优化R中的双回路
我有一个双循环工作:优化R中的双回路,r,loops,optimization,vectorization,R,Loops,Optimization,Vectorization,我有一个双循环工作: for (i in 1:nrow(doe)) { for (j in 1:nrow(rsm)) { if (rsm[j,2] == doe[i,2] & rsm[j,3] == doe[i,3] & rsm[j,4] == doe[i,4]) { out <- cbind(doe[i,6], rsm[j,6]) matching_out <- rbind(matching_out, out) bre
for (i in 1:nrow(doe)) {
for (j in 1:nrow(rsm)) {
if (rsm[j,2] == doe[i,2] & rsm[j,3] == doe[i,3] & rsm[j,4] == doe[i,4]) {
out <- cbind(doe[i,6], rsm[j,6])
matching_out <- rbind(matching_out, out)
break
}
}
}
for(i/1:nrow(doe)){
适用于(j/1:nrow(rsm)){
if(rsm[j,2]==doe[i,2]&rsm[j,3]==doe[i,3]&rsm[j,4]==doe[i,4]){
out您只需使用一个基本的R
一行程序即可执行此操作:
merge(rsm, doe, by.x=names(rsm)[2:4],by.y=names(doe)[2:4])[-(1:3)]
看看dplyr。试着制作一个可复制的示例,并显示您所需的输出。这里的主要瓶颈是行匹配