Files
freeCodeCamp/curriculum/challenges/english/04-data-visualization/data-visualization-with-d3/create-a-scatterplot-with-svg-circles.md
Nicholas Carrigan (he/him) 16e420021c chore: audit data visualisation challenges (#41336)
* chore(learn): audit d3 projects

* chore: audit data vis

* chore: audit json apis

* Update curriculum/challenges/english/04-data-visualization/data-visualization-projects/visualize-data-with-a-scatterplot-graph.md

Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>

* fix: apply suggestions

Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>

* fix: no colour backticks

Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>
Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

* Update curriculum/challenges/english/04-data-visualization/json-apis-and-ajax/get-geolocation-data-to-find-a-users-gps-coordinates.md

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>

Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>
Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>
2021-03-05 12:25:29 -07:00

2.3 KiB

id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
587d7fab367417b2b2512bd7 Create a Scatterplot with SVG Circles 6 301484 create-a-scatterplot-with-svg-circles

--description--

A scatter plot is another type of visualization. It usually uses circles to map data points, which have two values each. These values tie to the x and y axes, and are used to position the circle in the visualization.

SVG has a circle tag to create the circle shape. It works a lot like the rect elements you used for the bar chart.

--instructions--

Use the data(), enter(), and append() methods to bind dataset to new circle elements that are appended to the SVG canvas.

Note: The circles won't be visible because we haven't set their attributes yet. We'll do that in the next challenge.

--hints--

Your code should have 10 circle elements.

assert($('circle').length == 10);

--seed--

--seed-contents--

<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")
       // Add your code below this line



       // Add your code above this line

  </script>
</body>

--solutions--

<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")

  </script>
</body>