R - 基于列名的子集
[英]R - Subset based on column name
问题描述
My data frame has over 120 columns (variables) and I would like to create subsets bases on column names. 
我的数据框有超过120列（变量），我想基于列名创建子集。
For example I would like to create a subset where the column name includes the string "mood". 例如，我想创建一个子列，其中列名包含字符串“mood”。 Is this possible? 这可能吗？
1 个解决方案
解决方案1
2 2015-03-11 20:07:09
I generally use 我一般用
SubData <- myData[,grep("whatIWant", colnames(myData))]
I know very well that the "," is not necessary and colnames could be replaced by names but it would not work with matrices and I hate to change the formalism when changing objects. 我非常清楚，“，”不是必需的，并且名称可以用名称替换，但它不适用于矩阵，我讨厌在更改对象时改变形式。
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