英文:
Collecting multivalued results from replicate in a dataframe
问题
假设我有一个产生两列 x 和 y 的函数，我想复制它。```rmyf <- function(){x = rnorm(1)y = x + runif(1)return(data.frame(x=x, y=y))}
我如何获得所有结果的数据框，其中包含两列 x 和 y？
编辑：更新函数以使 x 和 y 相互依赖以提高清晰度。
results <- replicate(10, myf())
<details><summary>英文:</summary>Suppose I have some function that produces two columns x and y, which I would like to replicate.```rmyf <- function(){x = rnorm(1)y = x + runif(1)return(data.frame(x=x, y=y))}
How do I obtain a dataframe of all the results, with two columns x and y?
EDIT: updated function to dependent x & y for clarity
results <- replicate(10, myf())
答案1
得分: 2
你可以在replicate中使用 simplify = FALSE 标志，然后使用do.call(rbind, ...)组合结果。
set.seed(3244)res <- do.call(rbind, replicate(10, myf(), simplify = FALSE))res
英文:
You can do it with simplify = FALSE flag in replicate and rbind the results.
set.seed(3244)res <- do.call(rbind, replicate(10, myf(), simplify = FALSE))res# x y#1 -0.87455516 0.4195560#2 -1.45238736 0.5881533#3 1.19270525 0.3095463#4 2.07718022 0.8251412#5 1.60242707 0.6113180#6 1.06118593 0.3115188#7 0.38004081 0.4001915#8 -0.20526611 0.7026361#9 -0.72092997 0.2526922#10 0.09140117 0.2004964
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