gdal3.js
Version:
gdal3.js is a port of Gdal applications (**gdal_translate**, **ogr2ogr**, **gdal_rasterize**, **gdalwarp**, **gdaltransform**) to Webassembly. It allows you to convert raster and vector geospatial data to various formats and coordinate systems.
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JavaScript
/* eslint-disable global-require */
/* eslint-disable func-names */
const isNode = Object.prototype.toString.call(typeof process !== 'undefined' ? process : 0) === '[object process]'; // https://github.com/iliakan/detect-node/blob/master/index.js
let Gdal;
let assert;
if (isNode) assert = require('chai').assert;
else assert = chai.assert;
describe('application / gdalinfo', function () {
before(async function () {
if (isNode) {
this.timeout(15000);
const dest = require('fs').mkdtempSync('/tmp/gdaljs');
const initGdalJs = require('../../../build/package/gdal3.coverage');
Gdal = await initGdalJs({ path: 'build/package', dest });
} else {
this.timeout(30000);
Gdal = await initGdalJs({ path: '../package', useWorker: false });
}
});
it('gdalinfo', async function () {
let file = 'data/simple-polygon-line-point.tif';
if (!isNode) {
const fileData = await fetch(file);
file = new File([await fileData.blob()], 'simple-polygon-line-point.tif');
} else file = `test/${file}`;
const result = await Gdal.open(file);
const firstDataset = result.datasets[0];
assert.strictEqual(firstDataset.pointer > 0, true, 'An error occurred while opening the tif file. (ptr == 0)');
const info = await Gdal.gdalinfo(firstDataset);
assert.strictEqual(info.bands.length === 4, true, `tif file does not have four layers. (bandCount == ${info.bands.length})`);
});
});