topic Re: Extent.contains(geometry) Issue in ArcGIS JavaScript Maps SDK Questions

Extent.contains(geometry) Issue

tonylife — Tue, 25 Jun 2013 18:16:52 GMT

I have a case one big polygon includes a polyline, but the code extent.contains(geometry) returns false.
I checked Xmin, Xmax, Ymin, Ymax for both object. polyline is inside of the polygon.
I do notice that the polygon's Spatial Reference wkid is 102100, the polyline has two SR, wkid 102100 and latestwkid 3857.
Does extent.contains(geometry) check the SR?
If so, what should I do for the case?

Thanks,
Tony

Re: Extent.contains(geometry) Issue

JeffJacobson — Tue, 25 Jun 2013 19:16:57 GMT

The IDs 102100 and 3857 both represent the same spatial reference: WGS84 Web Mercator (Auxiliary Sphere), so it would seem unlikely that the cause of the issue is due to a spatial reference system mismatch.

Re: Extent.contains(geometry) Issue

tonylife — Tue, 25 Jun 2013 20:18:44 GMT

The IDs 102100 and 3857 both represent the same spatial reference: WGS84 Web Mercator (Auxiliary Sphere), so it would seem unlikely that the cause of the issue is due to a spatial reference system mismatch.

The polygon geometry (xmin -9789042, xmax -9788311, ymin 5311122, ymax 5311413)
The polyline geometry (xmin -9788713, xmax -9788712, ymin 5311291, ymax 5311317)
It seems to me polyline is inside of polygon, am I missing somthing?

Thanks,
Tony

Re: Extent.contains(geometry) Issue

derekswingley1 — Tue, 25 Jun 2013 21:36:25 GMT

esri/geometry/Extent::contains take a point or extent. Per the docs:

Input Parameters:
<Geometry> geometry Required Can be a Point or Extent.

https://developers.arcgis.com/en/javascript/jsapi/extent.html#contains

You could use the extent of your line but not the line itself.

Re: Extent.contains(geometry) Issue

JeffJacobson — Wed, 26 Jun 2013 16:03:59 GMT

esri/geometry/Extent::contains take a point or extent. Per the docs:

https://developers.arcgis.com/en/javascript/jsapi/extent.html#contains

You could use the extent of your line but not the line itself.

Does this work?

Loop through each point in the polyline and check to see if it is contained in the extent.

If one of the points is outside of the extent, you can break out of the loop. You know the answer is false.

If all of the points are contained in the extent, then the answer is true.

Re: Extent.contains(geometry) Issue

tonylife — Thu, 27 Jun 2013 18:10:28 GMT

esri/geometry/Extent::contains take a point or extent. Per the docs:

https://developers.arcgis.com/en/javascript/jsapi/extent.html#contains

You could use the extent of your line but not the line itself.

Thanks for your information.

I do try the following area._extent.contains(graphic.geometry._extent).
The area's extent is xmin: -9788742, ymin: 5311210, xmax: -9788670, ymax: 5311361
The graphic is a polyline, it's extent is xmin: -9788713, ymin: 5311291, xmax: -9788712, ymax: 5311317
The result is still FALSE. not sure why

Thanks,
Tony