R- merging two data frames

I have been having a problem with two data frames that I want to merge. One is larger than the other but they share common column names and rownames.

What I would like to do is merge both of them by their specific elements in each row and column.

For example I have 1 data frame: row.names-US Bond,US Stock,EU Bond,EU Stock,Asia Bond,Asia Stock,col.names-Price Risk,Credit Risk,Market Risk;

The other data frame: row.names-US Bond,US Stock;col.names-Price Risk;

Ideally, I would like to merge both data sets by their unique row name and column name.


dat1<-matrix(' ',nrow=4,ncol=6)


You need to specify that you're matching by row.names


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