How to use the @finos/perspective.table function in @finos/perspective

To help you get started, we’ve selected a few @finos/perspective examples, based on popular ways it is used in public projects.

Secure your code as it's written. Use Snyk Code to scan source code in minutes - no build needed - and fix issues immediately.

github finos / perspective / packages / perspective-bench / src / js / bench.js View on Github external
exports.run = async function run(version, benchmark, ...cmdArgs) {
    const options = cmdArgs.splice(cmdArgs.length - 1, 1)[0];
    const host = await new_host();
    // const port = host._server.address().port;

    let benchmark_name = options.output || "benchmark";

    console.log(chalk`\n{whiteBright Running v.${version} (${cmdArgs.join(",")})}`);

    let version_index = 1;
    let table = undefined;
    if (options.read && fs.existsSync(`${benchmark_name}.arrow`)) {
        const buffer = fs.readFileSync(`${benchmark_name}.arrow`, null).buffer;
        table = perspective.table(buffer);
        const view = table.view({row_pivots: ["version"], columns: []});
        const json = await view.to_json();
        version_index = json.length;
    }

    const RUN_TEST = fs.readFileSync(path.resolve(benchmark)).toString();
    let bins;

    if (options.puppeteer) {
        const puppeteer = require("puppeteer");
        let browser = await puppeteer.launch({
            headless: true,
            args: ["--no-sandbox"]
        });

        bins = await run_version(browser, cmdArgs, RUN_TEST);
github finos / perspective / examples / remote / server.js View on Github external
async function init_dynamic() {
    // Create a `table`.
    const table = perspective.table(newRows(TABLE_SIZE), {limit: TABLE_SIZE});

    // The `table` needs to be registered to a name with the Perspective
    // `WebSocketServer` in order for the client to get a proxy handle to it.
    host.host_view("data_source_one", table.view());

    // Loop and update the `table` oocasionally.
    (function postRow() {
        table.update(newRows());
        setTimeout(postRow, TICK_RATE);
    })();
}
github finos / perspective / packages / perspective-cli / src / js / utils.js View on Github external
function infer_table(buffer) {
    if (buffer.slice(0, 6).toString() === "ARROW1") {
        console.log("Loaded Arrow");
        return table(buffer.buffer);
    } else {
        let text = buffer.toString();
        try {
            let json = JSON.parse(text);
            console.log("Loaded JSON");
            return table(json);
        } catch (e) {
            console.log("Loaded CSV");
            return table(text);
        }
    }
}
github finos / perspective / packages / perspective-cli / src / js / utils.js View on Github external
function infer_table(buffer) {
    if (buffer.slice(0, 6).toString() === "ARROW1") {
        console.log("Loaded Arrow");
        return table(buffer.buffer);
    } else {
        let text = buffer.toString();
        try {
            let json = JSON.parse(text);
            console.log("Loaded JSON");
            return table(json);
        } catch (e) {
            console.log("Loaded CSV");
            return table(text);
        }
    }
}
github finos / perspective / packages / perspective-cli / src / js / utils.js View on Github external
function infer_table(buffer) {
    if (buffer.slice(0, 6).toString() === "ARROW1") {
        console.log("Loaded Arrow");
        return table(buffer.buffer);
    } else {
        let text = buffer.toString();
        try {
            let json = JSON.parse(text);
            console.log("Loaded JSON");
            return table(json);
        } catch (e) {
            console.log("Loaded CSV");
            return table(text);
        }
    }
}
github finos / perspective / examples / remote / server.js View on Github external
async function init_cached() {
    await populate_cache();
    const tbl = perspective.table(newRows(TABLE_SIZE), {limit: TABLE_SIZE});
    host.host_view("data_source_one", tbl.view());
    (function postRow() {
        const entry = __CACHE__[Math.floor(Math.random() * __CACHE__.length)];
        tbl.update(entry);
        setTimeout(postRow, TICK_RATE);
    })();
}
github finos / perspective / examples / remote / server.js View on Github external
async function newArrow(total_rows) {
    var table = perspective.table(newRows(total_rows));
    var vw = table.view();
    var arrow = await vw.to_arrow();
    vw.delete();
    table.delete();
    return arrow;
}
github finos / perspective / packages / perspective-cli / src / js / index.js View on Github external
async function host(filename, options) {
    let files = [path.join(__dirname, "html")];
    if (options.assets) {
        files = [options.assets, ...files];
    }
    const server = new WebSocketServer({assets: files, port: options.port});
    let file;
    if (filename) {
        file = table(fs.readFileSync(filename).toString());
    } else {
        file = await read_stdin();
    }
    server.host_table("data_source_one", file);
    if (options.open) {
        open_browser(options.port);
    }
}