UTFGrid

UTFGrid parameters:
Center:     {"x": 121.02 ,"y": 46.48 }
Scale:     0.000000356198
View bounds:

•     Left bottom: {"x": 120.16 , "y":45.63 }
•     Right top : { "x": 121.87 , "y":47.34}

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