search for: commoncol

I have 2 data frames (A & B) with some common column names. A has 10 rows. B has 20 rows. How do I combine them so I end up with a data frame with 30 rows that only contains the common columns. I was trying 'merge' (Merge two data frames by common columns .....etc. ) but that is not giving me what I expect... > a <- iris > b <- iris > > c <-merge(a,b) >

Hello, All: tools::package_dependencies('Ecfun') failed to find how my development version of Ecfun was using rJava, which generated errors in "R CMD build Ecfun". This is because package_dependencies by default uses CRAN and ignores locally installed packages. What do you think about having this function check both locally installed and CRAN versions? It can