@cherie-xf/lit-chart
v0.0.3
Published
The simplest and useful Web Component for DataSource based ECharts(5.0.0^) [Apache Echarts](https://github.com/apache/echarts) ### Introduce
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lit-chart
The simplest and useful Web Component for DataSource based ECharts(5.0.0^) Apache Echarts
Introduce
- Components are built with LitElement
- Code bunlder and dev server are provided by Vite
Install
Once you've cloned the repo, run the following command.
npm install @cherie-xf/lit-chartUseage Examples
Simple Examples
It's recommended to use dataset to brings convenience in data management separated with styles and enabq data reuse by different series types.
<nw-chart id="line-chart"></nw-chart>
<script>
let type = 'line';
let theme = 'dark';
const dataset = {
source: [
['users', 'Mon', 'Tue', 'Wen', 'Thu', 'Fri', 'Sat', 'Sun'],
['user1', 120, 132, 101, 134, 90, 230, 210],
['user2', 220, 182, 191, 234, 290, 330, 310],
['user3', 150, 232, 201, 154, 190, 330, 410],
['user4', 320, 332, 301, 334, 390, 330, 320],
['user5', 820, 932, 901, 934, 1290, 1330, 1320]
]
};
const dom = document.querySelector('#line-chart');
dom.type = type;
dom.theme = theme;
dom.chartDataset = dataset;
dom.seriesLayoutBy = 'row';
</script>
<style>
#line-chart{
width: 100%;
height: 400px;
}
</style>Trantional way to set data in option
<nw-chart id="line-chart-style"></nw-chart>
<script>
let type = 'line';
let theme = 'dark';
const chartData = {
xAxis: {
data: [...Array(31).keys()]
},
series: [{
name: "number of views",
type: "line",
itemStyle: {
color: "#6f7de3",
},
markPoint: {
label: {
color: '#fff'
},
data: [{
type: 'max',
}, {
type: 'min',
}]
},
data: [
509, 917, 2455, 2610, 2719, 3033, 3044, 3085, 2708, 2809, 2117,2000,1455,1210,719,
733,944,2285,2208,3372,3936,3693,2962,2810,3519,2455,2610,2719,2484,2078
],
}, {
name: "number of order",
type: "line",
itemStyle: {
color: "#c257F6",
},
markPoint: {
label: {
color: '#fff'
},
data: [{
type: 'max',
}, {
type: 'min',
}]
},
data: [
2136,3693,2962,3810,3519,3484,3915,3823,3455,4310,4019,3433,3544,3885,4208,3372,
3484,3915,3748,3675,4009,4433,3544,3285,4208,3372,3484,3915,3823,4265,4298
]
}, ]
}
const dom = document.querySelector('#line-chart-style');
dom.type = type;
dom.theme = theme;
dom.chartData = chartData;
</script>
<style>
#line-chart-style{
width: 100%;
height: 400px;
}
</style>Show No Data
<nw-button id="no-data-button"> Click to toggle show No Data</nw-button>
<nw-chart id="no-data-chart"></nw-chart>
<script>
let noData = false;
const dataset = {
source: [
['app','sessions'],
['Video/Audio', 1103],
['General.Interest', 839],
['Web.Client', 140],
['Collaboration', 298],
['Update', 1099],
['Web.Others', 97],
['Social.Media', 1474],]
};
const dom = document.querySelector('#no-data-chart');
dom.type = 'donut';
dom.chartDataset = dataset;
const sumNum = dataset.source.slice(1).reduce((val, row) => val += Number(row[1]), 0)
const titleText = 'Sessions by Applications'
dom.legendFormat = '{percent} {name} ({value|number})';
dom.pieTitle = {
text: '{a|' + sumNum + '}\n{b|' + titleText + '}',
textStyle: {
rich: {
a: {
fontSize: 18,
color: '#999',
fontWeight: '600',
},
b: {
fontSize: 10,
color: '#999',
