I'm new to GIS, and I have some tasks that have to work with lat and lng values. The problem I have is this. I received some Excel files from a data source that supposed to contains some buildings' lat and lng in area A, and what I got was just have x and y (I don't know what does it mean). I know there are several different values like map xy, so I think those are one of the Geographic coordinate system that I don't know. I have to figure it out what is it and have to convert it into lat and lng that you can use it in Google Maps. I wonder if it is possible?
So, the numbers very strange, the area A supposed to have like lat 35.XXXXX and lng 127.XXXXX and what I got was something like x: 12834.6278 and y:3551.5214. At first I thought that those are map x and map y, because one time data source gave me that kinds of numbers and I had to find tool to convert it into lat and lng. However when I use that tool and put numbers I got into Google Maps, it pointed area where not even close to area A.
those are sample data
x | y 12834.6278 | 3551.5214 12834.6689 | 3551.5184 12834.8509 | 3551.4267 12834.8004 | 3551.4605
and this is lat and lng inside of area A, the format of expected numbers.
x | y 35.856770 | 128.576365 35.860748 | 128.570098