topic Re: More geometryEngine samples? in ArcGIS JavaScript Maps SDK Questions

More geometryEngine samples?

DavidChrest — Tue, 07 Feb 2017 14:43:58 GMT

Are there any more samples out there using the many methods of the geometryEngine (esri/geometry/geometryEngine | API Reference | ArcGIS API for JavaScript 3.19 )? I have seen this blog series; GeometryEngine | ArcGIS Blog and have utilized geometryEngine for a nice select-buffer-select tool, but was wondering what else was out there anybody may have? There is a lot of methods here that look to do many handy client side analysis.

Thanks for any samples provided.

David

Re: More geometryEngine samples?

thejuskambi — Tue, 07 Feb 2017 14:52:08 GMT

This blog itself covers lot of methods, like within, union, overlaps, intersect etc.

GeometryEngine part 3: Overlay analysis | ArcGIS Blog

It would be useful to understand what exactly you are looking for.

Re: More geometryEngine samples?

DavidChrest — Wed, 08 Feb 2017 14:10:53 GMT

Yes, that's a good one. I was just wondering if there were more use case examples besides overlay analysis.

Re: More geometryEngine samples?

thejuskambi — Wed, 08 Feb 2017 14:48:16 GMT

I am not sure if there are any examples. They are just methods and they have been documented very well.

But, If we are asking what kind of use-cases they can be used? Then, GeometryEngine can be used in lot of other cases where you want to find the relation between 2 geometries, or with the densify to increase the vertex on a geometry or clip, cut, difference and rotate methods you could modify a geometry.

Re: More geometryEngine samples?

KristianEkenes — Wed, 08 Feb 2017 16:58:59 GMT

I presented on this topic at Dev Summit last year (and will again this year). Here's a recording of that presentation in which Dave Bayer and I show a lot of different samples demonstrating ways you can use GeometryEngine: Home | Esri Video

Just a little background...GeometryEngine was originally designed for editing apps that required immediate feedback to the user, such as performing measurements, topology validation, etc. While many of the methods cater more to editing apps, there are probably other creative scenarios where you may find it useful. I'm always interested in seeing how others are using it in their own apps.

Re: More geometryEngine samples?

JeffJacobson — Fri, 10 Feb 2017 19:32:43 GMT

I made this a while ago: GitHub - WSDOT-GIS/arcgis-js-buffer: Buffer UI for ArcGIS API for JavaScript

Re: More geometryEngine samples?

DavidChrest — Tue, 14 Feb 2017 15:59:31 GMT

Thanks so much! I will definitely check out the video!

Re: More geometryEngine samples?

DavidChrest — Tue, 14 Feb 2017 16:03:08 GMT

Thanks! I checked out the demo, looks great. Just one question, when I select the union results option and create multiple buffers, I does not look like they are getting unioned? Just checking to make sure I'm not missing something obvious because that is a really cool feature!

Re: More geometryEngine samples?

JeffJacobson — Tue, 14 Feb 2017 17:05:23 GMT

It's not the most intuitive interface, but I couldn't think of anything better. You need to add more than one geometry to the "geometries" box and check the "union results" checkbox before clicking the "Buffer" button.

Re: More geometryEngine samples?

DavidChrest — Wed, 15 Feb 2017 19:00:13 GMT

Ah yes, I see now. That is very cool! A great example of union functionality.

Re: More geometryEngine samples?

DavidChrest — Wed, 15 Feb 2017 19:28:15 GMT

I downloaded your code from but I'm having trouble understanding how to set it up so the web site works from my end. Exactly what files would I need and what is the folder structure?

Re: More geometryEngine samples?

JeffJacobson — Thu, 16 Feb 2017 19:31:37 GMT

You shouldn't have to rearrange any files. The folder structure should work as-is.

If you can't get the code from the main branch working, try downloading from the gh-pages branch. That is literally where the demo is running from.

Re: More geometryEngine samples?

DavidChrest — Mon, 27 Feb 2017 21:48:39 GMT

OK downloaded the ZIP from that site and have all contents in a folder:

I try to open index.html and just get a blank white page with only the "Source on GitHub" banner in the lower-left corner and

these errors in the Console.

Re: More geometryEngine samples?

JeffJacobson — Mon, 27 Feb 2017 23:53:01 GMT

If you’re not already, you’ll need to run a web server (e.g., IIS Express). You can’t run JavaScript files from other servers if your URL starts with file://.

Re: More geometryEngine samples?

DavidChrest — Tue, 28 Feb 2017 12:55:58 GMT

Yes, I've tried that and I get an error message too. I have many web apps on two different servers. But when I try to access yours, the web page is now blank with a line stating, "The page cannot be displayed because an internal server error has occurred." I the console I get "Failed to load resource: the server responded with a status of 500 (Internal Server Error)." The resource is the server (abc.def.org). So there is definitely something up here because I have never seen this before. I have all kinds of web sites with an index.html and code in css, javascript, etc. folders and all works well. You have some other files such as .config and .sln files I am not familiar with. Could these be doing it?

Re: More geometryEngine samples?

DavidChrest — Tue, 28 Feb 2017 13:16:34 GMT

OK, I experimented a bit. Looks like its your Web.config file. When I remove it your web site now comes up but I can only buffer points I click on the map and your roads don't get selected. I see that it's trying to access your webmap.json file which has url endpoints in it. When I include the Web.config file, the web site does not come up. Without it, it comes up but I get all those URL erros like, "Error: Unable to complete operation. [url:http://www.wsdot.wa.gov/geosvcs/ArcGIS/rest/services/Shared/RegionalTransportationPlanning/MapServer]."

Fore some reason your Web.config file preventing from things working.

Re: More geometryEngine samples?

JeffJacobson — Fri, 03 Mar 2017 17:17:18 GMT

The demo was pointing to some services that had been moved to a different server. I modified the demo to use an AGOL webmap to fix this issue.

Re: More geometryEngine samples?

DavidChrest — Fri, 03 Mar 2017 21:27:45 GMT

OK, great! Thanks so very much for you help! I will give this another try soon. Great code by the way. Learned some new things.