Negative number is character. Want to change to double

#1

I have an example of what I want to do. For example, I have x = "5" and y = "-5". as.numeric(x) gives me 5, but as.numeric(y) gives me NA. How can I change y and make it -5?

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#2

Hi there,

By surrounding your values in quotes you're making them strings. If you remove the quotes they're treated as numeric:

x <- 5
y <- -5

as.numeric(x) #should return 5
as.numeric(y) #should return -5

I would also recommend using the assignment operator, <-, rather than = to prevent some complications in your code down the line.

Hope this helps!

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#3

Even with numbers as quoted characters this works as expected for me, could you make a reproducible example of your issue?

x <- "5"
y <- "-5"
as.numeric(x)
#> [1] 5
as.numeric(y)
#> [1] -5

If you've never heard of a reprex before, you might want to start by reading this FAQ:

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#4

My guess: your dash is not the right dash. Use charToRaw and see what comes out. It should look something like this:

y <- "-5"
as.numeric(y)
# [1] -5
charToRaw(y)
# [1] 2d 35
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closed #5

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