topic Re: Zoom To Multiple Polyline. in ArcGIS API for Silverlight Questions

Zoom To Multiple Polyline.

SaurabhDasgupta — Thu, 13 Feb 2014 21:13:16 GMT

Hi

I am developing a silverlight application to zoom to the polyline feature layer of ArcGIS Dynamic Service layer. I have been successful in doing so for the layers but for one of the layers it has got mulitiple polylines where it just zooms to the part of the feature and not of the whole feature. I am generating a list of feature in a list box as provided in the screen shot but as I said its generating multiple features which I dont want. I just want it as one feature in the list and as well as zoomed to the whole feature and not showing it to the part of the feature. Code is attached as well.

Any help will be appreciated.

Thanks,
Saurabh.

Re: Zoom To Multiple Polyline.

Anonymous User — Fri, 14 Feb 2014 14:49:03 GMT

Original User: e_saurabh

Any suggestions on this yet??

Re: Zoom To Multiple Polyline.

MichaelVolz — Fri, 14 Feb 2014 15:01:47 GMT

Is this a multi-part polyline in the source data? If not, I would suggest pre-processing the data to create multi-part polylines which you could do with a python script on say a weekly basis or whatever interval the data gets updated at.

Re: Zoom To Multiple Polyline.

Anonymous User — Fri, 14 Feb 2014 16:22:32 GMT

Original User: e_saurabh

Is this a multi-part polyline in the source data? If not, I would suggest pre-processing the data to create multi-part polylines which you could do with a python script on say a weekly basis or whatever interval the data gets updated at.

Yes the source data is the multi-part polyline data. And I need to do this in Silverlight code to zoom to the total portion of the Polyline B. The data arrangement looks like this:

Polyline Data -1
Name - Polyline A
Object ID - 1

Polyline Data -2

Object ID - 1
Name - Polyline B

Object ID - 2
Name - Polyline B

Object ID - 3
Name - Polyline B

Regards,
Saurabh.

Re: Zoom To Multiple Polyline.

SaurabhDasgupta — Mon, 17 Feb 2014 17:34:41 GMT

Any updates....

~Saurabh.

Re: Zoom To Multiple Polyline.

Anonymous User — Thu, 20 Feb 2014 06:19:34 GMT

Original User: selcuktinaz

If you have a method like so;

ZoomToGraphic(GraphicCollection col);

will your problem be solved? If so i have a solution

Re: Zoom To Multiple Polyline.

AhmedEl-Sisi — Thu, 20 Feb 2014 09:53:35 GMT

you can group features by attribute (polyline name) and add name in combobox with Its related features.
I have modified your sample code as attached.

Re: Zoom To Multiple Polyline.

Anonymous User — Thu, 20 Feb 2014 15:56:14 GMT

Original User: e_saurabh

you can group features by attribute (polyline name) and add name in combobox with Its related features.
I have modified your sample code as attached.

Thanks a lot for the code. I actually able to run the code and this is populating the values correctly to my combo box. But however on selection of any particular value the feature list turns out to be empty. Attaching the screen shot for that. Not sure why.

Any thoughts...

~Saurabh.

Re: Zoom To Multiple Polyline.

AhmedEl-Sisi — Sun, 23 Feb 2014 04:43:08 GMT

Thanks a lot for the code. I actually able to run the code and this is populating the values correctly to my combo box. But however on selection of any particular value the feature list turns out to be empty. Attaching the screen shot for that. Not sure why.

Any thoughts...

~Saurabh.

It seems that query task doesn't return results.

You should implement your zoom in Combobox Selection CHanged event.

 private void QueryComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)         {           GroupedFeatures features = e.AddedItems[0] as GroupedFeatures;                   if (features != null)             {                 ESRI.ArcGIS.Client.Geometry.Envelope selectedFeatureExtent = gf.GetFeaturesExtent();                 MyMap.ZoomTo(selectedFeatureExtent);             }         }

Re: Zoom To Multiple Polyline.

Anonymous User — Mon, 24 Feb 2014 16:58:34 GMT

Original User: e_saurabh

Awesome!!! that resolves my problem. But however with the ArcGIS Online USA States map on the background, this zooms to different location. But I guess thats coz these 2 map services having different spatial reference. I will try that later. But as of now my map zooms to total asset with the group features....

Thanks Ahmed...

~Saurabh.