I have 2 vector shapefiles of Manila that are supposed to align, but they do not (screenshot attached). I have projected them to the same projection (World Mercator WGS 84, EPSG 3395). One shapefile appears to be shifted to the right and does not align with the Google Street basemap and the other shapefile. I am using QGIS 2.14.16.
The pixelised shapefile in the picture was actually from a MODIS 500m raster image which I polygonised. The other shapefile is the administrative outline of Manila, from GADM.
I understand that MODIS data may have some misalignment issues that may be the cause of this problem, which I have not seen in other forums.
Any ideas as to what could be the problem and solution?