search for: np_000168

...c): NP_000005 NP_000020 NP_000030 NP_000053 file2.txt(e): NP_000005 NP_000020 NP_000030 NP_000031 NP_000053 NP_000055 NP_000087 file3.txt(h): NP_000005 NP_000020 NP_000030 NP_000053 NP_000055 NP_000057 NP_000087 file4.txt (s): NP_000005 NP_000020 NP_000030 NP_000033 NP_000053 NP_000055 NP_000087 NP_000168 Now I did the following FIRST time: c=read.table("file1.txt") e=read.table("file2.txt") s=read.table("file4.txt") h=read.table("file3.txt") > class(c) [1] "data.frame" > class(s) [1] "data.frame" > CiS=intersect(c,s) > CiS N...