What to do with x to draw a horizontal line?

howToDrawALine.js

const 	EtherDream = require('./etherdream.js').EtherDream,
		numpoints = 35000;

console.log('Looking for EtherDream hosts...')
EtherDream.findFirst(function(all) {
	if (all.length == 0) {
		console.log('Didn\'t find any EtherDream on the network.');
		return;
	}

	EtherDream.connect(all[0].ip, all[0].port, function(conn) {

		console.log('Connected.');
		if (!conn) {
			return;
		}

		function pointStreamer(numpoints, callback) {
			var framedata = [];
			var x = 0;
			for(var k=0; k<numpoints; k++) {
				var pt = {};
				pt.x = x;
				x += 0.1;
				pt.y = 0;
				pt.r = 32768;
				pt.g = 0;
				pt.b = 0;
				framedata.push(pt);
			}
			callback(framedata);
		}

		conn.streamPoints(numpoints, pointStreamer.bind(this));
	});
})