coordinate systemgoogle mapsqgisweb-mercator
I'm new to QGIS and tried importing some GTFS data in the CSV format (stops.txt). The project CRS, base map CRS and GTFS CRS have all been set to Google Mercator, but the points that are supposed to appear in Boston is now plotted in the middle of the ocean.
Did I miss out on something that messed up the import/plotting?
GPS is per definition always WGS84 EPSG:4326, so this should be ok.
A most popular error ist to exchange lat and lon values, or forgetting negative signs for West and South degrees.
And: Most GPS coordinates end up off the coast of Nigeria, because people have preset a projected coordinate system like EPSG:3857 for the project, not considering that the GPS layer is not in a projected CRS.
QGIS sets the project's CRS to imported *.csv file (EPSG:3857 in your case). EPSG:3857 is a metric projection (basic unit - meter), while your data stored as degrees (1 degree = apx. 111km on Equator latitude).
When you import your data, QGIS 'thinks' you use metres as the main unit, so it shows all your features near the point with coordinates (0;0).
For correct representation of your data, you should set the CRS it is stored:
Best Answer
Set the CRS of the stops layer to WGS84 EPSG:4326. The CSV data is in latitude/longitude. Google Mercator coordinates would be much bigger values. Don't forget to enable "on-the-fly" reprojection in the project properties.