si2pem-reader

A small TypeScript client for public SI2PEM data, including WFS, WMS, installations, planned measurements, and laboratory reports.

Install

npm install si2pem-reader

ESM only.

Usage

import { SI2PEMClient, SI2PEM_WFS_FEATURE_TYPES, SI2PEM_WMS_LAYERS } from "si2pem-reader";

const si2pem = new SI2PEMClient();

const measurements = await si2pem.getFeatures({
  typeName: SI2PEM_WFS_FEATURE_TYPES.allMeasures,
  bbox: [19.8, 50.0, 20.2, 50.2],
});

const map = await si2pem.getWmsMap({
  layers: SI2PEM_WMS_LAYERS.measurementResults,
  bbox: [19.8, 50.0, 20.2, 50.2],
  width: 1024,
  height: 768,
  transparent: true,
});

Reports

Report discovery uses WFS GetFeature on public:measures_all. bbox is required in [west, south, east, north] order.

findLaboratoryReports() reads all matching measurement points across pages, then sorts and deduplicates reports by URL. count sets the number of measurement points requested per page (default 100); it does not limit the number of distinct reports returned. getLatestLaboratoryReport() uses a default page size of 10 and stops after the first page containing a matching report.

const report = await si2pem.getLatestLaboratoryReport({
  stationIdentity: "1862",
  bbox: [19.003611, 50.225, 19.043611, 50.265],
});

const antennas = await report?.readAntennas();