X-Y coordinates unknown coordinate system?

Question

I received a .dbf file with coordinates in a numerical format I have not been able to identify (for example (X,Y): 6151578.03, 2090875.69). These coordinates represent bus stop locations in the Orange County area (California) and I need to transform them into Lat-Long format (once I figure out what the original format is).

I am using ArcMap 10.2.2.

Is there any documentation available at all? US data can be in a whole bunch of units: State Plane, UTM, and even UTM in US Survey feet. — scruss, Aug 11 '16 at 13:38
Not yet, I recently asked the transit agency to share with me their GCS system/protocol, and tried to insert the X-Y data into ArcMAP with different GCS/projections with no results....; — Luis Enrique Ramos-Santiago, Aug 11 '16 at 15:15

score 1 · Answer 1 · answered Aug 11 '16 at 12:53

1

Change system coordinat major frame to WGS84, after then recalculate point XY in decmicial degrees.

If you are use geographic coordinate system you can do not change coordinate frame and go to recalculate

If its single task you can use this transformer

answered Aug 11 '16 at 12:53

GRM

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Thanks for your reply GRM!...will try the proposed solution... – Luis Enrique Ramos-Santiago Aug 11 '16 at 13:23

score 0 · Answer 2 · answered Aug 11 '16 at 19:47

I believe the Orange CountyBus Stop Shapefile has a .prj file that indicates the data is cast in this Coordinate System - NAD_1983_StatePlane_California_VI_FIPS_0406_Feet. Within ArcMap, you can view the Source Tab of the Layer properties to see a data layers Spatial Reference.

X-Y coordinates unknown coordinate system?

2 Answers2