Hello Experts, how do I reformat a data frame in the way described below:
df1: ID desc resist thick temp 1 4711 100 5 20 2 4712 101 4 21 3 4711 99 3 19 4 4712 98 7 22 TO df2: id desc Param Value 1 4711 resist 100 1 4711 Thick 5 1 4711 temp 20 2 4712 resist 101 2 4712 Thick 4 2 4712 temp 21 3 4711 resist 99 3 4711 thick 4 3 4711 temp 19 4 4712 resist 98 4 4712 thick 7 4 4712 temp 22 Thanks a lot for your help. With best regards Thorsten ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.