I have a point feature called LineEnd and a line feature and when i create a point nearby to the line it should get snapped to the line end, i tried this using Arcade expression but i am not achieving the output required. So can anyone help me on this.
// Insert Trigger: Snap new LineEnd points to Line vertices
// Get the geometry of the newly inserted point
var point_geom = Geometry($feature);
var sr = point_geom.spatialReference;
Console('Spatial Reference WKID: ' + sr.wkid); // Debug: Log WKID only
Console('Inserted Point X: ' + point_geom.x + ', Y: ' + point_geom.y); // Debug: Log point
// Set snapping tolerance
var snap_tolerance = 1.0; // 1 meter for projected systems
if (sr.wkid == 4326) {
snap_tolerance = 0.00001; // ~1 meter in degrees for WKID 4326
Console('Using degrees-based tolerance');
} else {
Console('Using meters-based tolerance');
}
// Create buffer around the point
var search_buffer = Buffer(point_geom, snap_tolerance, 'meters');
Console('Buffer created with tolerance: ' + snap_tolerance); // Debug: Confirm buffer
// Get Line features
var line_features = FeatureSetByName($datastore, 'Line', ['SHAPE'], false);
var nearby_lines = Intersects(line_features, search_buffer);
Console('Nearby lines count: ' + Count(nearby_lines)); // Debug: Check intersecting lines
// Track closest vertex
var closest_vertex = null;
var min_distance = snap_tolerance + 1; // Initialize to larger than tolerance
// Check each nearby line
for (var line_feature in nearby_lines) {
var line_geom = Geometry(line_feature);
// Try to access paths
var paths = line_geom.paths;
Console('Paths count for line: ' + Count(paths)); // Debug: Check number of paths
if (IsEmpty(paths) || Count(paths) == 0) {
Console('No valid paths in line');
continue; // Skip if no paths
}
for (var i = 0; i < Count(paths); i++) {
var path = paths[i];
if (!IsEmpty(path) && Count(path) > 0) {
// Check start vertex
var start_vertex = path[0];
var start_point = Point({
'x': start_vertex.x,
'y': start_vertex.y,
'spatialReference': sr,
'hasZ': false // Force 2D point
});
var start_distance = Distance(point_geom, start_point, 'meters');
Console('Start distance: ' + start_distance); // Debug: Log distance
if (start_distance < min_distance) {
min_distance = start_distance;
closest_vertex = start_point;
}
// Check end vertex
if (Count(path) > 1) {
var end_vertex = path[Count(path) - 1];
var end_point = Point({
'x': end_vertex.x,
'y': end_vertex.y,
'spatialReference': sr,
'hasZ': false // Force 2D point
});
var end_distance = Distance(point_geom, end_point, 'meters');
Console('End distance: ' + end_distance); // Debug: Log distance
if (end_distance < min_distance) {
min_distance = end_distance;
closest_vertex = end_point;
}
}
}
}
}
// Update geometry if a closer vertex is found
if (closest_vertex != null) {
Console('Snapped to vertex at X: ' + closest_vertex.x + ', Y: ' + closest_vertex.y);
return {
'result': closest_vertex,
'edit': [{
'className': 'LineEnd',
'updates': [{
'globalId': $feature.globalId,
'geometry': closest_vertex
}]
}]
};
} else {
Console('No snap occurred');
return {
'result': point_geom,
'edit': [{
'className': 'LineEnd',
'updates': [{
'globalId': $feature.globalId,
'geometry': point_geom
}]
}]
};
}
