CODEWITHSUNDEEP
rgraphics
ED1995
ED1995

Reputation: 11

R error: (abline) cannot coerce type 'closure' to vector of type 'double'

I'm getting an error in my R program that says:

Error in int_abline(a = a, b = b, h = h, v = v, untf = untf, ...) : 
cannot coerce type 'closure' to vector of type 'double'

Here is my code, I can't figure out where it's coming from:

n=900000
plot(density(rt(n,n-1)),xlim=c(-10,5),main="",xlab="")
abline(v=t,col="red")

Upvotes: 1

Views: 5131

Answers (2)

Adrian
Adrian

Reputation: 213

I resolved a similar problem by converting the "closure" type to numeric type using: as.numeric(t)

Upvotes: 0

smci
smci

Reputation: 33938

The error is referring to you accidentally passing a function name (t) instead of a numeric as x-coord of your abscissa, as @nrussell said:

abline(v=t,col="red")

I think you meant T/TRUE and assumed the v/h-arguments to abline were booleans, but they're not, it needs numeric coords (if it was only a boolean, how would it know where to put the abscissa?):

abline(a = NULL, b = NULL, h = NULL, v = NULL, reg = NULL,
       coef = NULL, untf = FALSE, ...)

Arguments:

a, b: the intercept and slope, single values.

   h: the y-value(s) for horizontal line(s).

   v: the x-value(s) for vertical line(s).
....

Anyway in this case you want to put it at x=0:

abline(v=0, col='red')

Don't forget, R is case-sensitive, so t is not T/TRUE. This ain't Lisp, baby...

Upvotes: 4

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