search for: tp1010000p1010000

...ll have the exact same column names - but I want the newly combined matrix to keep the columns separate. So, as in my final example, there would be one column titled "Apples" for each Matrix that I add in. -- View this message in context: http://n4.nabble.com/How-to-Merge-based-on-Rows-tp1010000p1010000.html Sent from the R help mailing list archive at Nabble.com.