-
Notifications
You must be signed in to change notification settings - Fork 0
/
index.js
44 lines (30 loc) · 1.07 KB
/
index.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
let fs = require('fs');
let simplify = require('@turf/simplify');
let truncate = require('@turf/truncate');
let union = require('@turf/union');
let geoJSONis = require('geojson-validation');
console.log('SUCCESS: require modules');
// Load file data
let shapeFileNames = fs.readdirSync('./shape-files');
let shape = {};
let shapeData = shapeFileNames.map(fileName => {
shape = JSON.parse(fs.readFileSync('./shape-files/' + fileName));
return shape.features[0].geometry;
});
console.log(shapeData[0]);
// Combine shapes
// console.log('is valide? ', geoJSONis.valid(shapeData[0]), geoJSONis.valid(shapeData[1]));
let finalShape = shapeData.reduce((total, current) => union.default(total, current));
console.log('total shape is: ', finalShape);
// Reduce precision to save file space
finalShape = truncate.default(finalShape, {
precision: 5,
coordinates: 2
});
// Simplify
finalShape = simplify.default(finalShape, {
tolerance: 0.01,
highQuality: true
});
// Write final result
fs.writeFileSync('./total-boundary-simplified.json', JSON.stringify(finalShape));