topic Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget in ArcGIS Viewer for Flex Questions

Using the Locate Widgets results, to populate the datagrid in the Identify Widget

JamesHolley — Tue, 17 Jan 2012 16:18:27 GMT

I would like to pass the x,y map point generated when a user searches for their address to populate the identify widget's datagrid with information such as parcel, zoning, and land Use. I am currently using flex api 2.3.1

Any help would be great.

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

RobertScheitlin__GISP — Tue, 17 Jan 2012 17:27:12 GMT

James,

First things first. You should post all Flex Viewer and/or Widget Questions to the Flex Viewer Forum here:

http://forums.arcgis.com/forums/111-ArcGIS-Viewer-for-Flex

What you are asking is doable but will require a lot of custom code do you have any experience customizing widgets in Flex?

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

JamesHolley — Fri, 20 Jan 2012 12:36:17 GMT

Robert,

I do have some experience customizing widgets but not a lot. I am learning as I go. If you could provide any help or a starting point that would be great.

Thanks

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

RobertScheitlin__GISP — Fri, 20 Jan 2012 13:08:13 GMT

James,

This is going to be a little complicated and you will have to add code in both widgets (the locate and the Identify widget). Are you using the standard otb (out of the box) locate widget? Are you going to have your Identify widget preloaded?

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

MLowry — Fri, 20 Jan 2012 13:46:20 GMT

I have used Robert's code and developed a widget that accepts address or lat/long or they click a point on the map, and then they input buffer parameters, and it sends they buffer to the search widget and then to a datagrid. Is this similar to what you're trying to do?

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

JamesHolley — Fri, 20 Jan 2012 18:06:09 GMT

Robert,

The Locate widget I am currently using is modified slightly to work with our current projection, but other than that it is standard. I will have the Identify widget preloaded.

Thanks again

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

RobertScheitlin__GISP — Fri, 20 Jan 2012 20:22:00 GMT

James,

So here it is, I ended up only having to add code to the Identify widget and I tried to comment all my changes. The big thing is this line needs to be the name of your locate widget:

if (dataTable.containsKey("Find U.S. address"))

What you are attempting to identify needs to be on and visible. Basically when you locate an address the XY map point is fired off to the identify widget and buffered 12 units in attempt to get far enough away from the street center line to pickup a parcel.

Don't forget to click the top arrow (promote) and to click the Mark as answer check as shown below:

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

JamesHolley — Mon, 23 Jan 2012 14:42:48 GMT

Robert,

Thank you for taking the time to help me with this project. I will try to make these changes today and let you know how it goes.

Thanks again

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

JamesHolley — Thu, 26 Jan 2012 17:48:11 GMT

Robert,

I tested the .mxml an it returned these errors. Do you have any advice on how to fix these? Any help would be great.

Identify.mxml
Error 1061: Call to a possibly undefined method addListener through a reference with static type Class.

AppEvent.addListener(AppEvent.DATA_PUBLISH, sharedDataUpdated); Line 318

AppEvent.addListener(AppEvent.DATA_NEW_PUBLISHED, sharedDataUpdated2); line 323

Error 1137: Incorrect number of arguments. Expected no more than 4.

setMapAction(DrawTool.MAPPOINT, status, identMarkerSymbol, drawEnd, false); line 418

PopUpRendererSkin.mxml

Error 1180: Call to a possibly undefined method PopUpText. PopUpRendererSkin.mxml line 139 and 168

Thanks Again,
James

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

JamesHolley — Thu, 26 Jan 2012 19:50:51 GMT

Robert

I got it to work, thanks for all the help.

James

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

RobertScheitlin__GISP — Thu, 26 Jan 2012 20:33:39 GMT

James,

Great you must have figured out that I programed it for Flex Viewer 2.5 (forgot you said you where using 2.3.1).

Don't forget to click the Mark as answer check as shown below:

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

MarcWeinshenker1 — Fri, 27 Jan 2012 12:10:15 GMT

Robert,

This is very cool. I've been wanting this kind of function for a long time. I'm having trouble getting it working, though, and I think part of the problem is that I only allow Identify by a point. I made attempt to modify your code to set a point rather than create a polygon extent but it was overreaching the limits of my abilities. Setting the tolerance in the existing code to a small fraction wasn't a great solution, either. Any chance you could offer a point version for this function?

