arcgis-desktopconvertcoordinate systemgooglegoogle maps
I have acquired many coordinates from a points I extracted from polygons. The points are in WGS 84 UTM Zone 36N, and I want to use them on Google Maps. I found out that they use different systems (I am no GIS expert :S) "that uses a Mercator Projection appropriate for that zone, with Units of Meters", and I want to convert them to units of degrees of Latitude and Longitude.
Example of points I have:
3390003.50135 3390003.50135
The easiest way is to go to the TOC table of contents...
right click the data frame (usually named layers).
Select properties. and the coordinate system tab.
then find the gcs system you would like to have as the final output
set the "document " to that by OK'ing out of the dialogs.
Then when you right click on the layer you want re-projected and select >Data
export data.
You get the export dialog.
Select the "same as data frame" option..
Give it a location and you are done.
Google uses WGS 84 Web Mercator as its coordinate system. In ESRI it is under geographic coordinate systems.
Best Answer
ArcMap has a Geoprocessing Tool that Adds XY Coordinates as two new fields in the attribute table. If you're set up in a projected coordinate system, you'll need to first change over to the geographic system in order for the output of the tool to be in Lat Long.
Alternatively you can open a new map, set the data-frame to WGS 84 (Right-click 'Layers' in the table of contents, choose properties, Coordinate system). Add your point shapefile (or feature class) add two fields for x and y coordinates, right click -> Calculate Geometry -> X-Coordinate -> Use Data frame's coordinate system.
Data Frame Properties (right click 'Layers' in TOC):
Calculate Geometry Dialog Box: