topic Re: Geographic coordinate to MapPoint in ArcGIS Pro SDK Questions

Geographic coordinate to MapPoint

andresarias — Mon, 23 Jan 2017 18:57:10 GMT

Hello, I'm trying to locate on the map a geographic coordinate. I haven't been able to find a ProSnippet, arcgis pro sdk community samples or any other example that can give me clues on how to do it.#arcgisprosdk #csharp #addin #coordinate‌ #mappoint‌

Re: Geographic coordinate to MapPoint

CharlesMacleod — Mon, 23 Jan 2017 20:05:30 GMT

Hi Andreas, can you be more specific please? You want to....zoom, pan to the location, select something at a location, show a dot (or similar) on a map "at" the location or...?

Re: Geographic coordinate to MapPoint

andresarias — Mon, 23 Jan 2017 20:33:22 GMT

I am creating a tool that would zoom in on specific geographic points. My idea is to have the list of geographic points with their geographic coordinates which the tool should convert to the current map mappoints, but as said I'm a bit clueless on how to go about.

Re: Geographic coordinate to MapPoint

DuaneWhistle — Mon, 23 Jan 2017 21:12:47 GMT

I created a MapPoint then used this code:

var coords = GeometryEngine.Project(theMapPoint, SpatialReferences.WGS84) as MapPoint;

_pointSymbol = SymbolFactory.ConstructPointSymbol(ColorFactory.RedRGB, 6, SimpleMarkerStyle.Circle);

AddOverlayAsync(coords, _pointSymbol.MakeSymbolReference());

ActiveMapView.ZoomTo(theMapPoint);

Re: Geographic coordinate to MapPoint

andresarias — Mon, 23 Jan 2017 21:40:00 GMT

What is theMapPoint? Is it a point selected from the map? If so, that's not what I need. I need a way to convert geographic coordinates into MapPoints.

Re: Geographic coordinate to MapPoint

CharlesMacleod — Mon, 23 Jan 2017 22:22:43 GMT

Hi Andreas, might I suggest starting here:

Create MapPoint

https://github.com/esri/arcgis-pro-sdk/wiki/ProSnippets-Geometry#construct-a-mappoint

Projection:

https://github.com/esri/arcgis-pro-sdk/wiki/ProSnippets-Geometry#project-from-wgs84-to-webmercator

Zoom, Pan, etc.

https://github.com/esri/arcgis-pro-sdk/wiki/ProSnippets-MapExploration#zoom-to-an-extent

and so, one example might be.....

QueuedTask.Run(() => {

//Create a point

var pt = MapPointBuilder.CreateMapPoint(x,y,SpatialReferenceBuilder.CreateSpatialReference(4326));
//Buffer it - for purpose of zoom
var poly = GeometryEngine.Buffer(pt, buffer_size);

//do we need to project the buffer polygon?

if (!MapView.Active.Map.SpatialReference.IsEqual(poly.SpatialReference)) {
//project the polygon
poly = GeometryEngine.Project(poly, MapView.Active.Map.SpatialReference);
}

//Zoom - add in a delay for animation effect
MapView.Active.ZoomTo(poly,new TimeSpan(0, 0, 0, 3));

});