R help - Feb 2011 - error in density plot

Hi,

I have the code for the density plot
j <- 8 
plot(density(diff_in_sample[,1]), main = list.files()[j])
for(i in 1:25){
lines(density(diff_in_sample[,i]))
}

This gives me an error 
Error in density.default(diff_in_sample[, i]) : 
  'x' contains missing values

I am not quite sure what to do. I have the same code doing plots for
otherfiles but just one is not working. what xactly it means missing values
even if there is there how can i tell it to overlook those

any help would be  appreciated

Thanks
Ramya


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Ramya <ramya.victory <at> gmail.com> writes:
> I have the code for the density plot
> j <- 8 
> plot(density(diff_in_sample[,1]), main = list.files()[j])
> for(i in 1:25){
> lines(density(diff_in_sample[,i]))
> }
> 
> This gives me an error 
> Error in density.default(diff_in_sample[, i]) : 
>   'x' contains missing values
 [snip]

?NA

lines(na.omit(density(diff_in_sample[,i])))

Consider replacing the loop by apply() [no efficiency
gain, but more compact code]