filtering habitable planets

Author: TidbitsJS

Planets/index.js

@@ -1,7 +1,7 @@
 const fs = require("fs");
 const parse = require("csv-parse");
 
-const results = [];
+const habitablePlanets = [];
 
 // Note - the file path that has been provided to createReadStream("Planets/kepler_data.csv") is realtive to the package.json file to run the program as `npm run kepler`.
 // For running the program as `node index.js` in Planets folder, change the path accordingly to createReadStream('kepler_data.csv')
@@ -16,12 +16,24 @@ fs.createReadStream("Planets/kepler_data.csv")
     })
   )
   .on("data", (data) => {
-    results.push(data); // data will be in json format
+    if (isHabitablePlanet(data)) {
+      habitablePlanets.push(data); // data will be in json format
+    }
   })
   .on("error", (err) => {
     console.error(err);
   })
   .on("end", () => {
-    console.log(results);
-    console.log("Done!");
+    console.log(habitablePlanets.map((planet) => planet["kepler_name"]));
+    console.log(`${habitablePlanets.length} habitable planets are found!`);
   });
+
+// Filter planets on the basis of how habitable they are
+function isHabitablePlanet(planet) {
+  return (
+    planet["koi_disposition"] === "CONFIRMED" &&
+    planet["koi_insol"] > 0.36 &&
+    planet["koi_insol"] < 1.11 &&
+    planet["koi_prad"] < 1.6
+  );
+}