CODEWITHSUNDEEP
javascripthtmlgoogle-maps
sujith
sujith

Reputation: 2421

how does the google maps identifies the roads(paths)?

when i went through the source code of the google maps page i've realized that the whole map is formed by small tiles of images. But how does the javascript identifies the roads on the google maps to show the way from ourlocation to destination??

Upvotes: 0

Views: 476

Answers (2)

Taber
Taber

Reputation: 554

Google have several layers with information about streets, roads, etc... when you use google maps only show a "graphical representation" of their data in bitmap format, but they need a "vectorial" layer that we don't see it.

Calculate routing is a very complex infraestructure problem in GIS server, for example, with Geoserver and PostGIS you can use Dijkstra Routing with Pgdijkstra.

It's very complex question, for a short answer.

Upvotes: 0

MattP
MattP

Reputation: 2863

I couldn't tell you HOW it works, it is a very complex application but all the work is done on the server and the reason the page shows the map as images is purely down to the limited ways in which a browser can display content.

Upvotes: 1

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