[R] Class attributes

Dear R forum, I want to replace all the elements in a data frame (dd) which match the character x with 0. What's the most elegant way of doing this (there must be an easy way which I've missed)? I settled on the following loop: for(i in 5:12){# These are the column of dd I am

Re: [R] Class attributes

Here a way of doing it: for (i in 5:12){ # convert to character so you can substitute 'x' a - as.character(dd[,i]) a[a == 'x'] - '0' replace with zero dd[,i] - as.numeric(a) } On Fri, Dec 4, 2009 at 11:55 AM, Allen L allen.laroc...@gmail.com wrote: Dear R forum, I want to

Re: [R] Class attributes

On Dec 4, 2009, at 11:55 AM, Allen L wrote: Dear R forum, I want to replace all the elements in a data frame (dd) which match the character x with 0. What's the most elegant way of doing this (there must be an easy way which I've missed)? I settled on the following loop: for(i in