Arcade docs: Working with vertices

Bud — Thu, 27 Oct 2022 15:59:32 GMT

Could Esri add a section to the docs that explains how to work with vertices in Arcade?

For example, to loop through polyline vertices and read them, do the following:

var geo = Geometry($feature);
for (var part in geo.paths) {
    var line_part = geo.paths[part]
    for (var i in line_part) {

To loop through polyline vertices and modify them, do the following:

var geo =  Dictionary(Text(Geometry($feature)));
var paths = geo['paths'];
for (var path_idx in paths){
    for (var vert_idx in paths[path_idx]){

Explanation:
Geometries are immutable, so we can't modify them directly. But if we convert them to a dictionary, then we can modify the entries in the dictionary, and then use that dictionary to create a new geometry.

As far as I know, there isn't anything in the docs that explains how to work with individual vertices by looping through geometries. Sure, there are samples in the GitHub repo, and they're definitely useful. But it seems like a thorough explanation in the docs would be a big help to people who are learning this stuff from scratch.

Re: Arcade docs: Working with vertices

Bud — Thu, 23 Nov 2023 08:57:28 GMT

Has there been any movement on this? It seems like it's necessary and should be under consideration.

idea Arcade docs: Working with vertices in ArcGIS Pro Ideas

Arcade docs: Working with vertices

Re: Arcade docs: Working with vertices