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Message-ID: <OFD453E56B.54A9F86E-ONC1256D13.00530B0D@ges.marc.societe-generale.fr>
Date: 2003-04-25T15:15:47Z
From: vincent.stoliaroff@socgen.com
Subject: Code bug unresolved involving if condition

Hi R lovers!

I am a beginner in coding with R so my question may be very easily solved
but I don't know how.

I have written the following function in a .txt file


ClearDelta <- function(Matrix)
{
ncol<-ncol(Matrix);nrow<-nrow(Matrix);
for (i in 1:nrow) {
                  for (j in 1:(ncol-1))
                        {if (Matrix[i,j]==NA) (NA->Matrix[i,j+1])}
                  }
}

I can charge it with the source() command
But I get the following message when applied to a matrix

> ClearDelta(MatCor)
Error in if (Matrix[i, j] == NA) (Matrix[i, j + 1] <- NA) :
        missing value where logical needed

MatCor is the following Matrix

> MatCor
           [,1]         [,2]       [,3]
[1,]         NA          0.9870676  0.04648933
[2,] 0.98706757  1.0000000 -0.17353590
[3,] 0.04648933 -0.1735359  1.00000000

Do you know why I get such an unpleasant message from so polite a software?

Thanks to anybody who could help.







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