Check if the object variable is defined in R

0 votes

I want to check if some variable is already defined in R without getting an error. How to dot this?

Below is my trial, but I could not succeed in it.

> is.na(qqaaa)
Error: object 'qqaaa' not found
> is.finite(qqaaa)
Error: object 'qqaaa' not found

Thanks!

Apr 17, 2018 in Data Analytics by CodingByHeart77
• 3,740 points
589 views

1 answer to this question.

0 votes

You can use the exists():

> exists("toFindUnknown")
[1] FALSE
> toFindUnknown <- 32
> exists("toFindUnknown")
[1] TRUE
answered Apr 17, 2018 by Sahiti
• 6,370 points

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