将结果写入foreach循环R中的文件
我正在使用带有%dopar%的foreach包来实现一组模拟。此简单版本说明了模拟的结构:将结果写入foreach循环R中的文件,r,foreach,R,Foreach,我正在使用带有%dopar%的foreach包来实现一组模拟。此简单版本说明了模拟的结构: library(foreach) library(doMC) registerDoMC(4) id.list <- c(1:3000) results <- foreach(i=1:1000,.combine=rbind) %dopar% { ## Randomly draw 100 donor pool units and 1 treated unit v1 <
library(foreach)
library(doMC)
registerDoMC(4)
id.list <- c(1:3000)
results <- foreach(i=1:1000,.combine=rbind) %dopar% {
## Randomly draw 100 donor pool units and 1 treated unit
v1 <- sample(id.list, 1, replace = FALSE)
v2 <- sample(id.list, 1, replace = FALSE)
v3 <- sample(id.list, 1, replace = FALSE)
v4 <- sample(id.list, 1, replace = FALSE)
c(i,v1,v2,v3,v4)
}
库(foreach)
图书馆(doMC)
寄存器DOMC(4)
id.list比方说,不是1000次尝试,而是10000次尝试,我会像这样分解它,使用part_num来区分大小为500的块
library(foreach)
library(doMC)
registerDoMC(4)
id.list <- c(1:3000)
for(part_num in 1:20){
results <- foreach(i=1:500,.combine=rbind) %dopar% {
## Randomly draw 100 donor pool units and 1 treated unit
v1 <- sample(id.list, 1, replace = FALSE)
v2 <- sample(id.list, 1, replace = FALSE)
v3 <- sample(id.list, 1, replace = FALSE)
v4 <- sample(id.list, 1, replace = FALSE)
c(i,v1,v2,v3,v4)
}
write.csv(results, file = paste('part', part_num, '.csv', sep = ''))
}
库(foreach)
图书馆(doMC)
寄存器DOMC(4)
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