freeCodeCamp/curriculum/challenges/en/04-data-visualization/data-visualization-with-d3/add-labels-to-scatter-plot-circles.en.md

---
id: 587d7fab367417b2b2512bd9
title: Add Labels to Scatter Plot Circles
required:
  - src: 'https://cdnjs.cloudflare.com/ajax/libs/d3/4.3.0/d3.min.js'
challengeType: 6
---

## Description
<section id='description'>
You can add text to create labels for the points in a scatter plot.
The goal is to display the comma-separated values for the first (<code>x</code>) and second (<code>y</code>) fields of each item in <code>dataset</code>.
The <code>text</code> nodes need <code>x</code> and <code>y</code> attributes to position it on the SVG canvas. In this challenge, the <code>y</code> value (which determines height) can use the same value that the <code>circle</code> uses for its <code>cy</code> attribute. The <code>x</code> value can be slightly larger than the <code>cx</code> value of the <code>circle</code>, so the label is visible. This will push the label to the right of the plotted point.
</section>

## Instructions
<section id='instructions'>
Label each point on the scatter plot using the <code>text</code> elements. The text of the label should be the two values separated by a comma and a space. For example, the label for the first point is "34, 78". Set the <code>x</code> attribute so it's 5 units more than the value you used for the <code>cx</code> attribute on the <code>circle</code>. Set the <code>y</code> attribute the same way that's used for the <code>cy</code> value on the <code>circle</code>.
</section>

## Tests
<section id='tests'>

```yml
- text: Your code should have 10 <code>text</code> elements.
  testString: 'assert($(''text'').length == 10, ''Your code should have 10 <code>text</code> elements.'');'
- text: 'The first label should have text of "34, 78", an <code>x</code> value of 39, and a <code>y</code> value of 422.'
  testString: 'assert($(''text'').eq(0).text() == ''34, 78'' && $(''text'').eq(0).attr(''x'') == ''39'' && $(''text'').eq(0).attr(''y'') == ''422'', ''The first label should have text of "34, 78", an <code>x</code> value of 39, and a <code>y</code> value of 422.'');'
- text: 'The second label should have text of "109, 280", an <code>x</code> value of 114, and a <code>y</code> value of 220.'
  testString: 'assert($(''text'').eq(1).text() == ''109, 280'' && $(''text'').eq(1).attr(''x'') == ''114'' && $(''text'').eq(1).attr(''y'') == ''220'', ''The second label should have text of "109, 280", an <code>x</code> value of 114, and a <code>y</code> value of 220.'');'
- text: 'The third label should have text of "310, 120", an <code>x</code> value of 315, and a <code>y</code> value of 380.'
  testString: 'assert($(''text'').eq(2).text() == ''310, 120'' && $(''text'').eq(2).attr(''x'') == ''315'' && $(''text'').eq(2).attr(''y'') == ''380'', ''The third label should have text of "310, 120", an <code>x</code> value of 315, and a <code>y</code> value of 380.'');'
- text: 'The fourth label should have text of "79, 411", an <code>x</code> value of 84, and a <code>y</code> value of 89.'
  testString: 'assert($(''text'').eq(3).text() == ''79, 411'' && $(''text'').eq(3).attr(''x'') == ''84'' && $(''text'').eq(3).attr(''y'') == ''89'', ''The fourth label should have text of "79, 411", an <code>x</code> value of 84, and a <code>y</code> value of 89.'');'
- text: 'The fifth label should have text of "420, 220", an <code>x</code> value of 425, and a <code>y</code> value of 280.'
  testString: 'assert($(''text'').eq(4).text() == ''420, 220'' && $(''text'').eq(4).attr(''x'') == ''425'' && $(''text'').eq(4).attr(''y'') == ''280'', ''The fifth label should have text of "420, 220", an <code>x</code> value of 425, and a <code>y</code> value of 280.'');'
- text: 'The sixth label should have text of "233, 145", an <code>x</code> value of 238, and a <code>y</code> value of 355.'
  testString: 'assert($(''text'').eq(5).text() == ''233, 145'' && $(''text'').eq(5).attr(''x'') == ''238'' && $(''text'').eq(5).attr(''y'') == ''355'', ''The sixth label should have text of "233, 145", an <code>x</code> value of 238, and a <code>y</code> value of 355.'');'
- text: 'The seventh label should have text of "333, 96", an <code>x</code> value of 338, and a <code>y</code> value of 404.'
  testString: 'assert($(''text'').eq(6).text() == ''333, 96'' && $(''text'').eq(6).attr(''x'') == ''338'' && $(''text'').eq(6).attr(''y'') == ''404'', ''The seventh label should have text of "333, 96", an <code>x</code> value of 338, and a <code>y</code> value of 404.'');'
- text: 'The eighth label should have text of "222, 333", an <code>x</code> value of 227, and a <code>y</code> value of 167.'
  testString: 'assert($(''text'').eq(7).text() == ''222, 333'' && $(''text'').eq(7).attr(''x'') == ''227'' && $(''text'').eq(7).attr(''y'') == ''167'', ''The eighth label should have text of "222, 333", an <code>x</code> value of 227, and a <code>y</code> value of 167.'');'
- text: 'The ninth label should have text of "78, 320", an <code>x</code> value of 83, and a <code>y</code> value of 180.'
  testString: 'assert($(''text'').eq(8).text() == ''78, 320'' && $(''text'').eq(8).attr(''x'') == ''83'' && $(''text'').eq(8).attr(''y'') == ''180'', ''The ninth label should have text of "78, 320", an <code>x</code> value of 83, and a <code>y</code> value of 180.'');'
- text: 'The tenth label should have text of "21, 123", an <code>x</code> value of 26, and a <code>y</code> value of 377.'
  testString: 'assert($(''text'').eq(9).text() == ''21, 123'' && $(''text'').eq(9).attr(''x'') == ''26'' && $(''text'').eq(9).attr(''y'') == ''377'', ''The tenth label should have text of "21, 123", an <code>x</code> value of 26, and a <code>y</code> value of 377.'');'

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='html-seed'>

```html
<body>
  <script>
    const dataset = [
                  [ 34,    78 ],
                  [ 109,   280 ],
                  [ 310,   120 ],
                  [ 79,    411 ],
                  [ 420,   220 ],
                  [ 233,   145 ],
                  [ 333,   96 ],
                  [ 222,   333 ],
                  [ 78,    320 ],
                  [ 21,    123 ]
                ];
    
    
    const w = 500;
    const h = 500;
    
    const svg = d3.select("body")
                  .append("svg")
                  .attr("width", w)
                  .attr("height", h);
    
    svg.selectAll("circle")
       .data(dataset)
       .enter()
       .append("circle")
       .attr("cx", (d, i) => d[0])
       .attr("cy", (d, i) => h - d[1])
       .attr("r", 5);
    
    svg.selectAll("text")
       .data(dataset)
       .enter()
       .append("text")
       // Add your code below this line
       
       
       
       // Add your code above this line
  </script>
</body>
```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>