[R] Sorting Panel Data by Time

[economicurtis]

I have panel data in the following form:

TIME   X1     S1
 1       1      0.99
 1       2      0.50 
 1       3      0.01
 2       3      0.99
 2       1      0.99
 2       2      0.25
 3       3      0.75
 3       2      0.50
 3       1      0.25
...      ...     ......

And desire a new vector of observations in which one column (S1 above) is
sorted for each second from least to largest. 

That is, a new vector (L1 below) of the form:

TIME   X1     S1       L1
 1       1      0.99    0.01
 1       2      0.50    0.50 
 1       3      0.01    0.99
 2       3      0.99    0.25
 2       1      0.99    0.99
 2       2      0.25    0.99
 3       3      0.75    0.25
 3       2      0.50    0.50
 3       1      0.25    0.75
...      ...     ......    .....

Sorry for the NOOB question, but any help would be great. 

Curtis Kephart

--
View this message in context: http://r.789695.n4.nabble.com/Sorting-Panel-Data-by-Time-tp4017271p4017271.html
Sent from the R help mailing list archive at Nabble.com.