CODEWITHSUNDEEP
pythongpsmapbox
Patrick Rynhart
Patrick Rynhart

Reputation: 485

Standard GPS Coordinates to lat/long/zoom used by MapBox

I'm brand new to MapBox, but like the images it produces, and want to be able to use their API to render some GPS points nicely.

Given a Standard GPS point (and a MapBox zoom level), how can I find the Lon/Lat values for a suitable MapBox 'tile' ?

The actual code that I'm trying to use is the Python code at:

https://github.com/mapbox/mapbox-sdk-py/blob/master/docs/static.md#static-maps

And my starting GPS point is in Auckland New Zealand -36.8,174.7.

https://www.google.co.nz/maps/place/36°48'00.0"S+174°42'00.0"E/

I have naively tried entering "standard" GPS coordinates:

from mapbox import Static service = Static() response = service.image('mapbox.satellite', lon=-36.8, lat=174.7, z=10)

but this results in the error message:

mapbox.errors.InvalidCoordError: Latitude must be between -85.0511 and 85.0511

Searching for this error message led me to this:

https://en.wikipedia.org/wiki/Tiled_web_map

But I still have no idea how to determine the long/lat values of a suitable tile. Any help would be appreciated.

Thanks in Advance

Patrick

Upvotes: 1

Views: 964

Answers (1)

Danilo Gasques
Danilo Gasques

Reputation: 676

The error message indeed right: mapbox.errors.InvalidCoordError: Latitude must be between -85.0511 and 85.0511

You got your coordinates reversed. The following coordinates -36.8, 174.7 stand for Latitude and Longitude, and not the other way around. So your code should be: service.image('mapbox.satellite', lon=174.7 lat=-36.8, z=10)

This can be seen from your Google Maps link: https://www.google.co.nz/maps/place/36°48'00.0"S+174°42'00.0"E/. Latitude guides you from South (negative) to North (positive). Longitude guides you from East (positive) to West (negative). Pay attention the Google link says: 36°48'00.0"S +174°42'00.0"E`. More information available here https://en.wikipedia.org/wiki/Geographic_coordinate_system

Searching for this error message led me to this:

https://en.wikipedia.org/wiki/Tiled_web_map

But I still have no idea how to determine the long/lat values of a suitable tile. Any help would be appreciated.

Thanks in Advance

You don't need to. Mapbox's API abstracts that away for you. Take a look here: https://www.mapbox.com/api-documentation/#retrieve-a-static-map-from-a-style

Upvotes: 2

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