UTFGrid

UTFGrid parameters:
Center:     {"x": 121.12 ,"y": 46.22 }
Scale:     0.000000357172
View bounds:

•     Left bottom: {"x": 120.27 , "y":45.37 }
•     Right top : { "x": 121.97 , "y":47.07}

•   Width: 256
•   Height: 256
•   PixcelCellCount: 8