padding: [5, 0]
}
}
}
}
const onDataBtn = document.querySelector('#no-data-button');
onDataBtn.addEventListener('click', (e) => {console.log(e)
noData = !noData;
dom.noData = noData;
if(!noData){
dom.chartDataset = Object.assign({}, dataset);
}
});
</script>
<style>
#no-data-chart{
width: 100%;
height: 400px;
}
</style>Bar chart Horizontal
<nw-button id="horizontal-button"> Click to toggle horizontal</nw-button>
<nw-chart id="bar-horizontal-chart"></nw-chart>
<script>
const dataset = {
source: [
['product','score'],
['Matcha Latte',89.3 ],
['Milk Tea',57.1 ],
['Cheese Cocoa',74.4 ],
['Cheese Brownie',50.1 ],
['Matcha Cocoa',89.7 ],
['Tea',68.1 ],
['Orange Juice',19.6 ],
['Lemon Juice',10.6 ],
['Walnut Brownie',32.7 ]
]
};
const dom = document.querySelector('#bar-horizontal-chart');
const horizontalBtn = document.querySelector('#horizontal-button');
let isHorizontal = true;
horizontalBtn.addEventListener('click', (e) => {console.log(e)
isHorizontal = !isHorizontal;
dom.barHorizontal = isHorizontal;
});
dom.barHorizontal = isHorizontal;
dom.type = 'bar';
dom.chartDataset = dataset;
</script>
<style>
#bar-horizontal-chart{
width: 100%;
height: 400px;
}
</style>Lenged Format
<nw-chart id="legend-format-chart"></nw-chart>
<script>
const dataset = {
source: [
['app','bandwidth'],
['Video/Audio', 4369853248],
['General.Interest', 320065743],
['Web.Client', 296712124],
['Collaboration', 121727840],
['Update', 120717549],
['Web.Others', 119950230],
['Social.Media', 104562104],
['Storage.Backup', 69489727],
['Email', 67417552],
['Network.Service', 47828200],
['Proxy', 32291625],
['Business', 3926503],
['Botnet', 2048437],
['Remote.Access', 1937289],
['Cloud.IT', 910802],
['VoIP', 103774]]
};
const dom = document.querySelector('#legend-format-chart');
dom.type = 'donut';
dom.chartDataset = dataset;
dom.legendFormat = '{percent} {name} ({value|bytes})';
</script>
<style>
#legend-format-chart{
width: 100%;
height: 400px;
}
</style>Label Format
<nw-chart id="label-format-chart"></nw-chart>
<script>
const dataset = {
source: [
['app','bandwidth'],
['Video/Audio', 4369853248],
['General.Interest', 320065743],
['Web.Client', 296712124],
['Collaboration', 121727840],
['Update', 120717549],
['Web.Others', 119950230],
['Social.Media', 104562104],
['Storage.Backup', 69489727],
['Email', 67417552],
['Network.Service', 47828200],
['Proxy', 32291625],
['Business', 3926503],
['Botnet', 2048437],
['Remote.Access', 1937289],
['Cloud.IT', 910802],
['VoIP', 103774]]
};
const dom = document.querySelector('#label-format-chart');
dom.type = 'bar';
dom.barHorizontal = false;
dom.chartDataset = dataset;
dom.axisLabelFormat = 'bytes';
</script>
<style>
#label-format-chart{
width: 100%;
height: 400px;
}
</style>Pie Centre Title
<nw-chart id="pie-title-chart"></nw-chart>
<script>
const dataset = {
source: [
['app','sessions'],
['Video/Audio', 1103],
['General.Interest', 839],
['Web.Client', 140],
['Collaboration', 298],
['Update', 1099],
['Web.Others', 97],
['Social.Media', 1474],]
};
const dom = document.querySelector('#pie-title-chart');
dom.type = 'donut';
dom.chartDataset = dataset;
const sumNum = dataset.source.slice(1).reduce((val, row) => val += Number(row[1]), 0)
