将 x,y 像素值转换为 lat 和 long

Question

I have latitude, longitude and zoom of center of my map window. I have dimension map window. I also have pixel positions of specific events on the map (mercator projection -openstreetmap ) in the window. Can Anyone help me how to convert these pixel positions into latitude and longitude coordinates or any other coordinate system that I will be able to visualize on different map later? general case of my problem

Answer 1

I have found the solution using this formula ( https://en.wikipedia.org/wiki/Web_Mercator_projection ) enter image description here

1. calculate the x,y position of my center point

2. trasform coordinate system of window to global

3. inverse transformation

    def LatLontoXY(lat_center,lon_center,zoom): C =(256/(2*pi) )* 2**zoom x=C*(math.radians(lon_center)+pi) y=C*(pi-math.log( math.tan( (pi/4) + math.radians(lat_center)/2 ) )) return x,y def xy2LatLon(lat_center,lon_center,zoom,width_internal,height_internal,pxX_internal,pxY_internal): xcenter,ycenter=LatLontoXY(lat_center,lon_center,zoom) xPoint=xcenter- (width_internal/2-pxX_internal) ypoint=ycenter -(height_internal/2-pxY_internal) C = (256 / (2 * pi)) * 2 ** zoom M = (xPoint/C)-pi N =-(ypoint/C) + pi lon_Point =math.degrees(M) lat_Point =math.degrees( (math.atan( math.e**N)-(pi/4))*2 ) return lat_Point,lon_Point