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elegant way of removing NA's and selecting specific values from a data.frame

Jim Maas 
I have a data.frame "e" and would like to extract the 23rd column, 
remove any NA's and then remove any values >= 30.  I can do it in steps 
such as this but have failed to figure out how to do it in a single line 
.... any suggestions?

first <- e[,23]
second <- first[!is.na(first)]
third <- second[second<=30]

thanks a bunch

J

Thread (3 messages)

Jim Maas elegant way of removing NA's and selecting specific values from a data.frame Jul 6 Bert Gunter elegant way of removing NA's and selecting specific values from a data.frame Jul 6 William Dunlap elegant way of removing NA's and selecting specific values from a data.frame Jul 6