topic Re: Reproject point on grahics layer in ArcGIS API for Flex Questions

Reproject point on grahics layer

RaoBase — Fri, 22 Jun 2012 15:48:26 GMT

All my datasets are currently in British National Grid.
I have received a new dataset with Longitude and Latitude.

I would like to query this layer and display the points on a graphics layer.
However the points appear in the wrong location on the map.

for each (var graphic:Graphic in featureSet.features)
{
graphic.geometry.spatialReference = map.spatialReference
graphicsLayer.add(graphic);
}

Any ideas?

Re: Reproject point on grahics layer

DasaPaddock — Fri, 22 Jun 2012 17:30:55 GMT

See:
http://resources.arcgis.com/en/help/flex-api/apiref/com/esri/ags/tasks/supportClasses/Query.html#outSpatialReference

Re: Reproject point on grahics layer

ShaunWeston — Sun, 24 Jun 2012 09:04:11 GMT

So what format is the dataset in?

I think you would have to re-project those points using a geometry service there is a sample here - http://resources.arcgis.com/en/help/flex-api/samples/index.html#/Project_a_point/01nq0000004w000000/

So you would get the coordinates of the graphic, send them to the geometry service to re-project and then draw the coordinates that are returned.