Data types

Author

Jeffrey R. Stevens

Published

February 3, 2023

Creating objects

First, let’s create some objects:

aa <- 3; bb <- 3L; cc <- "3"; dd <- "TRUE"; ee <- TRUE; ff <- "NA"; gg <- NA

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Checking data types

Guess what data type each object is then check it.

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How do we test if `aa` is an integer?

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What will `is.logical(dd)` return?

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How do we test if `ff` and `gg` are `NA`?

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Checking if objects are the same

Are `aa` and `bb` the same? How do we test this?

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What about `aa` and `cc`?

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A safer comparison tool is `identical()`. Test if `aa` and `bb` are identical. Then try `aa` and `cc`.

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Now see if `aa` is identical to `3` and if `bb` is identical to `3L`.

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