This is an example of streaming IEX financial data into the perspective viewer. Active 9:30 am to 4:00 pm EST.
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Perspective Streaming Example
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| license: apache-2.0 |
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| perspective-viewer { | |
| position: absolute; | |
| top: 0; | |
| left: 0; | |
| right: 0; | |
| bottom: 0; | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"> | |
| <script src="https://unpkg.com/@jpmorganchase/perspective/build/perspective.js"></script> | |
| <script src="https://unpkg.com/@jpmorganchase/perspective-viewer/build/perspective.view.js"></script> | |
| <script src="https://unpkg.com/@jpmorganchase/perspective-viewer-hypergrid/build/hypergrid.plugin.js"></script> | |
| <script src="https://unpkg.com/@jpmorganchase/perspective-viewer-highcharts/build/highcharts.plugin.js"></script> | |
| <script src="streaming.js"></script> | |
| <link rel='stylesheet' href="index.css"> | |
| <link rel='stylesheet' href="https://unpkg.com/@jpmorganchase/perspective-viewer/build/material.css" is="custom-style"> | |
| </head> | |
| <body> | |
| <perspective-viewer view="y_line" columns='["price"]' column-pivots='["symbol"]' limit="500"></perspective-viewer> | |
| </body> | |
| </html> |
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| var PUB_TOKEN = "pk_a3b8e89dc25140098066fdfbee19352b"; | |
| var IEX_URL = "https://cloud-sse.iexapis.com/beta/last?symbols=jpm,gs,bac&token=" + PUB_TOKEN; | |
| window.addEventListener("WebComponentsReady", function() { | |
| // Get element from the DOM. | |
| var elem = document.getElementsByTagName("perspective-viewer")[0]; | |
| // Add more rows every 50ms using the `update()` method on the `table` directly. | |
| var source = new EventSource(IEX_URL); | |
| var data = [] | |
| source.onmessage = function(event) { | |
| for(let ev of JSON.parse(event.data)){ | |
| data.push(ev); | |
| } | |
| elem.update(data); | |
| data = []; | |
| }; | |
| }); |
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