Displaying 3 results from an estimated 3 matches for "tamkaew".
2002 Apr 09
6
matrix dimension and for loop
...ion.
Example of x is a vector.
> x<-rnorm(10)
> y=2
> Z<-matrix(0,NROW(x),NROW(y))
> for (j in 1:NROW(y)) Z[,j]<-x[,j]*y[j]
Error in x[, j] : incorrect number of dimensions
Could anyone please help me to solve these problem?
Thank you very much for your kindness.
Sonchawan Tamkaew
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2002 Apr 25
2
install a package from CRAN
Hi,
I've tried to install package "tseries" on my computer (on Windows) but it
doesn't work so far. I have Perl but no compilers (C or Fortran) installed.
So could anyone who happens to have them please mail me the binaries?
Many thanks in advance,
Sonchawan
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2002 May 03
2
delete rows
Hello,
I would like to know how to delete some rows?
Suppose I have a large data frame look something like this:
x1 x2 x3 ..............
a 1 0.45
b 1 0.41
c 0 0.43
a 1 0.39
d 1 0.40
e 0 0.41
r 1 0.42
a 0 0.46
. . ..
I would like to have another data frame which has all