CODEWITHSUNDEEP
r
Katie Mudd
Katie Mudd

Reputation: 1

Difficulties adding data to R dataset

I'm not too advanced with R so any help would be appreciated. I am trying to add values to columns in my dataset and my dataset is called 'katie'. For example, in the column 'word' I'd like to select instances where 'SUBJECTED' is written and then post 'middle' in the column 'pre.environment', on the same line as 'SUBJECTED' is written. Is there something that I am doing wrong? With this code, the initial line definitely works (as I can see how many "SUBJECTED" items are recognized in the column 'word') but nothing happens when I enter the second line of code.

>x=grep("SUBJECTED", katie$word)
>katie[x,]$pre.environment= c('middle')

I hope this example is sufficient. Thanks in advance for your help.

Upvotes: 0

Views: 46

Answers (1)

xjf
xjf

Reputation: 141

Try the following code, if I understand your question correctly,

katie$pre.environment <- ifelse(grepl("SUBJECTED", katie$word),
                                yes = "middle",
                                no  = katie$pre.environment)

Upvotes: 1

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