elevation Profile intersection values not in order?

Paco — Thu, 26 Dec 2024 21:31:31 GMT

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]); } });

Re: elevation Profile intersection values not in order?

Paco — Thu, 26 Dec 2024 18:12:29 GMT

..I also just noticed that I may not even need 'geometryEngine.intersects' for this? the Query/spatialRelationship = "intersects" seems to do the same thing without it? ..but the problem persists.

topic elevation Profile intersection values not in order? in ArcGIS JavaScript Maps SDK Questions

elevation Profile intersection values not in order?

Re: elevation Profile intersection values not in order?