Confusing first example in the docs

[erykciepiela]

That's very minor, yet, may discourage users who are new to this excellent library and wants to evaluate it.

What I did with the first example:

const coords = [168,180, 168,178, 168,179, 168,181, 168,183, ...];

const delaunay = new Delaunator(coords);
console.log(delaunay.triangles);
// [623, 636, 619,  636, 444, 619, ...]

was to make it runnable by changing:

const coords = [168,180, 168,178, 168,179, 168,181, 168,183];

and to my surprise this yielded no triangles.
Having a second look I found that all the points are on the same line so, indeed, no triangulation can be done.

Changing example shouldn't be hard but may save some time for new users, the time I have just wasted...

Thanks you for exceptional library, much appreciated!

[shaman4d]

Hi. I don't understand how to make it works.
I have such code:

import Delaunator from "delaunator";
const coords = [1,1,200,300, 400, 400,53,65,700,111];
const delaunay = new Delaunator(coords);
console.log(delaunay.triangles);

And got output in log something:

{
    "0": 1,
    "1": 2,
    "2": 4,
    "3": 4,
    "4": 3,
    "5": 1,
    "6": 4,
    "7": 0,
    "8": 3,
    "9": 3,
    "10": 0,
    "11": 1
}

No coords at all.

[redblobgames]

@shaman4d The output is not coordinates. The input is coordinates. The output is vertex ids or triangle ids. These ids are integers. The guide page shows sample code of how to use the ids to construct edges or triangles.

(Also, I think your question is unrelated to this issue which is about the numbers used for the sample points)

[shaman4d]

@shaman4d The output is not coordinates. The input is coordinates. The output is vertex ids or triangle ids. These ids are integers. The guide page shows sample code of how to use the ids to construct edges or triangles.

(Also, I think your question is unrelated to this issue which is about the numbers used for the sample points)

Hi. Thank you for your answer. I've got the idea!