Many thanks to you all; specially to Frede.
which(3ddata$variablename>=x,arr.ind=TRUE) answers my question
perfectly.
Cheers!
Bukana
On Tue, Apr 8, 2014 at 11:33 AM, Frede Aakmann Tøgersen
wrote:
> Hi
>
> I know there is a arr.index (or something like that, I'm not near my R
> right now) argum
Sorry forgot to mention that you probably are better of using <= and >= instead
of ==
Br. Frede
Sendt fra Samsung mobil
Oprindelig meddelelse
Fra: mamuash bukana
Dato:08/04/2014 15.51 (GMT+01:00)
Til: r-help@r-project.org
Emne: [R] locating a data value in 3-dimensional data
Hi
I know there is a arr.index (or something like that, I'm not near my R right
now) argument to which (). I have used it for 2-dim arrays and never for higher
dimensions. But try it out by setting the argument to TRUE.
Br. Frede
Sendt fra Samsung mobil
Oprindelig meddelelse -
Dear Mamuash Bukana,
is this a data frame with variable names you indicated?
you will need something like which(dataframename$variablename == x)
but if you have more you might use >
HTH
kd
Feladó: r-help-boun...@r-project.org [r-help-boun...@r-project.or
> I tried:
> which(3ddata==x) # 3ddata is name of data set, x is the observed extreme
> value But this couldn't help me.
You'll need which(3ddata$long==x) if 3ddata is a data frame* with columns long,
lat, time, or something like 3ddata[ ,'long'] if it's a matrix with dimnames or
[,1] if just a
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