如何创建具有1的二元载体，如果元素是相同的载体的一部分？ [英] How to create a binary vector with 1 if elements are part of the same vector?

问题描述

我想创建一个包含二进制文件的R中所谓的匹配向量。的所有数字应为零除非元素属于同一个变量。听起来令人困惑？它是！ :)
这里有一个例子：

 数据集=（A，B，C，D，×，Y，Z）
VAR1 = C（一，B，Y，Z）
VAR2 = C（C，D，×）
 

因此​​，我与在第一行中的所有变量的数据集。现在，我创建两个组：VAR1和var2。
该元素的匹配矢量A应该是这样的：

  matching_a = C（1,1,0,0,0,1,1）
 

的数字对应于我的数据集。如果在我的数据集的变量是在同一个组，应该有在我的匹配矢量a 1，和一个0否则

不过，我的实际数据集是太大，做手工。有谁明白我想做的事？你能帮忙吗？

非常感谢事先！

解决方案

 ＆GT; matching_a = ifelse（在％VAR1数据集中％，1，0）
＆GT; matching_a
  [1] 1 1 0 0 0 1 1
 

I would like to create a so-called matching vector in R consisting of binaries. All numbers should be zero unless elements belong to the same variable. Sounds confusing? It is! :) Here's an example:

dataset=("a","b","c","d","x","y","z")
var1=c("a","b","y","z")
var2=c("c","d","x")

Thus, I have a dataset with all the variables in the first line. Now I create two groups: var1 and var2. The matching vector for the element "a" is supposed to look like:

matching_a=c(1,1,0,0,0,1,1)

The numbers correspond to my dataset. If the variables in my dataset are in the same group, there should be a 1 in my matching vector, and a 0 otherwise.

However, my actual data set is too big to do it manually. Does anyone understand what I wanna do? And can you help?

Thanks a lot in advance!

解决方案

> matching_a = ifelse(dataset %in% var1, 1, 0)
> matching_a
  [1] 1 1 0 0 0 1 1

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