Python Geopy
Download as PPTX, PDF1 like1,541 views
Geopy makes it easy for Python developers to locate coordinates of addresses, cities, countries, and landmarks globally using third-party geocoders and data sources. It allows geocoding and reverse geocoding using APIs from Google Maps, Bing Maps, and OSM. Geopy can calculate geodesic and great-circle distances between points and the length of paths using geographic coordinate systems and projections. It stores location data using the Point and Location classes.
 FORMULAS
• GREAT-CIRCLE DISTANCE USES A SPHERICAL MODEL OF THE EARTH, USING THE AVERAGE GREAT-CIRCLE
RADIUS OF 6372.795 KILOMETERS, RESULTING IN AN ERROR OF UP TO ABOUT 0.5%.
• VINCENTY DISTANCE USES A MORE ACCURATE ELLIPSOIDAL MODEL OF THE EARTH. THE DEFAULT IS THE
WGS-84 ELLIPSOID.](https://image.slidesharecdn.com/geopy-140429015727-phpapp01/85/Python-Geopy-8-320.jpg)
Python Geopy
- 2. INTRODUCTION • GEOPY MAKES IT EASY FOR PYTHON DEVELOPERS TO LOCATE THE COORDINATES OF ADDRESSES, CITIES, COUNTRIES, AND LANDMARKS ACROSS THE GLOBE USING THIRD-PARTY GEOCODERS AND OTHER DATA SOURCES.
- 3. SERVICES • GEOCODERS • CALCULATING DISTANCE • DATA
- 4. GEOCODERS • GEOCODING AND REVERSE GEOCODING • USING API SERVICES OF INTERNET GIANTS, SUCH AS GOOGLE MAPS, BING MAPS ETC. • GOOGLE AND OSM PROVIDE FREE GEOCODING SERVICES WHILE OTHER REQUIRES MAP API KEY.
- 5. GEOCODING USING GOOGLE API V3 • CALCULATING POSITION THROUGH ADDRESS • GEOCODE THROUGH GEOCODE METHOD, RETURNS ADDRESS AND TUPLES OF LATITUDE AND LONGITUDE. • def geocode(self, query, bounds=None, region=None,language=None, sensor=False, exactly_one=True) • param string region: The region code, specified as a ccTLD ("top-level domain") two-character value
- 6. REVERSE GEOCODING • OBTAINING ADDRESS THROUGH CORRESPONDING POSITION. • THROUGH ‘reverse’ METHOD. • def reverse(self, query, language=none, sensor=false, exactly_one=false)
- 7. GEOCODING USING OSM • MAIN CLASS ‘NOMINATIM’ HAS METHODS ‘GEOCODE’ AND ‘INVERSE’ • def geocode(self, query, exactly_one=true) • def reverse(self, query, exactly_one=true)
- 8. CALCULATING DISTANCE • GEOPY CAN CALCULATE GEODESIC DISTANCE BETWEEN TWO POINTS USING THE VINCENTY DISTANCE (https://en.wikipedia.org/wiki/vincenty’s_formulae) OR [GREAT-CIRCLE DISTANCE](https://en.wikipedia.org/wiki/great-circle_distance) FORMULAS • GREAT-CIRCLE DISTANCE USES A SPHERICAL MODEL OF THE EARTH, USING THE AVERAGE GREAT-CIRCLE RADIUS OF 6372.795 KILOMETERS, RESULTING IN AN ERROR OF UP TO ABOUT 0.5%. • VINCENTY DISTANCE USES A MORE ACCURATE ELLIPSOIDAL MODEL OF THE EARTH. THE DEFAULT IS THE WGS-84 ELLIPSOID.
- 9. CALCULTING LENGTH OF PATH • ACCESSING AND MODYFING ELLIPSOID • WHAT IS THE TOTAL LENGTH OF PATH IF I TRAVEL FROM KU -> LMTC -> DOS -> KU IN ‘EVEREST ELLIPSOID’ ?
- 10. DATA • USING class geopy.point.Point • STORES THE LATITUDE AND LONGITUDE IN THE FLOATING POINT DEGREE VALUE AND ALTITUDE IN THE FLOATING POINT KM VALUE.
- 11. DATA • USING class geopy.location.Location • Parameters (self, name="", point=None, attributes=None,)
- 12. • GET THE CODES AT HTTP://BIT.LY/1FOA4XU
- 13. THANK YOU