How to access column with a variable.

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I have column name in a variable. I want to acess that column from a csv how will I do it?.

What I have tried:

RawData <- read.csv("DataCombined.csv")
colName <- grp2$Col1[1]

I want to access RawData$colName. But I am getting error saying $colName is not valid.

Can anyone help me in getting the value.

Posted 29-Jun-17 19:46pm

AshwiniKJ

Updated 18-Jul-17 23:50pm

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AshwiniKJ · Answer 1 · 2017-07-18T23:50:00

Solution 2

This can be done as below,

RawData[[colName]]

Two [[]] will help to access the column with variable name.

Posted 18-Jul-17 23:50pm

AshwiniKJ