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