Unable to get the WorksheetFunction.Linest working

Hi,

I have a problem with the linest function. I'm trying to get the Qudratic regression of a set of values and display it in a sheet. However I keep getting the error "Unable to get the linEst property of the WorksheetFunction Class". My code is:

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When I use the excel formula "=LINEST($B2:$B43,$A2:$A43^{1,2})" this works fine. I just can't figure out how to do the exact same thing using the LinEst function in VBA.

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$A2:$A43^{1,2} is perfectly good worksheet formula syntax that Excel can recognize, but VBA -- being a different programming language -- does not recognize this syntax. In order to do this in VBA, you will need to add another column to your Xvals -- one column for the regular X values that you already have, and a second column that will contain the X^2 values.

With that second column, you should have no difficulty calling LINEST() from VBA.

Why not just put the formula into the cells using code and then you can replace it with the values if you wish?

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Thanks

@Emmy

Administrative Note:

Welcome to the forum.

We are happy to help, however whilst you feel your request is similar to this thread, experience has shown that things soon get confusing when answers refer to particular cells/ranges/sheets which are unique to your post and not relevant to the original.

Please see Forum Rule #4 about hijacking and start a new thread for your query.

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Rorya,
I can do that using this:

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But I also want to increment the Column reference in the Linest formula (go from B-GT while keeping the row numbers 2&43 the same) and display the correspoinding results from .Range(B[rownumberincrement]:D[rownumberincrement]. Do you know if there's a way to get around this or an easier way?

So you want to copy the formula down, but have the columns increment, not the rows?

If so, maybe do something like this:

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adjusting the 150 to however many columns that actually is.