Re: [R] Searching up a list of values

2012-10-27 Thread arun
Ng To: r-help@r-project.org Cc: Sent: Saturday, October 27, 2012 2:07 AM Subject: [R] Searching up a list of values Dear list, Sorry if this is a really simple question to ask, but I have been stuck at this for some time and have no luck so far. I have 2 data files- a file containing IDs which

Re: [R] Searching up a list of values

2012-10-27 Thread Rui Barradas
Hello, Try the following. idx <- B$ID %in% A B[idx, ] In the case of your data example, the return value is 0 rows. (No matches) Also, the best way to post a data example is using ?dput dput( head(B, 30) ) # copy & paste the output of this Hope this helps, Rui Barradas Em 27-10-2012 07:07,

[R] Searching up a list of values

2012-10-26 Thread Jeremy Ng
Dear list, Sorry if this is a really simple question to ask, but I have been stuck at this for some time and have no luck so far. I have 2 data files- a file containing IDs which I am interested in (maybe about 20 of them)- lets call this file A, and another file containing all the IDs (which is