Sorry for not supplying some example code for the above example. Here's an example list 'a' with histogram elements A, B, and C which are also lists.
>a $A $breaks [1] -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 $counts [1] 1 0 0 2 29 120 301 433 421 265 93 43 9 3 $intensities [1] 5.81e-05 0.000000e+00 0.000000e+00 1.162791e-04 1.686047e-03 6.976744e-03 1.750000e-02 [8] 2.512e-02 2.447674e-02 1.540698e-02 5.406977e-03 2.500000e-03 5.232558e-04 1.744186e-04 $density [1] 5.813-05 0.000000e+00 0.000000e+00 1.162791e-04 1.686047e-03 6.976744e-03 1.750000e-02 [8] 2.517442e-02 2.447674e-02 1.540698e-02 5.406977e-03 2.500000e-03 5.232558e-04 1.744186e-04 $mids [1] -75 -65 -55 -45 -35 -25 -15 -5 5 15 25 35 45 55 $xname [1] "X[[1L]]" $equidist [1] TRUE attr(,"class") [1] "histogram" $B $breaks [1] -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 $counts [1] 2 1 3 20 86 225 396 408 404 294 182 125 38 11 1 ... $C ... Is there a way to index the $xname element from each of the elements of a? -- View this message in context: http://n4.nabble.com/list-index-rules-evaluation-behavior-tp1745398p1745579.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.