Hello, Does anyone knows how I can paste in a character vector the following names of maps? LST2007001_1_16 LST2007017_1_16 LST2007033_1_16 .. LST2007353_1_16 LST2008001_1_16 .. How I can implement this in R? Thanks in advance, Sandra UPCT (may be it is too basic ! excuse me, I am learning R).