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CARTO VL: Open popup from clicking barchart
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Category chart | CARTO</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta charset="UTF-8"> | |
| <script src="https://libs.cartocdn.com/carto-vl/v1.2.4/carto-vl.min.js"></script> | |
| <script src="https://api.tiles.mapbox.com/mapbox-gl-js/v0.52.0/mapbox-gl.js"></script> | |
| <link href="https://api.tiles.mapbox.com/mapbox-gl-js/v0.52.0/mapbox-gl.css" rel="stylesheet" /> | |
| <link href="https://carto.com/developers/carto-vl/v1.2.4/examples/maps/style.css" rel="stylesheet"> | |
| <!-- Include Chart JS --> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.2/Chart.min.js"></script> | |
| </head> | |
| <body> | |
| <div id="map"></div> | |
| <aside class="toolbox chart-toolbox"> | |
| <div class="box"> | |
| <header> | |
| <h1>Region</h1> | |
| </header> | |
| <section> | |
| <canvas id="histogram" width="300" height="300"></canvas> | |
| </section> | |
| </div> | |
| </aside> | |
| <div id="loader"> | |
| <div class="CDB-LoaderIcon CDB-LoaderIcon--big"> | |
| <svg class="CDB-LoaderIcon-spinner" viewBox="0 0 50 50"> | |
| <circle class="CDB-LoaderIcon-path" cx="25" cy="25" r="20" fill="none"></circle> | |
| </svg> | |
| </div> | |
| </div> | |
| <script> | |
| const map = new mapboxgl.Map({ | |
| container: 'map', | |
| style: carto.basemaps.voyager, | |
| center: [42.31, 22.88], | |
| zoom: 2, | |
| hash: true | |
| }); | |
| const nav = new mapboxgl.NavigationControl({ | |
| showCompass: false | |
| }); | |
| map.addControl(nav, 'top-left'); | |
| carto.setDefaultAuth({ | |
| username: 'oboix', | |
| apiKey: 'default_public' | |
| }); | |
| // Define pop-up | |
| const popup = new mapboxgl.Popup({ | |
| closeButton: false, | |
| closeOnClick: false | |
| }); | |
| const ctx = document.getElementById('histogram').getContext('2d'); | |
| // Define the source | |
| const source = new carto.source.SQL('SELECT * FROM world_borders_6 LIMIT 20'); | |
| // Define the visualization | |
| const viz = new carto.Viz(` | |
| @v_histogram: viewportHistogram($iso3) | |
| color: #00718b | |
| width: 5 | |
| strokeWidth: 0.5 | |
| `); | |
| // Draw chart using Chart.js library (https://www.chartjs.org/) | |
| const chartOptionsDefault = { | |
| animation: { | |
| duration: 0 | |
| }, | |
| legend: { | |
| display: false | |
| }, | |
| scales: { | |
| yAxes: [{ | |
| gridLines: { | |
| drawBorder: false, | |
| display: false | |
| }, | |
| ticks: { | |
| suggestedMin: 1, | |
| beginAtZero: true, | |
| display: false | |
| } | |
| }], | |
| xAxes: [{ | |
| gridLines: { | |
| drawBorder: false, | |
| display: false | |
| }, | |
| ticks: { | |
| display: true, | |
| fontSize: 7, | |
| autoSkip: false, | |
| maxRotation: 0, | |
| minRotation: 0 | |
| }, | |
| barPercentage: 0.9, | |
| categoryPercentage: 1.0 | |
| }] | |
| }, | |
| onClick: function(e){ | |
| // get label clicked element | |
| selected_el = chart.getElementAtEvent(e) | |
| input = selected_el[0]._model.label | |
| return fetch(`https://oboix.carto.com/api/v2/sql?format=geojson&q=SELECT ST_Centroid(the_geom) as the_geom, name FROM world_borders_6 where iso3 = '${input}'`) | |
| .then((resp) => resp.json()) | |
| .then((response) => { | |
| openPopup(response.features[0]) | |
| }) | |
| } | |
| }; | |
| const chart = new Chart(ctx, { | |
| type: 'bar', | |
| options: chartOptionsDefault | |
| }); | |
| const layer = new carto.Layer('layer', source, viz); | |
| const interactivity = new carto.Interactivity(layer); | |
| const delay = 50; | |
| let clickedFeatureId = null; | |
| layer.addTo(map, 'watername_ocean'); | |
| layer.on('loaded', hideLoader); | |
| layer.on('updated', () => { | |
| // Save histogram variable | |
| const histogram = layer.viz.variables.v_histogram; | |
| // Get histogram data | |
| const histogramData = histogram.value; | |
| // Chart.js set up | |
| const labels = histogramData.map(elem => elem.x); | |
| const data = histogramData.map(elem => elem.y); | |
| const backgroundColor = '#00718b'; | |
| chart.data = { | |
| labels, | |
| datasets: [{ | |
| data, | |
| backgroundColor | |
| }] | |
| }; | |
| chart.update(); | |
| }); | |
| function hideLoader() { | |
| document.getElementById('loader').style.opacity = '0'; | |
| } | |
| function openPopup(features) { | |
| console.log(features) | |
| if (features) { | |
| popup.setHTML(` | |
| <div> | |
| <h3 class ="h3">${features.properties.name}</h3> | |
| </div> | |
| `); | |
| popup.setLngLat([features.geometry.coordinates[0], features.geometry.coordinates[1]]); | |
| console.log(popup.isOpen()) | |
| if (!popup.isOpen()) { | |
| popup.addTo(map); | |
| } | |
| } else { | |
| popup.remove(); | |
| } | |
| } | |
| </script> | |
| </body> | |
| </html> |
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