[R] macro function

David Winsemius dwinsemius at comcast.net
Tue Feb 28 21:03:47 CET 2012

On Feb 28, 2012, at 12:10 PM, mrzung wrote:

> I really appreciate to your attention.
> I want to change the data form "A" into "B"
> http://r.789695.n4.nabble.com/file/n4428807/1.png
> http://r.789695.n4.nabble.com/file/n4428807/2.png

Please use text copied versions of  dput(a) and dput(b) rather than  
posting bitmapped images of your screen.

> In fact, there are 1095 column in data "A".
> Specifically, variable "publish_day" is when some book in the same  
> row is
> published and
> "D-1", "D-2" means the term after the "publish day".
> Of course, the cells in data mean productivity in the day.
> What can be effecient way to do it?

Specify what you want tot do in English. Asking how to create 1000  
separate variable is almost certainly to be the wrong way to go. If  
you wanted a list with names like that we can probably help.


David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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