/
simplifyMaps.js
146 lines (132 loc) · 3.77 KB
/
simplifyMaps.js
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const simplify = require('simplify-geojson')
const fs = require('fs-extra');
// let original = fs.readFileSync('./public/data/cartoweb_france_1789_geojson_original.geojson', 'utf8');
let output = `./public/data/map_backgrounds/map_france_1789.geojson`;
let original = fs.readFileSync('./public/data/map_backgrounds/map_cartoweb_world_1789_29juillet2021_mixte4326_geojson_UTF8.geojson', 'utf8');
let originalLength = original.length
console.log('length before : ', originalLength);
try {
original = JSON.parse(original)
} catch(e) {
console.log('damn')
}
const acceptedProvinces = [
'Espagne',
'Grande-Bretagne',
'Isles de Corse',
'Sardaigne',
'Royaume de Piémont-Sardaigne',
'République de Gènes',
'Duché de Massa et Carrare',
'Toscane',
'Pays-Bas autrichiens',
'Liège',
'Swiss Cantons',
"Autriche",
'Small States',
'Württemberg',
'Nassau',
'Trier',
'Wittelsbach',
'Cologne',
'Hesse-Darmstadt',
'Prusse',
'Hanover',
'République de Lucques',
'Etats pontificaux',
'République de Venise',
'Bavaria',
'Saxony-Poland-Lithuania',
'Portugal',
'Parma Piacenza',
'Modena',
'Hesse-Kassel',
'Brandenburg-Bayreuth',
'Salzburg',
'Meiningen',
'Eisenach',
'Brandenburg-Ansbach',
'Nuremberg',
'Porrentruy',
'Baden',
'Mainz',
'Andorra',
'Brunswick-Wolfenbuttel',
'Coburg',
'Saxe-Hildburghausen',
'Altenburg',
'Waldeck',
'Lippe',
'Zerbst',
'Dessau',
'Köthen',
'Bernburg',
'Schwabisches Hall',
'Rothenburg',
'Sulzbach',
'Weimar',
'Mühlhausen',
'Rottweil',
'Sigmaringen',
'Zweibrücken',
'Überlingen',
'Hechingen',
'Orange'
]
const acceptedDominants = [
'France',
'Royaume de Piémont-Sardaigne',
'Provinces-Unies'
]
// let simplified = simplify(original, .003); // works
let simplified = {
...original,
features: original.features
.filter(feature => acceptedDominants.includes(feature.properties.dominant) || acceptedProvinces.includes(feature.properties.shortname))
.map(feature => {
// handling a weird bug
if (feature.properties.shortname === 'Normandie') {
return simplify(feature, .03);
// no simplification
} else if (['Poitou', 'Aunis', 'Saintonge', 'Bretagne', 'Anjou', 'Saumurois', 'Angoumois'].includes(feature.properties.shortname)) {
return feature;
}
// simplification maximum
return simplify(feature, .02); // works
// return simplify(feature, .005); // works
})
}
simplified = JSON.stringify(simplified);
console.log('length after : ', simplified.length, ', gain : ', -parseInt((1 - simplified.length / originalLength) * 100) + '%' );
fs.writeFileSync(output, simplified, 'utf8')
/**
* WORLD MAP
*/
// original = fs.readFileSync('./public/data/cartoweb_world_1789_29juillet2021_mixte4326_geojson_UTF8.geojson', 'utf8')
// output = `./public/data/world_1789_map.geojson`;
// originalLength = original.length
// console.log('length before : ', originalLength);
// try {
// original = JSON.parse(original)
// } catch(e) {
// console.log('damn')
// }
// simplified = {
// ...original,
// features: original.features.map(feature => {
// // handling a weird bug
// if (feature.properties.shortname === 'Normandie') {
// return simplify(feature, .03);
// // no simplification
// }/* else if (['Poitou', 'Aunis', 'Saintonge', 'Bretagne', 'Anjou', 'Saumurois'].includes(feature.properties.shortname)) {
// return feature;
// } else {
// console.log(feature.properties.shortname)
// }*/
// // simplification maximum
// return simplify(feature, .001); // works
// })
// }
// simplified = JSON.stringify(simplified);
// console.log('length after : ', simplified.length, ', gain : ', -parseInt((1 - simplified.length / originalLength) * 100) + '%' );
// fs.writeFileSync(output, simplified, 'utf8')