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Portland Streetcar map

View on Flickr

Best viewed original size

Geographically correct and with stop names

Made using official TriMet data that’s been made publicly available for Google Transit and others. Data was loaded into a spreadsheet and converted to SVG coordinates using the formulas:
-122: Remove whole number (entire map has same longitude integer)
*256198: convert to feet (from this calculator)
+62691308: Convert to positive numbers
/25: Shrink image
+125: Shift path over

and 583-((((Latitude-45)*364641)-180120)/25).

This map is also available in SVG format at Wikipedia

By Jason McHuff,