In the NZ Rail Maps project, I have preferred in recent years to replace shapefiles with databased formats. When using file based dbms (vs client-server) SQlite stands out as a viable alternative that is extremely well supported with an impeccable reputation. There are a number of SQlite based formats of data for GIS layers. Geopackage… Continue reading NZ Rail Maps: Spatialite vs Geopackage
Category: Qgis
NZ Rail Maps: Using Gimp To Georeference Retrolens Aerial Photos [7]: Extracting Mosaic Tiles
So I have been trialling the alternative overlay method with more files and have decided to redo all the mosaics for Auckland so far. This is a few days’ work but as there are already some issues with accuracy in some of the more hilly areas or where the embankment is raised, it is going… Continue reading NZ Rail Maps: Using Gimp To Georeference Retrolens Aerial Photos [7]: Extracting Mosaic Tiles
NZ Rail Maps: Using Gimp To Georeference Retrolens Aerial Photos [6]: Alternate Overlaying Technique
Today I am going to look at an alternative way of stitching together the source layers. I have to do a set of mosaics for the station of Kamo, which is the northernmost part of Whangarei. From a rail perspective there were two stations there. Just a little south of Kamo there was a coal… Continue reading NZ Rail Maps: Using Gimp To Georeference Retrolens Aerial Photos [6]: Alternate Overlaying Technique