我使用以下方法从更精确的测试中获取p值。但是,我需要为每对打印值“n00,n01,n10,n11”。如何将其打印为表格而不是下面的矩阵以及p值?
fish <- function(y, x) {
n00 = sum((1-x)*(1-y))
n01 = sum((1-x)*y)
n10 = sum(x*(1-y))
n11 = sum(x*y)
a = matrix(c(n00, n01, n10, n11)
, nrow = 2)
pval = fisher.test(a)$p.value
return(pval)
}
chiArray <- function(x) apply(mat1, 1, fish, x)
sapply(1:nrow(mat2), function(j) chiArray(mat2[j, ]))
chisq.cna.mut.test <- sapply(1:nrow(mat2), function(j) chiArray(mat2[j, ]))
我希望输出为:
# name1_mat1 name1_mat2 n00 n01 n10 n11 pvalue
# name1_mat1 name2_mat2 n00 n01 n10 n11 pvalue
输入是(mat1),为了这个例子,考虑mat2与mat1相同。
# ID case1 case2 case3
# name1 0 0 0
# name2 1 0 1
# name3 0 1 1
答案 0 :(得分:0)
使用由此生成的数据:
ID <- paste0("name", 1:5)
mat1 <- 1*cbind(case1=runif(5)>0.5, case2=runif(5)>0.5, case3=runif(5)>0.5)
mat2 <- 1*cbind(case1=runif(5)>0.5, case2=runif(5)>0.5, case3=runif(5)>0.5)
rownames(mat1) <- ID
rownames(mat2) <- ID
更改您的函数以返回所有n
以及p值:
fish <- function(y, x)
{
n00 = sum((1-x)*(1-y))
n01 = sum((1-x)*y)
n10 = sum(x*(1-y))
n11 = sum(x*y)
a = matrix(c(n00, n01, n10, n11), nrow = 2)
pval = fisher.test(a)$p.value
c(a, pval)
}
我认为你想要的就是这个:
result <- data.frame(mat1="", mat2="", n00=0, n01=0, n10=0, n11=0, pvalue=0, stringsAsFactors=FALSE)
k <- 1
for(j in 1:nrow(mat2)) for(i in 1:nrow(mat1))
{
result[k,1] <- paste0(rownames(mat1)[i], "_mat1")
result[k,2] <- paste0(rownames(mat2)[j], "_mat2")
result[k,-(1:2)] <- fish(x=mat2[j, ], y=mat1[i,])
k <- k + 1
}
示例:
> result
mat1 mat2 n00 n01 n10 n11 pvalue
1 name1_mat1 name1_mat2 1 1 0 1 1.0000000
2 name2_mat1 name1_mat2 0 2 0 1 1.0000000
3 name3_mat1 name1_mat2 2 0 1 0 1.0000000
4 name4_mat1 name1_mat2 1 1 1 0 1.0000000
5 name5_mat1 name1_mat2 0 2 1 0 0.3333333
6 name1_mat1 name2_mat2 0 1 1 1 1.0000000
7 name2_mat1 name2_mat2 0 1 0 2 1.0000000
8 name3_mat1 name2_mat2 1 0 2 0 1.0000000
9 name4_mat1 name2_mat2 1 0 1 1 1.0000000
10 name5_mat1 name2_mat2 1 0 0 2 0.3333333
11 name1_mat1 name3_mat2 0 1 1 1 1.0000000
12 name2_mat1 name3_mat2 0 1 0 2 1.0000000
13 name3_mat1 name3_mat2 1 0 2 0 1.0000000
14 name4_mat1 name3_mat2 1 0 1 1 1.0000000
15 name5_mat1 name3_mat2 0 1 1 1 1.0000000
16 name1_mat1 name4_mat2 0 1 1 1 1.0000000
17 name2_mat1 name4_mat2 0 1 0 2 1.0000000
18 name3_mat1 name4_mat2 1 0 2 0 1.0000000
19 name4_mat1 name4_mat2 1 0 1 1 1.0000000
20 name5_mat1 name4_mat2 1 0 0 2 0.3333333
21 name1_mat1 name5_mat2 0 1 1 1 1.0000000
22 name2_mat1 name5_mat2 0 1 0 2 1.0000000
23 name3_mat1 name5_mat2 1 0 2 0 1.0000000
24 name4_mat1 name5_mat2 1 0 1 1 1.0000000
25 name5_mat1 name5_mat2 1 0 0 2 0.3333333