Hi all, I'm trying to figure out how to set up a transformation pipeline in MapServer where I apply a grid shift. Any ideas
Step 1 UTM z17 NAD83 CSRS (EPSG:2958) to UTM z17 NAD83 Original (EPSG:26917). Example using cs2cs cs2cs +init=epsg:2958 +to +proj=utm +zone=17 +datum=NAD83 +nadgrids=./ON83CSv1.gsb -v -E -I # ---- From Coordinate System ---- +proj=utm +zone=17 +datum=NAD83 +nadgrids=./ON83CSv1.gsb # ---- To Coordinate System ---- +init=epsg:2958 500000 4500000 500000 4500000 500000.15 4499999.63 0.00 Step 2 UTM z17 Original (EPSG:26917) to Web Merc (EPSG:3857) cs2cs +init=epsg:26917 +to +init=epsg:3857 -v -E -I # ---- From Coordinate System ---- +init=epsg:3857 # ---- To Coordinate System ---- +init=epsg:26917 500000.15 4499999.63 500000.15 4499999.63 7357712.08 9347073.72 0.00
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