elevation Profile intersection values not in order?
Hello all!
I am using geometryEngine to intersect/extract values from an existing polygon graticule of elevation values, and put those values into an array and into a 'chartjs' stacked bar chart to show an elevation profile.
I've got the values I need, from console inspection, but they are not in directional order? they seem random?
as you can see from the thumbnails included, as a test, I am creating the profile over high mountains and into a flat low plain. the elevation trend should look similar to the profile i created in ArcPro(2nd image) but they show up in random order along the intersect line(1st image). altho the values are correct.
I am using a SketchViewModel polyline to draw the temporary profile line of interest. disregard the stacked colored subsurface geology bars, only the TOP bar value(surf/topsurf) should be the ground/surface elevation value.
here is a snippet of my code. is there a way to make the intersection polyline read from start node to end node(left to right)? Would there need to be some 'Sorting' of the geometry intersections?
var surf = [];
var bed = [];
var base = [];
const query = surfaceLayer.createQuery();
query.where = "1=1";
query.geometry = lineGeom
query.spatialRelationship = "intersects";
query.returnGeometry = true;
query.outFields = ["LandSurf_elev_m","topBedrx_alt_m","topBsmt_alt_m","OBJECTID"];
surfaceLayer.queryFeatures(query).then(function(result) {
result.features.forEach(function(feature) {
if (geometryEngine.intersects(lineGeom, feature.geometry)) {
var topsurf = parseInt(feature.attributes.LandSurf_elev_m);
var topbed = parseInt(feature.attributes.topBedrx_alt_m);
var topbase = parseInt(feature.attributes.topBsmt_alt_m);
surf.push([topbed, topsurf]);
bed.push([topbase, topbed]);
base.push([topbase + -500, topbase]);
}
});
