I am supplying a polygon with multiple features to be uploaded as a geofence layer in a Web AVM. The dataset is projected (MGA94). For some reason they can't work with metres and have requested the dataset in latitude and longitude. How can I convert or "unproject" my dataset? I have tried setting the coordinate system of the dataframe in ArcMap to a geographic coordinate system (GDA94) and exporting the data that way but the value of the coordinates doesn't change.
As you've set your ArcMap data frame to GDA94 and you've seen your data warp correctly you can right click export but, as you've found out, by default the output spatial reference is unchanged. To instruct ArcMap to export to the data frame coordinate system you must check the box:
If you want to convert your data without a right click export use the project tool and specify the output projection as GDA94/Geographic (GCS_GDA_1994). MGA94 (zone) is based on the GDA94 datum so a transformation isn't required.
If you're talking about fields in the attribute table that aren't showing the right CRS try:
- Create new fields in the attribute table(latitude and longitude as
- Right click on the new field's header and select
- Make sure the radio button for
Use coordinate system of the data frameis selected (assuming the data frame is in a geographic coordinate system)
This should display the geographic coordinates in the attribute table for exporting.