/tmp/processing_e049cb7c46df450286b636d45e999b58/a73e875cc8f84acc9cd2f1d9229d6e48/A.shp /tmp/processing_e049cb7c46df450286b636d45e999b58/b10dbbabca9c46aca3e7acaa93a0bf24/B.shp Difference [A]-[B] id_a PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0]] -1