Error: unexpected symbol when I am using ppDist

[Labros]

Hi, I am a new user of Rstudio. I am trying to calculate distance between points but when I am typing the command I get the following error:

Error: unexpected symbol in "ppDist <- function(pnt1, pnt2){dist <- sqrt((pnt2[1]-pnt1[1])^2 + (pnt2[2]-pnt1[2])^2)unlist"

The command that I give is the following:

ppDist <- function(pnt1, pnt2){dist <- sqrt((pnt2[1]-pnt1[1])^2 + (pnt2[2]-pnt1[2])^2)unlist(dist)}

Can you help me to solve it?
Thanks in advance

[nirgrahamuk]

What is unlist(dist) doing for you?

[andresrcs]

@Labros

(pnt2[2]-pnt1[2])^2)unlist(dist)}

Leaving aside the functionality of your code, you are getting that error message because you have a syntax error, unlist() shouldnt be on the same line inmediatly following a paranthesis, try this:

ppDist <- function(pnt1, pnt2) { 
    dist <- sqrt((pnt2[1]-pnt1[1])^2 + (pnt2[2]-pnt1[2])^2)
    unlist(dist)
}

[Labros]

Thanks andresrcs! I fixed it!

[andresrcs]

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