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acme (189)

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Leon Brocard (aka acme) is an orange-loving Perl eurohacker with many varied contributions to the Perl community, including the GraphViz module on the CPAN. YAPC::Europe was all his fault. He is still looking for a Perl Monger group he can start which begins with the letter 'D'.

Journal of acme (189)

Wednesday June 20, 2007
10:58 AM

Encoding Latitudes and Longitudes

[ #33561 ]
I was browsing the Google Maps API Documentation and noticed this wonderful little feature, where you can encode latitudes and longitudes as strings:

// instead of this:
var polyline = new GPolyline([
    new GLatLng(37.4419, -122.1419),
    new GLatLng(37.4519, -122.1519),
    new GLatLng( 37.4619, -122.1819)
], "#FF0000", 10);

// you can use:
var encodedPolyline = new GPolyline.fromEncoded({
    color: "#FF0000",
    weight: 10,
    points: "yzocFzynhVq}@n}@o}@nzD",
    levels: "BBB",
    zoomFactor: 32,
    numLevels: 4

What the? Luckily they explain the encoding madness.

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