Automating Polynomial Order Selection in Linest
 

This is a follow up question to an earlier post about Linest. Want to
automate the order selection of the polynomial so an end user can quickly
change a cell reference to view the results of different orders (2-6).

The formula I am working with is...

=LINEST(Y's, X's^{1,2,3,4}), 1, 0) -- for a 4th order polyn

I want to be able to enter a value in a seperate cell which updates the
X's^{order} argument to reflect the new order e.g. if the new order is 2 then
that part of the formula updates to X's^{1,2} and so on.

Have poked around google and MS help to no avail.

Thanks in advance
Nick Flyger

Automating Polynomial Order Selection in Linest
 

Try this, were A1 contains the order polynomial you want.

LINEST(Y's, X's^ROW(INDIRECT("1:"&A1)), 1, 0)



cheers...


Nick Flyger wrote:
This is a follow up question to an earlier post about Linest. Want to
automate the order selection of the polynomial so an end user can quickly
change a cell reference to view the results of different orders (2-6).

The formula I am working with is...

=LINEST(Y's, X's^{1,2,3,4}), 1, 0) -- for a 4th order polyn

I want to be able to enter a value in a seperate cell which updates the
X's^{order} argument to reflect the new order e.g. if the new order is 2 then
that part of the formula updates to X's^{1,2} and so on.

Have poked around google and MS help to no avail.

Thanks in advance
Nick Flyger

Automating Polynomial Order Selection in Linest
 

Try it out and for this solution to work it need to be:


wrote:
Try this, were A1 contains the order polynomial you want.

LINEST(Y's, X's^TRANSPOSE(ROW(INDIRECT("1:"&A1))), 1, 0)



cheers...


Nick Flyger wrote:
This is a follow up question to an earlier post about Linest. Want to
automate the order selection of the polynomial so an end user can quickly
change a cell reference to view the results of different orders (2-6).

The formula I am working with is...

=LINEST(Y's, X's^{1,2,3,4}), 1, 0) -- for a 4th order polyn

I want to be able to enter a value in a seperate cell which updates the
X's^{order} argument to reflect the new order e.g. if the new order is 2 then
that part of the formula updates to X's^{1,2} and so on.

Have poked around google and MS help to no avail.

Thanks in advance
Nick Flyger

Automating Polynomial Order Selection in Linest
 

Try it out and for this solution to work it need to be:

LINEST(Y's, X's^TRANSPOSE(ROW(INDIRECT("1:"&A1))), 1, 0)


wrote:
Try this, were A1 contains the order polynomial you want.

LINEST(Y's, X's^ROW(INDIRECT("1:"&A1)), 1, 0)



cheers...


Nick Flyger wrote:
This is a follow up question to an earlier post about Linest. Want to
automate the order selection of the polynomial so an end user can quickly
change a cell reference to view the results of different orders (2-6).

The formula I am working with is...

=LINEST(Y's, X's^{1,2,3,4}), 1, 0) -- for a 4th order polyn

I want to be able to enter a value in a seperate cell which updates the
X's^{order} argument to reflect the new order e.g. if the new order is 2 then
that part of the formula updates to X's^{1,2} and so on.

Have poked around google and MS help to no avail.

Thanks in advance
Nick Flyger