R help - May 2005 - extract with condition

hello everybody,

i want to extract the name of the rows for the value = "TRUE"

these names give for the next program a list of file

i try many functions, and indexation but no solution give to me, i 
transform only the matrix.


thanks a lot

Jonathan Charrier



nmodT <- Y.obs1
Q <- 3
T <- length(nmodT[,1])*Q

qsd <- colSums(nmodT)
qsd <- as.matrix(qsd)

aqw<- qsd>T


aqw

            [,1]
2003-01-01 FALSE
2003-01-11  TRUE
2003-01-21  TRUE
2003-02-01  TRUE
2003-02-11  TRUE
2003-02-21  TRUE
2003-03-01  TRUE
2003-03-11  TRUE
2003-03-21  TRUE
2003-04-01  TRUE
2003-04-11  TRUE
2003-04-21  TRUE
2003-05-01  TRUE
2003-05-11  TRUE
2003-05-21  TRUE
2003-06-01  TRUE
2003-06-11  TRUE
2003-06-21  TRUE
2003-07-01  TRUE
2003-07-11  TRUE
2003-07-21  TRUE
2003-08-01  TRUE
2003-08-11  TRUE
2003-08-21  TRUE
2003-09-01  TRUE
2003-09-11  TRUE
2003-09-21  TRUE
2003-10-01  TRUE
2003-10-11  TRUE
2003-10-21  TRUE
2003-11-01  TRUE
2003-11-11  TRUE
2003-11-21  TRUE
2003-12-01  TRUE
2003-12-11  TRUE
2003-12-21  TRUE

On May 18, 2005, at 5:11 AM, Jonathan Charrier wrote:
> hello everybody,
> i want to extract the name of the rows for the value = "TRUE"
> these names give for the next program a list of file
> i try many functions, and indexation but no solution give to me, i 
> transform only the matrix.
> thanks a lot
> Jonathan Charrier
>
> nmodT <- Y.obs1
> Q <- 3
> T <- length(nmodT[,1])*Q
>
> qsd <- colSums(nmodT)
> qsd <- as.matrix(qsd)
>
> aqw<- qsd>T
>
> aqw
>
>            [,1]
> 2003-01-01 FALSE
> 2003-01-11  TRUE
...
> 2003-12-21  TRUE
Jonathan,

If you next do row.names(aqw)[aqw[,1]] does that get you
what you want?

Hope this helps,

Stephen