.gitignore

node_modules
package-lock.json
output

alexmap.js

const { load } = require("@alex.garcia/observable-prerender");
const puppeteer = require("puppeteer");

async function main() {
    // let mapWidth = 3840 
    // let mapHeight = 2160
    let mapWidth = 1000
    let mapHeight = 750
    let startDate = "20200301"
    // let signal = "confirmed_7dav_incidence_num"
    // let signal = "part_time_work_prop"
    // let signal = "smoothed_adj_covid19"
    let signal = process.argv[2] || "confirmed_7dav_incidence_num" 
    const browser = await puppeteer.launch({
        defaultViewport: { width: mapWidth, height: mapHeight},
        args: [`--window-size=${mapWidth},${mapHeight}`],
    });
    const notebook = await load(
    "@codingwithfire/cmu-covidcast-api-map-maker",
    ["map"],
    { browser }
    );
    await notebook.redefine("date", startDate);
    const days = await notebook.value("days");
    console.log("rendering signal", signal)
    console.log("going to work on", days.length, "days")
    let i = 0
    for await (let day of days) {
        console.log("rendering", i, day)
        await notebook.redefine("mapWidth", mapWidth);
        await notebook.redefine("mapHeight", mapHeight);
        await notebook.redefine("date", day);
        await notebook.redefine("signal", signal);

        await notebook.screenshot("map", `output/${signal}_${("000" + i).slice(-3)}.png`);
        // await notebook.svg("map", `${county.name}.svg`);
        i++
    }
    console.log("FFMPEG COMMAND")
    console.log(`ffmpeg -framerate 15 -i output/${signal}_%03d.png -c:v libx264  -pix_fmt yuv420p output/${signal}.mp4`)
    await notebook.browser.close();
    
}
main();

package.json

{
  "name": "prerender",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@alex.garcia/observable-prerender": "0.0.2"
  }
}