topic Re: com.esri.core.geometry.Latlon in Java Maps SDK Questions

com.esri.core.geometry.Latlon

PeterParker2 — Wed, 06 Nov 2013 16:01:46 GMT

I am trying to use the Latlon class but I can't seem to locate it in the 10.2 SDK API. Which jar is it suppose to be in?

Thanks,
Peter

Re: com.esri.core.geometry.Latlon

EliseAcheson1 — Fri, 08 Nov 2013 12:06:35 GMT

Hi,

What are you trying to achieve?
The geometry object (Point, Polygon, etc.) classes and the GeometryEngine class allow you to work with latitude and longitude coordinates, or geometries in other units, as geometry objects aren't bound to a particular spatial reference - it depends what the spatial reference of the map/layer they are being added to is. For example GeometryEngine has a project method which takes a longitude, latitude, and output spatial reference, returning a point in the units of the output spatial reference, for dealing with geometries which have been defined using latitude longitude coordinates.

~elise

Re: com.esri.core.geometry.Latlon

PeterParker2 — Fri, 08 Nov 2013 14:20:55 GMT

Hello Elise, pretty quite around these parts. 🙂

The long and short of it is, I am building these geometries so I can produce the ESRI JSON needed to make a call to our ArcGIS server REST endpoints (addFeatures specifically). I did find a snippet of code to do this but is rather convoluted. The Latlon class was perfect but is missing from my installation of the SDK (in the jars).

Peter

Hi,

What are you trying to achieve?
The geometry object (Point, Polygon, etc.) classes and the GeometryEngine class allow you to work with latitude and longitude coordinates, or geometries in other units, as geometry objects aren't bound to a particular spatial reference - it depends what the spatial reference of the map/layer they are being added to is. For example GeometryEngine has a project method which takes a longitude, latitude, and output spatial reference, returning a point in the units of the output spatial reference, for dealing with geometries which have been defined using latitude longitude coordinates.

~elise