const titleText = 'Sessions by Applications'
dom.legendFormat = '{percent} {name} ({value|number})';
dom.pieTitle = {
text: '{a|' + sumNum + '}\n{b|' + titleText + '}',
textStyle: {
rich: {
a: {
fontSize: 18,
color: '#999',
fontWeight: '600',
},
b: {
fontSize: 10,
color: '#999',
padding: [5, 0]
}
}
}
}
</script>
<style>
#pie-title-chart{
width: 100%;
height: 400px;
}
</style>Two Directions Line Chart
<nw-chart id="two-driections-line-chart"></nw-chart>
<script>
const dataset = {
source: [
['hodex', 'traffic_out', 'traffic_in'],
['2021-08-04 12:00', 882631069, 2409598028],
['2021-08-05 12:00', 599132216, 2034742409],
['2021-08-05 13:00', 1013432572, 2412315785],
['2021-08-05 15:00', 323660103, 1465572402],
['2021-08-05 16:00', 1107409869, 2343007502],
['2021-08-07 17:00', 596405933, 2020447260],
['2021-08-07 18:00', 1016775704, 2428736055],
]
};
const dom = document.querySelector('#two-driections-line-chart');
dom.type = 'twoDirectionsArea';
dom.chartDataset = dataset;
dom.axisLabelFormat= 'bytes';
</script>
<style>
#two-driections-line-chart{
width: 100%;
height: 400px;
}
</style>Heatmap Chart
<nw-chart id="heatmap-chart"></nw-chart>
<script>
const dataset = {
source:[
['Day', 'City', 'Number'],
['Mon', 'BeiJing', 1000],
['Mon', 'HangZhou', 700],
['Tue', 'ChengDu', 500],
['Tue', 'ShenZheng', 200],
['Tue', 'ShangHai', 400],
['Wen', 'ChangChun', 100],
['Wen', 'HangZhou', 800],
['Wen', 'ShangHai', 300],
['Thu', 'ChengDu', 800],
['Fri', 'NaiJing', 300],
]
};
const dom = document.querySelector('#heatmap-chart');
dom.type = 'heatmap';
dom.chartDataset = dataset;
const valArr = dataset.source.slice(1).map(arr=>arr[2]);
const max = Math.max.apply(null, valArr);
dom.visualMap= {
min: 0,
max: max,
calculable: true,
orient: 'horizontal',
left: 'center',
bottom: '2%'
};
</script>
<style>
#heatmap-chart{
width: 100%;
height: 400px;
}
</style>Radar Chart
<nw-chart id="radar-chart"></nw-chart>
<script>
const dataset = {
source:[
['name','Sales', 'Administration', 'Information Technology', 'Customer Support', 'Development', 'Marketing'],
['Allocated Budget',4200,3000,20000, 35000, 50000, 18000],
['Actual Spending',5000,1400, 28000, 26000, 42000, 21000],
]
};
const dom = document.querySelector('#radar-chart');
dom.type = 'radar';
dom.chartDataset = dataset;
dom.labelFormat = 'bignumber'
</script>
<style>
#radar-chart{
width: 100%;
height: 400px;
}
</style>Sankey Chart
<nw-chart id="sankey-chart"></nw-chart>
<script>
const dataset = {
source: [
['summary', 'appcat', 'app_group', 'bandwidth'],
['External', 'unscanned', 'HTTPS', '13348980042'],
['External', 'Video%2FAudio', 'YouTube', '8876117511'],
['External', 'unscanned', 'DNS', '2194491065'],
['External', 'unscanned', 'HTTP', '1800715704'],
['External', 'unscanned', 'RSH', '674078138'],
['External', 'Web.Client', 'HTTP.BROWSER', '476648745'],
['External', 'General.Interest', 'Google.Services', '230378445'],
['External', 'General.Interest', 'Google.Maps', '190646528'],
['External', 'unscanned', 'SYSLOG', '170477268'],
['External', 'General.Interest', 'Google.Accounts', '139881690'],
['External', 'Web.Client', 'HTTPS.BROWSER', '132308701'],
['External', 'Video%2FAudio', 'Vimeo', '128472913'],
['External', 'unscanned', 'FTP', '124228574'],
