search for: site_c

...Easier to explain with this example: >my_data=read.table("clipboard", header=TRUE) Depth s_name index 3852 Site_1 144 3852 Site_1 144 3852 Site_1 144 3852 site_A 145 3852 site_A 145 3852 site_A 145 3852 site_A 145 3852 site_B 147 3852 site_B 147 3852 site_B 147 3852 site_B 147 54962 site_C 27 54962 site_C 27 54962 Site_D 217 54962 Site_D 217 54962 Site_D 217 54962 Site_D 217 I'm looking for something like that (four column) Depth s_name index Im_looking 3852 Site_1 144 3852.01 3852 Site_1 144 3852.01 3852 Site_1 144 3852.01 3852 site_A 145 3852.02 3852 site_A 145 3852.02 3852...