Thanks very much,
Marc

EDIT: in looking at this a bit more, I was able to get it to work with a low tolerance (0.1) but there are some behavior issues in the interaction between the Identify and Locate widgets. In particular, any new results from Identify or from the Locator just keep adding on. Clearing out previously acquired data is not handled well. Any chance you'd like to work on this more? It's a great function.

EDIT 2: I just found another issue. If I use the Locator first and then open Identify, it hangs up at "Loading..." after clicking on the tool, e.g., point identify.

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

RobertScheitlin__GISP — Fri, 27 Jan 2012 14:08:03 GMT

Marc,

This is more of a proof of concept that a full production ready code set that I am going to support. For issue 2 you can see that I asked James if he would have the identify widget preloaded and that is what the programing was for.

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

MarcWeinshenker1 — Fri, 27 Jan 2012 14:19:32 GMT

Ok, thanks.

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

JamesHolley — Fri, 27 Jan 2012 17:02:34 GMT

Robert,

Got everything up and running well, but ran into one issue. I would like to clear the identify widget's dataresults on each new address search or graphics selection. Instead of just adding to the existing results.

Thanks

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

RobertScheitlin__GISP — Fri, 27 Jan 2012 18:01:01 GMT

James,

Just add this one line in the code below:

            private function sharedDataUpdated2(event:AppEvent):void             {                 var dataTable:Hashtable = event.data.data as Hashtable;                 if (dataTable.containsKey("Find U.S. address"))                 {                     var recAC:ArrayCollection = dataTable.find("Find U.S. address") as ArrayCollection;                                          var locateResult:* = recAC[0];                     var mPoly:Polygon = new Polygon(null);                     // The tollerance of 12 is all dependant on how big of a right of way there                     // is from the road                     var ext2:Extent = createExtentAroundMapPoint(locateResult.point, 12) as Extent;                     var pA2:Array = [];                     pA2.push(new MapPoint(ext2.xmin,ext2.ymin,ext2.spatialReference));                     pA2.push(new MapPoint(ext2.xmin,ext2.ymax,ext2.spatialReference));                     pA2.push(new MapPoint(ext2.xmax,ext2.ymax,ext2.spatialReference));                     pA2.push(new MapPoint(ext2.xmax,ext2.ymin,ext2.spatialReference));                     pA2.push(new MapPoint(ext2.xmin,ext2.ymin,ext2.spatialReference));                     mPoly.addRing(pA2);                     mPoly.spatialReference = ext2.spatialReference;                     clear();                     identifyFeatures(mPoly);                 }             }

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

JamesHolley — Fri, 27 Jan 2012 18:17:13 GMT

Thanks, knew it was simple, just didn't know where to add it to the code.

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

DanielMunoz — Mon, 19 Mar 2012 14:30:04 GMT

This is a great combination of tools! Thank you for posting it.
The problem I'm facing is when it is set to a low number (0.1) works great when the user is zoomed out at the County level once the address is found and zooms to street level, the locate-identify does not work any longer because the tolerance is to low; if I set the value to higher number to work at street level then it returns 100's of records at county level.
I was wondering if you guys can give me some ideas how to make the tolerance value map extend independent, or may be something not so sophisticated like force a zoom to the map initialextent before next locate an address event.

Thank you!

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

DanDowning — Mon, 30 Jul 2012 18:38:17 GMT

Robert,

Is there a version of this identify widget that is compiled for flexviewer 3.0?

Thanks,

Danny

James,

So here it is, I ended up only having to add code to the Identify widget and I tried to comment all my changes. The big thing is this line needs to be the name of your locate widget:
if (dataTable.containsKey("Find U.S. address"))
What you are attempting to identify needs to be on and visible. Basically when you locate an address the XY map point is fired off to the identify widget and buffered 12 units in attempt to get far enough away from the street center line to pickup a parcel.

Don't forget to click the top arrow (promote) and to click the Mark as answer check as shown below:

Re: Using the Locate Widgets results, to populate the datagrid in the Identify Widget

RobertScheitlin__GISP — Mon, 30 Jul 2012 18:43:00 GMT

Danny,

As I mentioned before above. This is more of a proof of concept that a full production ready code set that I am going to support. Thus No there is not a compiled version of this change for 3.0.