Oliver Eyton-Williams ee1e8abd87

feat(curriculum): restore seed + solution to Chinese (#40683 )

* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>

2021-01-12 19:31:00 -07:00

2.5 KiB

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id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
587d7fa8367417b2b2512bcd	Create a Bar for Each Data Point in the Set	6	301482	create-a-bar-for-each-data-point-in-the-set

--description--

The last challenge added only one rectangle to the svg element to represent a bar. Here, you'll combine what you've learned so far about data(), enter(), and SVG shapes to create and append a rectangle for each data point in dataset.

A previous challenge showed the format for how to create and append a div for each item in dataset:

d3.select("body").selectAll("div")
  .data(dataset)
  .enter()
  .append("div")

There are a few differences working with rect elements instead of divs. The rects must be appended to an svg element, not directly to the body. Also, you need to tell D3 where to place each rect within the svg area. The bar placement will be covered in the next challenge.

--instructions--

Use the data(), enter(), and append() methods to create and append a rect for each item in dataset. The bars should display all on top of each other; this will be fixed in the next challenge.

--hints--

Your document should have 9 rect elements.

assert($('rect').length == 9);

Your code should use the data() method.

assert(code.match(/\.data/g));

Your code should use the enter() method.

assert(code.match(/\.enter/g));

Your code should use the append() method.

assert(code.match(/\.append/g));

--seed--

--seed-contents--

<body>
  <script>
    const dataset = [12, 31, 22, 17, 25, 18, 29, 14, 9];

    const w = 500;
    const h = 100;

    const svg = d3.select("body")
                  .append("svg")
                  .attr("width", w)
                  .attr("height", h);

    svg.selectAll("rect")
       // Add your code below this line



       // Add your code above this line
       .attr("x", 0)
       .attr("y", 0)
       .attr("width", 25)
       .attr("height", 100);
  </script>
</body>

--solutions--

<body>
  <script>
    const dataset = [12, 31, 22, 17, 25, 18, 29, 14, 9];

    const w = 500;
    const h = 100;

    const svg = d3.select("body")
                  .append("svg")
                  .attr("width", w)
                  .attr("height", h);

    svg.selectAll("rect")
       .data(dataset)
       .enter()
       .append("rect")
       .attr("x", 0)
       .attr("y", 0)
       .attr("width", 25)
       .attr("height", 100);
  </script>
</body>

2.5 KiB Raw Blame History