R列表到data.frame列表 [英] R list of lists to data.frame
问题描述
listHolder
,其长度为5. 每个 listHolder
中的元素是一个数值数据列表,其中包含160个元素。
我需要打开此列表的列表变成长度为5的 data.frame
,每个元素是具有160个元素的数字向量。
但是我尝试过的所有内容,从迭代列表中,并将每个元素与$ code> as.numeric(unlist(listHolder [[i ]])),to
data.frame(matrix(unlist(listHolder)),nrow =长度(totalKeywords),byrow = T))
最终创建长度为160左右的数据框,每个元素是一个具有5个或更多元素的数字向量。
如何做我想要的?
尝试 data.frame(matrix (unlist(totalKeywords),nrow = 132,byrow = T))
产生与我想要的相反 - 160个小项目每5个元素长。
需要修正nrow的值。我修复了如下代码:
dd< - as.data.frame(matrix(unlist(listHolder)),nrow = length(unlist(listHolder [1]))))
I've got a list of lists, call it listHolder
, which has length 5.
Every element in listHolder
is a list of numeric data, with 160 or so elements.
I need to turn this list of lists into a data.frame
of length 5, with each element being a numeric vector with 160 or so elements.
But everything I've tried, from iterating through the list of lists and turning each element with as.numeric(unlist(listHolder[[i]]))
, to
data.frame(matrix(unlist(listHolder), nrow = length(totalKeywords), byrow = T))
ends up creating a data frame of length 160 or so, with each element being a numeric vector with 5 or so elements.
How do I do what I want?
Attempting data.frame(matrix(unlist(totalKeywords), nrow=132, byrow=T))
yields the opposite of what I want - 160 small items each 5 elements long.
The value of nrow needs to be fixed. I fixed your code as follows:
dd <- as.data.frame(matrix(unlist(listHolder), nrow=length(unlist(listHolder[1]))))
这篇关于R列表到data.frame列表的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!