尺寸数量

Question

下午好！当我撤回获得的数据'pv'时，R说明了118个matriсes：

[[1]]
              Estimate    Pr(>|t|)
(Intercept)  0.2105808 0.557122939
Rcm[, 1]    -0.1825941 0.248647764
Rcm[, 2]    -0.5519795 0.005074583

[[2]]
              Estimate   Pr(>|t|)
(Intercept)  0.7394133 0.08712924
Rcm[, 1]    -0.5268179 0.00586987
Rcm[, 2]    -0.4915758 0.03754552

但我只需要所有矩阵的P值列。我该怎么做？

Answer 1

我们可以使用lapply将第二列提取为list

lapply(pv, function(x) x[,2, drop = FALSE])

假设，如果我们想要它作为单个矩阵，则可以使用sapply

sapply(pv, function(x) x[,2, drop = FALSE])
#         [,1]       [,2]
#[1,] 0.557122939 0.08712924
#[2,] 0.248647764 0.00586987
#[3,] 0.005074583 0.03754552

数据

pv <- list(structure(c(0.2105808, -0.1825941, -0.5519795, 0.557122939, 
0.248647764, 0.005074583), .Dim = c(3L, 2L), .Dimnames = list(
 c("(Intercept)", "Rcm[, 1]", "Rcm[, 2]"), c("Estimate", "Pr(>|t|)"
))), structure(c(0.7394133, -0.5268179, -0.4915758, 0.08712924, 
 0.00586987, 0.03754552), .Dim = c(3L, 2L), .Dimnames = list(c("(Intercept)", 
"Rcm[, 1]", "Rcm[, 2]"), c("Estimate", "Pr(>|t|)"))))