Merge pull request #82 from two-n/master

debugging 10
two-n · Aug 31, 2018 · d0b5e54 · d0b5e54
2 parents 8878673 + 380c370
commit d0b5e54
Showing 1 changed file with 25 additions and 21 deletions.
diff --git a/read_and_reply.js b/read_and_reply.js
@@ -31,31 +31,35 @@ const parse = (text) => {
 const makeViz = (data) => {
 	console.log('vizing... ')
 
-	const xScale = scaleLinear()
-    .domain([data[0][0], data[data.length-1][0]])
-    .range([0, 10])
-	const xTicks = xScale.ticks( data.length/2 ).map(d => d.toString().slice(2,4))
-
-	const makeVizRow = (values, init='') => {
-		if(values.length === 0){
-		    return init
-		} else {
-		    return makeVizRow(values.slice(1), init+'\u3000'.repeat(Math.max(0, xScale(values[0][0]) - init.length))+'\uff0a')
+	if (data) {
+		const xScale = scaleLinear()
+	    .domain([data[0][0], data[data.length-1][0]])
+	    .range([0, 10])
+		const xTicks = xScale.ticks( data.length/2 ).map(d => d.toString().slice(2,4))
+
+		const makeVizRow = (values, init='') => {
+			if(values.length === 0){
+			    return init
+			} else {
+			    return makeVizRow(values.slice(1), init+'\u3000'.repeat(Math.max(0, xScale(values[0][0]) - init.length))+'\uff0a')
+			}
 		}
-	}
 
-	const yScale = scaleLinear().domain([max(data, d => d[1]), 0])
-	const yTicks = yScale.ticks( data.length/2 )
-	const yStep = yTicks[0] - yTicks[1]
+		const yScale = scaleLinear().domain([max(data, d => d[1]), 0])
+		const yTicks = yScale.ticks( data.length/2 )
+		const yStep = yTicks[0] - yTicks[1]
 
-	const xStep = Math.round(xScale.range()[1] / xTicks.length) - 2
-	let viz = yTicks.map(e => {
-	  let filtered = data.filter(d => d[1] >= +e && d[1] < +e + yStep)
-	  return `${format('.2s')(e)}| ${makeVizRow(filtered)}`
-	}).join('\n')
-	viz += '\n' + '\u3000'.repeat(2) + xScale.domain()[0].toString().slice(2,4) + '\uffe3'.repeat(xScale.range()[1]) + xScale.domain()[1].toString().slice(2,4)
+		const xStep = Math.round(xScale.range()[1] / xTicks.length) - 2
+		let viz = yTicks.map(e => {
+		  let filtered = data.filter(d => d[1] >= +e && d[1] < +e + yStep)
+		  return `${format('.2s')(e)}| ${makeVizRow(filtered)}`
+		}).join('\n')
+		viz += '\n' + '\u3000'.repeat(2) + xScale.domain()[0].toString().slice(2,4) + '\uffe3'.repeat(xScale.range()[1]) + xScale.domain()[1].toString().slice(2,4)
 
-	return viz
+		return viz
+	} else {
+		return
+	}
 }
 
 module.exports.read_and_reply = read_and_reply = (tweetEvent) => {