R将不同长度的变量组合成一个控制组

Question

我正在使用bootstrap创建一个新的示例，以生成一个具有年龄和性别控制的控制组。每个变量都有2到8个值之间的不同长度的数字

control_40_50_HRV_female2 <- abs(parametric_bootstrap_boot2(control_40_50_HRV_female_SDNN))
control_50_60_HRV_male2 <- abs(parametric_bootstrap_boot2(control_50_60_HRV_male_SDNN))
control_50_60_HRV_female2 <-abs(parametric_bootstrap_boot2(control_50_60_HRV_female_SDNN))
control_60_70_HRV_male2 <- abs(parametric_bootstrap_boot2(control_60_70_HRV_male_SDNN))
control_60_70_HRV_female2 <-abs(parametric_bootstrap_boot2(control_60_70_HRV_female_SDNN))
control_70_80_HRV_male2 <-abs(parametric_bootstrap_boot2(control_70_80_HRV_male_SDNN))

如何将它们全部放入一组(一个变量)？这样我就可以开始做t检验了？我希望这是清楚的。

下面是变量的输出示例

> control_40_50_HRV_female2
[1]  29.08388 102.49869
> control_50_60_HRV_male2
[1]  36.81686 127.47986  13.40681
> control_50_60_HRV_female2
[1] 25.50313
> control_60_70_HRV_male2
[1]  39.93050 140.75967  13.89545 316.45988 158.91477
> control_60_70_HRV_female2
[1]  26.27908 106.40483

当我运行此命令时

out <- stack(mget(ls(pattern = '^control_\\d{2}_\\d{2}_\\w+_')))[2:1]
dim(out)

我明白了..。这是我从脚本开头创建的所有变量的列表。

> dim(out)
[1] 96683     2
> head(out)
                           ind values
1 control_40_50_HRV_female_BPM  63.48
2 control_40_50_HRV_female_BPM  52.67
3 control_40_50_HRV_female_BPM  88.92
4 control_40_50_HRV_female_BPM  69.04
5 control_40_50_HRV_female_BPM  53.46
6 control_40_50_HRV_female_BPM  63.64

虽然我只需要这些变量的列表control_40_50_HRV_female2，control_50_60_HRV_male2 ....control_70_80_HRV_male2

Answer 1

我们可以使用mget将“控制”对象的值放入list中，然后将其stack到两列的data.frame中

out <- stack(mget(ls(pattern = '^control_\\d{2}_\\d{2}_\\w+_')))[2:1]


head(out)
#                        ind    values
#1 control_40_50_HRV_female2  29.08388
#2 control_40_50_HRV_female2 102.49869
#3 control_50_60_HRV_female2  25.50313
#4   control_50_60_HRV_male2  36.81686
#5   control_50_60_HRV_male2 127.47986
#6   control_50_60_HRV_male2  13.40681