Hello, I have this list of 2-d arrays:
$`0` k d [1,] 0.2011962 4.019537 [2,] 0.2020706 5.722719 [3,] 0.2029451 7.959612 $`1` k d [1,] 0.3148325 2.606903 [2,] 0.3160287 3.806665 [3,] 0.3172249 5.419222 $`2` k d [1,] 0.2332536 4.949390 [2,] 0.2342188 7.115258 [3,] 0.2351840 9.955909 which I need to transform into a data frame like this one: k d group [1,] 0.2011962 4.019537 0 [2,] 0.2020706 5.722719 0 [3,] 0.2029451 7.959612 0 [1,] 0.3148325 2.606903 1 [2,] 0.3160287 3.806665 1 [3,] 0.3172249 5.419222 1 [1,] 0.2332536 4.949390 2 [2,] 0.2342188 7.115258 2 [3,] 0.2351840 9.955909 2 Is there any R function that I can use? I know stack() but it only works with vectors. Thank you! Ernest ______________________________________________ R-help@r-project.org 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.