[R] list index rules evaluation behavior

Dgnn sharkbrainpdx at gmail.com
Tue Mar 30 19:41:08 CEST 2010


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?
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