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2
votes
1answer
46 views

Blank MapServer WMS image at low zoom levels in OpenLayers

I have an OpenLayers map using OSM as the baselayer with several layers coming from MapServer via WMS. The OL map is in EPSG:3857 and my mapfile (and shapefiles) are in EPSG:4326. In my mapfile I ...
1
vote
1answer
65 views

Data points Imported into QGIS are in the middle of ocean

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 ...
0
votes
0answers
15 views

Calculate bounding box of complete image from reference points within the image [duplicate]

I have some images (raster charts in RNC format) which give me a series of reference points within the image which relate the pixel position to the geographic coordinates. The charts are Mercator ...
6
votes
1answer
360 views

Which is the correct projection in ArcGIS for EPSG:3857/900913?

I want to publish a mapservice in ArcGIS server, which will be overlayed on Google Maps or Bing Maps. For this, the Map Service needs to be in EPSG:3857/900913. The Google Maps projection is supposed ...