I am working with the TileMill application to publish layers.
Well, first I have posted directly loading the shp file., But when the charge goes I moved about 200 meters.
Then as I have the option, I imported the layer from postgis and my surprise was that the movement was more than 1000 km.
After choosing SRS: Custom and put the appropriate reference system, the movement returned to be 200 meters.
Does anyone have any idea why this might happen?