happytiff

HappyTIFF

A HappyTIFF is a GeoTIFF with extents that match exactly those of a web mercator ZXY tile.

This library can be used to verify that a GeoTIFF is a HappyTIFF.

happytiff CLI command:

Usage: happytiff <filepath>

# install happytiff
sudo npm install -g happytiff

# example run against a tif file
happytiff test/fixtures/91-50-7.valid.tif
{
  "z": 7,
  "x": 91,
  "y": 50
}

JS API:

var happytiff = require('happytiff');
var filepath = __dirname + '/test/fixtures/91-50-7.valid.tif';

happytiff.info(function(filepath, function(err, info) {
    console.log(info);
    // { x: 91, y: 50, z: 7 }
});

Source data

The test images in test/fixtures are open data from:

91-50-7.valid.tif   landsat 8 composite, USGS (http://www.usgs.gov)
invalid.tif         flanders composite, AGIV (https://www.agiv.be)