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---
id: 5d8a4cfbe6b6180ed9a1ca37
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title: Step 90
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challengeType: 0
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dashedName: step-90
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---
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# --description--
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Since the domain has three items, the range also needs to have three items. If it had less, the values would repeat, putting the same color on the pie chart multiple times. Add the `range` function to the scale and pass it an array with your three color variables. Put them in the same order in which they are defined.
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# --hints--
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test-text
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```js
assert(
/\.domain\(data\[8\]\.followers\)\s*\.\s*range\s*\(\s*\[\s*twitterColor\s*,\s*tumblrColor\s*,\s*instagramColor\s*\]\s*\)/g.test(
code
)
);
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```
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# --seed--
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## --before-user-code--
```html
<!DOCTYPE html>
< html >
< head >
< title > D3 Dashboard< / title >
< style >
body {
background-color: #ccc ;
padding: 100px 10px;
}
.dashboard {
width: 980px;
height: 500px;
background-color: white;
box-shadow: 5px 5px 5px 5px #888 ;
margin: auto;
display: flex;
align-items: center;
}
< / style >
< / head >
< body >
< div class = "dashboard" > < / div >
< / body >
< / html >
```
## --seed-contents--
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```html
< script >
const data = [
{ year: 2012, followers: { twitter: 2594, tumblr: 401, instagram: 83 }},
{ year: 2013, followers: { twitter: 3049, tumblr: 440, instagram: 192 }},
{ year: 2014, followers: { twitter: 3511, tumblr: 415, instagram: 511 }},
{ year: 2015, followers: { twitter: 3619, tumblr: 492, instagram: 1014 }},
{ year: 2016, followers: { twitter: 4046, tumblr: 543, instagram: 2066 }},
{ year: 2017, followers: { twitter: 3991, tumblr: 701, instagram: 3032 }},
{ year: 2018, followers: { twitter: 3512, tumblr: 1522, instagram: 4512 }},
{ year: 2019, followers: { twitter: 3274, tumblr: 1989, instagram: 4715 }},
{ year: 2020, followers: { twitter: 2845, tumblr: 2040, instagram: 4801 }}
];
< / script >
< script >
const svgMargin = 70,
svgWidth = 700,
svgHeight = 500,
twitterColor = '#7cd9d1 ',
tumblrColor = '#f6dd71 ',
instagramColor = '#fd9b98 ';
const lineGraph = d3.select('.dashboard')
.append('svg')
.attr('width', svgWidth)
.attr('height', svgHeight);
const yScale = d3.scaleLinear()
.domain([0, 5000])
.range([svgHeight - svgMargin, svgMargin]);
const xScale = d3.scaleLinear()
.domain([2012, 2020])
.range([svgMargin, svgWidth - svgMargin]);
const yAxis = d3.axisLeft(yScale)
.ticks(6, '~s');
const xAxis = d3.axisBottom(xScale)
.tickFormat(d3.format(''))
.tickPadding(10);
lineGraph.append('g')
.call(yAxis)
.attr('transform', `translate(${svgMargin}, 0)` )
.style('font', '10px verdana');
lineGraph.append('g')
.call(xAxis)
.attr('transform', `translate(0, ${svgHeight - svgMargin})` )
.selectAll('text')
.style('transform', 'translate(-12px, 0) rotate(-50deg)')
.style('text-anchor', 'end')
.style('cursor', 'pointer')
.style('font', '10px verdana')
const twitterLine = d3.line()
.x(d => xScale(d.year))
.y(d => yScale(d.followers.twitter));
lineGraph.append('path')
.attr('d', twitterLine(data))
.attr('stroke', twitterColor)
.attr('stroke-width', 3)
.attr('fill', 'transparent');
const tumblrLine = d3.line()
.x(d => xScale(d.year))
.y(d => yScale(d.followers.tumblr));
lineGraph.append('path')
.attr('d', tumblrLine(data))
.attr('stroke', tumblrColor)
.attr('stroke-width', 3)
.attr('fill', 'transparent');
const instagramLine = d3.line()
.x(d => xScale(d.year))
.y(d => yScale(d.followers.instagram));
lineGraph.append('path')
.attr('d', instagramLine(data))
.attr('stroke', instagramColor)
.attr('stroke-width', 3)
.attr('fill', 'transparent');
lineGraph.selectAll('twitter-circles')
.data(data)
.enter()
.append('circle')
.attr('cx', d => xScale(d.year))
.attr('cy', d => yScale(d.followers.twitter))
.attr('r', 6)
.attr('fill', 'white')
.attr('stroke', twitterColor)
.style('cursor', 'pointer')
