I have x,y data coming in from a [coordinates1] database (GIS - but this could be any database). I have my application with it's own coordinate system, referencing THE SAME MAP.
I have established that a linear relationship exists between coordinates1(x,y) and coordinates2(x,y) as I have subtracted two different coordinates1 and coordinates2 [dividing x1 with x2 and y1 with y2] and in all cases I get them both showing 0.724 or 0.141 or 0.825 respectively i.e coordinates1 + coordinates2.
what I now need to figure out - or you help - is that if coordinates1(100000,200000) and coordinates2(0.125,0.255) how do I calculate coordinates2(x,y) from the data in coordinates1(x,y)?