Ok - I think the error was not including the column reference when putting
values into arEMA. I now see that other code I had looked at did have the
second dimension reference, which was set to 0. Having set options base 1,
probably confused me about your arEMA9(nRows, 1).

Think I have it straight now.



"Peter T" wrote:

You have defined a 1D horizontal array. If you were to do

[a1:c1].value = arEMA

the ROW should be populated with the first three values of your array

Try it like this

Redim arEMA(1 to rows),1 to cols)

looks like you only have one column but include the second dimension when
populating, eg
arEMA(1,1) = first value

Regards,
Peter T

"Post Tenebras Lux" wrote in
message ...
I have created an array that stores prices. When my code writes the
values
of the array (single dimension, about 1500 elements), it writes the value
of
the first element to every cell of the worksheet range. Relevant code is
as
follows:

Dim Px As Single, EMA_0 As Single, EMA_1 As Single
Dim arEMA() As Single

nData = UBound(arPxData())
ReDim arEMA(nData)

arEMA(1) = arPxData(1)
For i = 2 To nData
arEMA(i) = (2 / (1 + nPeriods) * (arPxData(i) - arPxData(i - 1)))
+
arPxData(i - 1)
Next

With Range("OutEMA0Head")
Range(.Offset(1, 0), .Offset(nData, 0)).Clear
Range(.Offset(1, 0), .Offset(nData, 0)) = arEMA
End With

The Watch window shows that each element of the arEMA is filled with
different values. The .Clear line works perfectly. So does = arEMA line,
except all 1500 cells are filled with the same value - the first element
of
arEMA.

I don't want to have to loop through every cell, but it makes no sense to
me
why this is happening.

Any suggestions would be appreciated.