R help - Sep 2007 - Create a loop to conduct multiple pairwise binary operations Retry

#Hello,
# Sorry, my last letter contained an error this code should work

#I have three data frames, X,Y and Z with two columns each and different
numbers of rows.

# creation of data frame X

X.alleles     <- c(1,5,6,7,8)
X.Freq        <- c(0.35, 0.15, 0.05 , 0.10, 0.35)
Loc1          <- cbind( X.alleles,X.Freq)
X               <- data.frame(Loc1)

#creation of data frame Y

Y.alleles  <- c(1,4,6,8)
Y.Freq     <- c(0.35, 0.35, 0.10, 0.20 )
Loc2        <- cbind(Y.alleles, Y.Freq)
Y             <- data.frame (Loc2)

# creation of data frame Z

Z.alleles  <- c(1,4,5,6,8)
Z.Freq     <- c(0.35, 0.35, 0.05, 0.05, 0.20)
Loc3       <- cbind(Z.alleles, Z.Freq)
Z            <- data.frame (Loc3)

X
Y
Z

#  I want to create a pair wise multiplication for all of the second columns
of my dataframe X,Y and Z

# Here is a way to get two of the data frames to create a pairwise
multiplication.

X.Freq_times_Y.Freq<- matrix(Y[,2] %o% X[,2], ncol=1)
X.Freq_times_Y.Freq

# I would like to create a loop to calculate all possible pairwise
multiplications for the
# second columns of my X,Y, and Z data frames.
# I will be conducting pair wise comparisons for up to 50 different data
frames so I need the code to be
# as flexible as possible

Any help would be greatly appreciated.

Thanks in advance


Luke Neraas

University of Alaska Fairbanks
School of Fisheries and Ocean Sciences
11120 Glacier Highway
UAF Fisheries Division
Juneau, AK 99801

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