lineGraph.selectAll('tumblr-circles')
.data(data)
.enter()
.append('circle')
.attr('cx', d => xScale(d.year))
.attr('cy', d => yScale(d.followers.tumblr))
.attr('r', 6)
.attr('fill', 'white')
.attr('stroke', tumblrColor)
.style('cursor', 'pointer')
lineGraph.selectAll('instagram-circles')
.data(data)
.enter()
.append('circle')
.attr('cx', d => xScale(d.year))
.attr('cy', d => yScale(d.followers.instagram))
.attr('r', 6)
.attr('fill', 'white')
.attr('stroke', instagramColor)
.style('cursor', 'pointer')
const rightDashboard = d3.select('.dashboard')
.append('div');
const pieGraph = rightDashboard.append('svg')
.attr('width', 200)
.attr('height', 200)
const pieArc = d3.arc()
.outerRadius(100)
.innerRadius(0);
const pieColors = d3.scaleOrdinal()
.domain(data[8].followers)
< / script >
```
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# --solutions--
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```html
< script >
const data = [
{ year: 2012, followers: { twitter: 2594, tumblr: 401, instagram: 83 }},
{ year: 2013, followers: { twitter: 3049, tumblr: 440, instagram: 192 }},
{ year: 2014, followers: { twitter: 3511, tumblr: 415, instagram: 511 }},
{ year: 2015, followers: { twitter: 3619, tumblr: 492, instagram: 1014 }},
{ year: 2016, followers: { twitter: 4046, tumblr: 543, instagram: 2066 }},
{ year: 2017, followers: { twitter: 3991, tumblr: 701, instagram: 3032 }},
{ year: 2018, followers: { twitter: 3512, tumblr: 1522, instagram: 4512 }},
{ year: 2019, followers: { twitter: 3274, tumblr: 1989, instagram: 4715 }},
{ year: 2020, followers: { twitter: 2845, tumblr: 2040, instagram: 4801 }}
];
< / script >
< script >
const svgMargin = 70,
svgWidth = 700,
svgHeight = 500,
twitterColor = '#7cd9d1 ',
tumblrColor = '#f6dd71 ',
instagramColor = '#fd9b98 ';
const lineGraph = d3.select('.dashboard')
.append('svg')
.attr('width', svgWidth)
.attr('height', svgHeight);
const yScale = d3.scaleLinear()
.domain([0, 5000])
.range([svgHeight - svgMargin, svgMargin]);
const xScale = d3.scaleLinear()
.domain([2012, 2020])
.range([svgMargin, svgWidth - svgMargin]);
const yAxis = d3.axisLeft(yScale)
.ticks(6, '~s');
const xAxis = d3.axisBottom(xScale)
.tickFormat(d3.format(''))
.tickPadding(10);
lineGraph.append('g')
.call(yAxis)
.attr('transform', `translate(${svgMargin}, 0)` )
.style('font', '10px verdana');
lineGraph.append('g')
.call(xAxis)
.attr('transform', `translate(0, ${svgHeight - svgMargin})` )
.selectAll('text')
.style('transform', 'translate(-12px, 0) rotate(-50deg)')
.style('text-anchor', 'end')
.style('cursor', 'pointer')
.style('font', '10px verdana')
const twitterLine = d3.line()
.x(d => xScale(d.year))
.y(d => yScale(d.followers.twitter));
lineGraph.append('path')
.attr('d', twitterLine(data))
.attr('stroke', twitterColor)
.attr('stroke-width', 3)
.attr('fill', 'transparent');
const tumblrLine = d3.line()
.x(d => xScale(d.year))
.y(d => yScale(d.followers.tumblr));
lineGraph.append('path')
.attr('d', tumblrLine(data))
.attr('stroke', tumblrColor)
.attr('stroke-width', 3)
.attr('fill', 'transparent');
const instagramLine = d3.line()
.x(d => xScale(d.year))
.y(d => yScale(d.followers.instagram));
lineGraph.append('path')
.attr('d', instagramLine(data))
.attr('stroke', instagramColor)
.attr('stroke-width', 3)
.attr('fill', 'transparent');
lineGraph.selectAll('twitter-circles')
.data(data)
.enter()
.append('circle')
.attr('cx', d => xScale(d.year))
.attr('cy', d => yScale(d.followers.twitter))
.attr('r', 6)
.attr('fill', 'white')
.attr('stroke', twitterColor)
.style('cursor', 'pointer')
lineGraph.selectAll('tumblr-circles')
.data(data)
.enter()
.append('circle')
.attr('cx', d => xScale(d.year))
.attr('cy', d => yScale(d.followers.tumblr))
.attr('r', 6)
.attr('fill', 'white')
.attr('stroke', tumblrColor)
.style('cursor', 'pointer')
lineGraph.selectAll('instagram-circles')
.data(data)
.enter()
.append('circle')
.attr('cx', d => xScale(d.year))
.attr('cy', d => yScale(d.followers.instagram))
.attr('r', 6)
.attr('fill', 'white')
.attr('stroke', instagramColor)
.style('cursor', 'pointer')
const rightDashboard = d3.select('.dashboard')
.append('div');
const pieGraph = rightDashboard.append('svg')
.attr('width', 200)
.attr('height', 200)
const pieArc = d3.arc()
.outerRadius(100)
.innerRadius(0);
const pieColors = d3.scaleOrdinal()
.domain(data[8].followers)
.range([twitterColor, tumblrColor, instagramColor]);
< / script >
```
