[R] data frame

[Stefano Calza]

Ciao,

do you mean the number of records?

something like 

nrow(a)

I would also suggest ncol(a) instad of length, which would work for a matrix as well.

[Italian]
E' quello che cercavi?
[/Italian]

Ciao

Stefano

On Mon, Sep 17, 2007 at 06:05:58PM +0200, Alfredo Alessandrini wrote:
<Alfredo>Hi everybody,
<Alfredo>
<Alfredo>If I've a data frame like this:
<Alfredo>
<Alfredo>dataframe a
<Alfredo>
<Alfredo>      X0  X2  X4  X6  X8 X10 X12 X14 X16
<Alfredo>1957   0   0   0   0   0   0   0   0   0
<Alfredo>1958   0   0   0   0   0   0   0   0   0
<Alfredo>1959 831   0   0   0   0   0   0   0   0
<Alfredo>1960 544 282   0   0   0   0   0   0   0
<Alfredo>1961 446 365   0   0   0   0   0   0   0
<Alfredo>1962 442 473   0   0   0   0   0   0   0
<Alfredo>1963 595 468   0   0   0   0   0   0   0
<Alfredo>1964 400 397 516   0   0   0   0   0   0
<Alfredo>1965 417 382 401   0   0   0   0   0   0
<Alfredo>1966 642 518 509 453   0   0   0   0   0
<Alfredo>1967 505 340 621 458   0   0   0   0   0
<Alfredo>1968 451 383 428 318 339   0   0   0   0
<Alfredo>
<Alfredo>> length (a)
<Alfredo>[1] 9
<Alfredo>
<Alfredo>I've a questions...
<Alfredo>
<Alfredo>There is a function for show the lenght of single observation?
<Alfredo>
<Alfredo>> ???? (a)
<Alfredo>[1] 12
<Alfredo>
<Alfredo>
<Alfredo>
<Alfredo>Best Wishes,
<Alfredo>
<Alfredo>Alfredo
<Alfredo>
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<Alfredo>
<Alfredo>______________________________________________
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