topic Re: road line conflation issue in Esri Young Professionals Network Questions

road line conflation issue

WenjunYang — Mon, 01 Apr 2024 13:30:41 GMT

Morning from chill Kansas. In my recent work, we encountered the issue of conflating road line from two different maps. One is ESRI database, and the other is Google Map. As we found out that the same roads are not consistent when overlapping two maps. Just want to check if anyone has good solution about line conflation.

Solution one from me.

set up a buffer for the road on both maps and match the roads based on the largest overlapping area.

Solution two.

Cut the big map into small pieces.

For each piece, compute Frechet or Hausdorff distances between roads. Matching the roads with the smallest distance.

Any other solutions are super welcome.

Re: road line conflation issue

Dale_Honeycutt — Mon, 01 Apr 2024 15:39:28 GMT

Have you looked at the Conflation toolset within the Editing Toolbox?

Re: road line conflation issue

WenjunYang — Mon, 01 Apr 2024 15:43:13 GMT

Thanks for the solution. I have tried pairwise integrate and pairwise intersect. But no luck. I also tried spatial join within distance. Will try conflation tool as well.

Re: road line conflation issue

Dale_Honeycutt — Mon, 01 Apr 2024 18:17:49 GMT

I'm curious -- when you say 'Google Map', do you mean the Google Map image (like I would get in my browser) or have you somehow gotten vector linework of Google Maps? Because conflating to an image is very different than conflating to vector linework.

Re: road line conflation issue

WenjunYang — Mon, 01 Apr 2024 18:27:28 GMT

That is a great question. Yes, I am talking about vector conflation. However, the Google map here means the lat/lon info for the vertices of the road line is extracted from google map. The road line is originally from LRS.

Re: road line conflation issue

MIKEMORE — Wed, 28 Aug 2024 13:46:26 GMT

My suggestion here is look for a Surveyor. For better accuracy

Re: road line conflation issue

EmmanuelOkafor — Fri, 13 Sep 2024 11:13:03 GMT

I believe a surveyor can help out, guess you should look out for one ..