>> Asa
>>>>
>>>>
>>>>
>>>> From: excel-macros@googlegroups.com
>> [mailto:excel-macros@googlegroups.com]
>>>> On Behalf Of tangledweb
>>>> Sent: Wednesday, April 11, 2012 2:28 PM
>>>> To: excel-macros@googlegroups.com
>>>> Subject: $$Excel-Macros$$ Argh. Previously posted evaluate function
>>>> replacing loop has unnoticed major error
>>>>
>>>>
>>>>
>>>> I used the evaluate function below to replace the commented out loop
>>> portion
>>>> for better performance in rounding off all the cells in a range.
>>>>
>>>> It was certainly fast and it performed the round function correctly
>>>> but
>> it
>>>> also replaced every single cell in the range with the value of the
>>>> first
>>>>
>>>> cell (ok you can laugh now). Any idea what is wrong with it? Kind
>>>> of
>>> hard
>>>> to debug a single line of code.
>>>>
>>>>
>>>>
>>>> With Sheets(RawData)
>>>> Set tmprange = .Range(.Cells(2, 3), .Cells(stoprawdata, 7))
>>>> tmprange.Value = .Evaluate("round(" & tmprange.Address &
>>>> ",2)")
>>> 'use
>>>> evaluate instead of code below
>>>> ' For Each onecell In tmprange ' onecell.Value =
>>>> WorksheetFunction.Round(onecell, 2) ' Next onecell
>>>> End With
>>>>
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