我正在尝试估计和模拟各种模型。我可以安装许多模型，sapply但不知何故，我无法访问输出。
models <- sapply("accept.progov ~ ptot_dev+swacceptcn+(swacceptcn|coal.general)", FUN = function(X) lmer(X, data=dbq))
我已经做到了，我可以通过进一步应用来使用模型sapply，例如，模拟：
sims <- sapply(X = models , FUN = function(X) sim(X, n=10))
但是，现在我需要提取fixefand ranefof sims。通过打印models或者sims它们看起来很像lmer输出，但它们不是。在尝试访问固定效果时，我收到这样的错误消息，就像使用 lmer 输出一样，这似乎是合乎逻辑的：
sims@fixef
Error: trying to get slot "fixef" from an object of a basic class ("list") with no slots
class(sims)
[1] "list"
关于如何访问输出（或将其转换为能够访问它）的任何想法？
谢谢
这是输出sims：
sims
$`accept.progov ~ ptot_dev+swacceptcn+(swacceptcn|coal.general)`
An object of class "sim.merMod"
Slot "fixef":
(Intercept) ptot_dev swacceptcn
[1,] 71.26230 -0.5967700 -5.125157
[2,] 72.31654 -0.3331660 -13.210371
[3,] 72.73718 -0.3910768 -15.319903
[4,] 68.60344 -0.5775278 -10.106682
[5,] 70.36609 -0.3897952 -7.883180
[6,] 70.11542 -0.3413212 -10.959867
[7,] 73.26847 -0.4599989 -10.302523
[8,] 73.46677 -0.4627529 -14.547429
[9,] 69.99146 -0.5947487 -8.681075
[10,] 71.97546 -0.4976680 -10.109415
Slot "ranef":
$coal.general
, , (Intercept)
1 2 3 4 5 6 7 8 9
[1,] -0.3275480720 -10.93724811 12.692639 -3.727188 -0.2119881 1.63602645 1.4972587 -0.4007792 1.354840
[2,] -2.9357382258 -8.47344764 9.832591 -15.602822 -2.0867660 -3.32143496 7.1446528 -7.2902852 10.593827
[3,] -0.5738514837 -6.58777257 7.189278 3.272100 -3.7302182 -2.77115752 4.6410860 -6.9497532 7.013610
[4,] 0.0008799287 -9.42620987 7.733388 -8.888649 -2.7795506 -1.98193393 -3.1739529 2.4603618 1.307669
[5,] 1.5177874134 -10.51052960 10.816926 -4.103975 -8.2232044 0.43857146 4.5353983 -8.1371223 -5.734714
[6,] 0.3591081598 -4.71170518 11.391860 -15.928789 -10.3654403 5.13397114 -1.9557418 3.6573842 7.846707
[7,] -0.1520099025 -9.97569519 5.973820 -6.601445 -5.8213534 -5.97398796 9.1813633 12.0905868 -2.689435
[8,] -3.2966495558 -3.88700417 12.069134 3.972661 -1.3056792 -5.41674684 -0.7940412 3.3800106 6.113203
[9,] 0.9239716129 -0.03016792 -4.695256 -5.092695 -1.4194101 5.82820816 6.7456858 9.4024483 7.683213
[10,] 1.8038318596 -6.69924367 9.612527 -7.118014 -13.3545691 0.03555004 7.5745529 1.6765752 8.020667
, , swacceptcn
1 2 3 4 5 6 7 8 9
[1,] -10.799839 7.400621 3.835463 -7.5630236 -4.112801 -1.108058 -9.648384 -1.729799 -0.5488257
[2,] -4.962062 4.103715 11.493087 6.1079040 -4.432072 6.097044 -5.972890 5.072467 -2.7055490
[3,] -3.831015 0.486487 13.724554 -16.0322440 -5.487974 6.453326 -1.208757 13.072152 -3.1340066
[4,] -3.053745 8.054387 12.682886 2.8787329 3.365597 2.195597 4.271775 5.460537 2.9898383
[5,] -8.098502 4.055499 3.944880 -3.8708456 -14.567725 3.413494 -10.604984 12.821358 7.1130135
[6,] -6.626984 3.892675 7.205407 6.3425843 9.328326 -4.693105 5.304151 11.150812 -3.4270667
[7,] -13.920626 7.548634 9.682934 -5.3058276 -1.991851 4.429253 -16.905243 -10.927869 -2.0806977
[8,] -3.863126 2.470756 9.284932 -20.1617879 -5.352519 8.871024 -1.122215 -1.211589 -0.1492944
[9,] -7.229178 -5.695966 25.527378 -1.7627386 -8.622444 -2.557726 -8.459804 -7.526883 -3.7090101
[10,] -11.098350 3.598449 7.642130 0.2573062 2.701967 5.834333 -14.552764 4.590748 -12.1888232
Slot "sigma":
[1] 11.96711 11.93222 11.93597 11.35270 11.31093 11.23100 11.89647 11.62934 11.61448 11.74406