Nothing
.column_centerer <- function(mm){
mm <- mm-matrix(rep(as.vector(apply(mm,2,mean)),nrow(mm)),nrow=nrow(mm),byrow=TRUE)
return(mm)
}
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.