['External', 'General.Interest', 'Google.Ads', '70378911'],
['External', 'General.Interest', 'Google.Search', '24753216'],
['External', 'unscanned', 'tcp%2F873', '18698936'],
['External', 'unscanned', 'TELNET', '12393826'],
]
};
const dom = document.querySelector('#sankey-chart');
dom.type = 'sankey';
dom.chartDataset = dataset;
dom.labelFormat = 'bytes'
</script>
<style>
#sankey-chart{
width: 100%;
height: 400px;
}
</style>Complex Examples
Draw a simple chart by just given type and aync loading data
<nw-button id="data-button"> Click to load data</nw-button>
<nw-button id="theme-button"> Click to toggle theme</nw-button>
<div class="type-selector">
<span>Select chart type:</span>
<nw-dropdown id="type-dropdown">
<nw-button slot="trigger" caret><span>line</span></nw-button>
<nw-menu>
<nw-menu-item value="line">line</nw-menu-item>
<nw-menu-item value="bar">bar</nw-menu-item>
<nw-menu-item value="pie">pie</nw-menu-item>
<nw-menu-item value="donut">donut</nw-menu-item>
</nw-menu>
</nw-dropdown>
</div>
<nw-chart id="my-chart"></nw-chart>
<script>
let type = 'line';
let theme = 'dark';
const dataset = {
source: [
['product', '2015', '2016', '2017'],
['Matcha Latte', 43.3, 85.8, 93.7],
['Milk Tea', 83.1, 73.4, 55.1],
['Cheese Cocoa', 86.4, 65.2, 82.5],
['Walnut Brownie', 72.4, 53.9, 39.1]
]
};
const dom = document.querySelector('#my-chart');
const databtn = document.querySelector('#data-button');
const themebtn = document.querySelector('#theme-button');
const typedropdown = document.querySelector('#type-dropdown');
dom.type = type;
dom.theme = theme;
databtn.addEventListener('click', (e) => {console.log(e)
dom.chartDataset = dataset;
});
themebtn.addEventListener('click', (e) => {console.log(e)
theme = theme ==='light' ? 'dark' : 'light';
dom.theme = theme;
});
typedropdown.addEventListener('nwSelect', (e) => {console.log(e)
type = e.detail.item.value;
dom.type = type;
let triggerDom = typedropdown.querySelector('[slot="trigger"]')
triggerDom.innerText = e.detail.item.value
});
</script>
<style>
#my-chart{
width: 100%;
height: 400px;
}
.type-selector {
margin-left: 20px;
display: inline;
}
</style>Events & Action Examples
Below displays how to highlight each sector of pie chart in turn through dispatchAction
<nw-chart id="my-chart2"></nw-chart>
<script>
let type = 'pie';
let theme = 'dark';
let app = {
currentIndex: -1
};
const dataset = {
source: [
['product', '2015', '2016', '2017'],
['Matcha Latte', 43.3, 85.8, 93.7],
['Milk Tea', 83.1, 73.4, 55.1],
['Cheese Cocoa', 86.4, 65.2, 82.5],
['Walnut Brownie', 72.4, 53.9, 39.1]
]
};
const dom = document.querySelector('#my-chart2');
dom.type = type;
dom.theme = theme;
dom.chartDataset = dataset;
setInterval(function () {
var dataLen = dataset.source.length;
dom.dispatchAction({
type: 'downplay',
seriesIndex: 0,
dataIndex: app.currentIndex
});
app.currentIndex = (app.currentIndex + 1) % dataLen;
dom.dispatchAction({
type: 'highlight',
seriesIndex: 0,
dataIndex: app.currentIndex
});
dom.dispatchAction({
type: 'showTip',
seriesIndex: 0,
dataIndex: app.currentIndex
});
}, 1000);
</script>
<style>
#my-chart2{
width: 100%;
height: 400px;
}
.type-selector {
margin-left: 20px;
display: inline;
}
</style>