I think I would likely consider it a formula: i'd like to generate a new
variable in which each observation of the variable price, for example, is
subrtacted from its previous observation. E.g., if obs1 in "price" is 100 and
obs2 is 75 i would like the first observation in "change in price" to be -25,
and so forth.
Mike
On Tue, 30 Jul 2002 18:01:09 +0100 Nick Cox <[email protected]> wrote:
Michael Carney
> If I have two columns, one for the percentage of a year for
> which an option is good and another column for the corresponging
> price, how can I manipulate the
> data to create a "change in price / change in time" column?
> any help would be appreciated.
Are you asking for a formula or algorithm?
Or do you have some formula or algorithm?
If so, please tell us what it is.
> also, does anyone know of any stata help manuals/resources
> that deal with how
> to use stata for primarily financial/economic data?
Books on Stata
http://www.stata.com/bookstore/statabooks.html
Resources
http://www.stata.com/links/resources1.html
If anybody knows anything not on these lists,
please tell Stata Corp.
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