* label을 image로 넣을 때,
* html 파일 *
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<head>
<style>
#canvas-holder {
border : 1px solid lightgray;
width : 80%;
text-align : center;
margin-left : 10%;
}
#canvas-holder > div {
text-align : center;
margin-top : 10px;
}
#canvas-holder > div > button {
margin-right : 10px;
margin-left : 10px;
min-width: 100px;
}
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.bundle.min.js"></script>
<script type="text/javascript" src="chart.js" ></script>
</head>
<body>
<div id="canvas-holder">
<div>
<button onclick="updateConfigByMutating('change1');">change1</button>
<button onclick="updateConfigByMutating('change2');">change2</button>
</div>
<canvas id="canvas" height="100" ></canvas>
</div>
</body>
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cs |
* chart.js(bar / line multiple) *
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window.chartColors = {
red: 'rgb(255, 99, 132)',
orange: 'rgb(255, 159, 64)',
yellow: 'rgb(255, 205, 86)',
green: 'rgb(75, 192, 192)',
blue: 'rgb(54, 162, 235)',
purple: 'rgb(153, 102, 255)',
grey: 'rgb(201, 203, 207)'
};
(function(global) {
console.log("global", global);
var Samples = global.Samples || (global.Samples = {});
var Color = global.Color;
Samples.utils = {
// Adapted from http://indiegamr.com/generate-repeatable-random-numbers-in-js/
srand: function(seed) {
this._seed = seed;
},
rand: function(min, max) {
var seed = this._seed;
min = min === undefined ? 0 : min;
max = max === undefined ? 1 : max;
this._seed = (seed * 9301 + 49297) % 233280;
return min + (this._seed / 233280) * (max - min);
},
numbers: function(config) {
var cfg = config || {};
var min = cfg.min || 0;
var max = cfg.max || 1;
var from = cfg.from || [];
var count = cfg.count || 8;
var decimals = cfg.decimals || 8;
var continuity = cfg.continuity || 1;
var dfactor = Math.pow(10, decimals) || 0;
var data = [];
var i, value;
for (i = 0; i < count; ++i) {
value = (from[i] || 0) + this.rand(min, max);
if (this.rand() <= continuity) {
data.push(Math.round(dfactor * value) / dfactor);
} else {
data.push(null);
}
}
return data;
},
labels: function(config) {
var cfg = config || {};
var min = cfg.min || 0;
var max = cfg.max || 100;
var count = cfg.count || 8;
var step = (max - min) / count;
var decimals = cfg.decimals || 8;
var dfactor = Math.pow(10, decimals) || 0;
var prefix = cfg.prefix || '';
var values = [];
var i;
for (i = min; i < max; i += step) {
values.push(prefix + Math.round(dfactor * i) / dfactor);
}
return values;
},
months: function(config) {
var cfg = config || {};
var count = cfg.count || 12;
var section = cfg.section;
var values = [];
var i, value;
for (i = 0; i < count; ++i) {
value = MONTHS[Math.ceil(i) % 12];
values.push(value.substring(0, section));
}
return values;
},
transparentize: function(color, opacity) {
var alpha = opacity === undefined ? 0.5 : 1 - opacity;
return Color(color).alpha(alpha).rgbString();
}
};
// DEPRECATED
window.randomScalingFactor = function() {
return Math.round(Samples.utils.rand(0, 100));
};
// INITIALIZATION
Samples.utils.srand(Date.now());
}(this));
//--ChartUtil
function updateConfigByMutating(text) {
console.log("chart", text);
myBar.options.title.text = text;
myBar.update();
}
function color(index) {
return COLORS[index % COLORS.length];
}
$(function(){
var color = Chart.helpers.color;
var barChartData = {
labels: ["Jan", 'February', 'March', 'April', 'May'],
datasets: [{
label: '1', //
backgroundColor: color(window.chartColors.red).alpha(0.5).rgbString(),
borderColor: window.chartColors.red,
borderWidth: 1,
data: [
20,
20,
20,
20,
20
]
}, {
label: '2', //
backgroundColor: color(window.chartColors.yellow).alpha(0.5).rgbString(),
borderColor: window.chartColors.yellow,
borderWidth: 1,
data: [
3,
3,
3,
3,
3
]
}, {
label: '3', //3
backgroundColor: color(window.chartColors.green).alpha(0.5).rgbString(),
borderColor: window.chartColors.green,
borderWidth: 1,
data: [
10,
10,
10,
10,
10
]
}, {
type: 'line',
fill: false,
label: '4', //
backgroundColor: color(window.chartColors.blue).alpha(0.5).rgbString(),
borderColor: window.chartColors.blue,
borderWidth: 1,
data: [
randomScalingFactor(),
randomScalingFactor(),
randomScalingFactor(),
randomScalingFactor(),
randomScalingFactor()
]
}, {
type: 'line',
fill: false,
label: '5', //
backgroundColor: color(window.chartColors.purple).alpha(0.5).rgbString(),
borderColor: window.chartColors.purple,
borderWidth: 1,
data: [
randomScalingFactor(),
randomScalingFactor(),
randomScalingFactor(),
randomScalingFactor(),
randomScalingFactor()
]
}],
}
window.onload = function() {
var images = ['1.jpg', '2.jpg', '3.jpg', '4.jpg', '5.jpg'];
var ctx = document.getElementById('canvas').getContext('2d');
window.myBar = new Chart(ctx, {
type: "bar",
plugins: [{
afterDraw: chart => {
var ctx = chart.chart.ctx;
var xAxis = chart.scales['x-axis-0'];
var yAxis = chart.scales['y-axis-0'];
xAxis.ticks.forEach((value, index) => {
var x = xAxis.getPixelForTick(index);
var image = new Image();
image.src = images[index],
ctx.drawImage(image, x - 45, yAxis.bottom + 10, 90, 50); //(image, 가로위치, 세로위치, 가로사이즈, 세로사이즈)
});
}
}],
data: barChartData,
options: {
responsive: true,
title: {
display: true,
text: 'Chart.js Bar Chart - Multi Axis'
},
tooltips: {
mode: 'index',
intersect: false,
},
layout: {
padding: {
bottom: 60 //ghart grid 하단 부분 padding 값
}
},
scales: {
yAxes: [{
ticks: {
beginAtZero: true
},
}],
xAxes: [{
ticks: {
display: false
},
}],
}
}
});
};
});
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cs |
** Output **
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