I'm trying to draw a line chart with chartjs, but i can't get it working - keep getting 't is undefined' error.
here is my fiddle example: http://jsfiddle.net/6bjy9nxh/344/
can anyone figure out what im doing wrong here?
chartjs: http://www.chartjs.org/docs/#line-chart-example-usage
cdn: https://cdnjs.cloudflare.com/ajax/libs/Chart.js/1.0.2/Chart.min.js
html
<canvas id="myChart" width="500" height="350"></canvas>
javascript
var ctx = document.getElementById("myChart");
var data = {
labels: ["January", "February", "March", "April", "May", "June", "July"],
datasets: [
{
label: "My First dataset",
fill: false,
lineTension: 0.1,
backgroundColor: "rgba(75,192,192,0.4)",
borderColor: "rgba(75,192,192,1)",
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
pointBorderColor: "rgba(75,192,192,1)",
pointBackgroundColor: "#fff",
pointBorderWidth: 1,
pointHoverRadius: 5,
pointHoverBackgroundColor: "rgba(75,192,192,1)",
pointHoverBorderColor: "rgba(220,220,220,1)",
pointHoverBorderWidth: 2,
pointRadius: 1,
pointHitRadius: 10,
data: [65, 59, 80, 81, 56, 55, 40],
}
]
};
var myLineChart = new Chart(ctx, {
type: 'line',
data: data,
});
You are including version 1, you need version 2 for Chart.js
https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.3/Chart.min.js
http://jsfiddle.net/x55sgzgf/
Related
I am currently trying to do a chart with chart.js, and I would like to get the total number of sales over a year in 1 month increments. I'm currently wondering how to break down the number of sales I make every month knowing that I have the "created_at" column for each order. I know how to do the total for each month with a foreach loop, but to cut out the sales and put the total in a table, I don't see how I could do it.
This is what my table looks like:
This is what my chart looks like:
moment().locale('fr');
var canvas = document.getElementById("bellegaiaChart");
var ctx = canvas.getContext('2d');
// Global Options:
Chart.defaults.global.defaultFontColor = 'black';
Chart.defaults.global.defaultFontSize = 16;
var data = {
labels: ["Jan", "Fev", "Mar", "Avr", "Mai", "Juin", "Jui", "AoĆ»", "Sep", "Oct", "Nov", "Dec"],
datasets: [{
label: "Ventes",
fill: false,
lineTension: 0.1,
backgroundColor: "rgba(225,0,0,0.4)",
borderColor: "red", // The main line color
borderCapStyle: 'square',
borderDash: [], // try [5, 15] for instance
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
pointBorderColor: "black",
pointBackgroundColor: "white",
pointBorderWidth: 1,
pointHoverRadius: 8,
pointHoverBackgroundColor: "yellow",
pointHoverBorderColor: "brown",
pointHoverBorderWidth: 2,
pointRadius: 4,
pointHitRadius: 10,
// notice the gap in the data and the spanGaps: true
data: [65, 59, 80, 81, 56, 110, 40 ,60,55,30,78],
spanGaps: false,
}, {
label: "Nouveaux Clients",
fill: false,
lineTension: 0.1,
backgroundColor: "rgba(167,105,0,0.4)",
borderColor: "rgb(167, 105, 0)",
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
pointBorderColor: "white",
pointBackgroundColor: "black",
pointBorderWidth: 1,
pointHoverRadius: 8,
pointHoverBackgroundColor: "brown",
pointHoverBorderColor: "yellow",
pointHoverBorderWidth: 2,
pointRadius: 4,
pointHitRadius: 10,
// notice the gap in the data and the spanGaps: false
data: [10, 20, 60, 95, 64, 78, 90,70,40,70,89, 73],
spanGaps: false,
}
]
};
// Notice the scaleLabel at the same level as Ticks
var options = {
scales: {
yAxes: [{
ticks: {
beginAtZero:true
},
scaleLabel: {
display: true,
labelString: 'Moola',
fontSize: 20
}
}]
}
};
// Chart declaration:
var myBarChart = new Chart(ctx, {
type: 'line',
data: data,
options: options
});
This chart is currently integrated in my blade view.
The goal would be to have a table containing all the sales totals per month (so 12 entries in the table) in order to be able to specify it in the data of my chart.
I am making charts from chart.js. At first I can see the animation in my line graph and pie chart but now the line graph doesn't show it's animation but my pie chart works fine.
line graph/chart:
<div class="middle">
<div class="lineGraph">
<canvas id="lineChart"></canvas>
<script>
const CHART = document.getElementById("lineChart");
console.log(CHART);
let lineChart = new Chart(CHART, {
type: 'line',
data: {
labels: ["January", "Feburary", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
datasets: [
{
label: "Sales Trend",
fill: false,
lineTension: 0.1,
backgroundColor: "rgba(75, 192, 192, 0.4)",
borderColor: "rgba(75, 192, 192, 1)",
borderCapStyle: 'butt',
borderDash: [],
borderDashOffSet: 0.0,
borderJoinStyle: 'miter',
pointBorderColor: "rgba(75, 192, 192, 1)",
pointBackgroundColor: "#fff",
pointBorderWidth: 1,
pointHoverRaduis: 5,
pointHoverBackgroundColor: "rgba(75, 192, 192,1)",
pointHoverBorderColor: "rgba(220,220,220,1)",
pointHoverBorderWidth: 2,
pointRaduis: 1,
pointHitRaduis: 10,
data: [65, 59, 80, 81, 56, 55, 40, 36, 77, 21, 44, 60]
}
]
},
options:{
scales:{
yAxes:[{
ticks:{
beginAtZero: true
}
}]
},
animation:{
duration: 4000,
easing: "linear"
}
}
});
</script>
</div>
<div class="pieGraph">
<canvas id="pieChart"></canvas>
<script>
const chrt = document.getElementById("pieChart");
Chart.defaults.scale.ticks.beginAtZero = true;
console.log(chrt);
let pieChart = new Chart(chrt,{
type: 'pie',
data: {
labels: ['Male', 'Female'],
datasets: [
{
label: 'Points',
backgroundColor:['#2980b9', '#ff4d4d'],
data: [70, 30]
}
]
},
options:{
animation: {
animateScale: true
}
}
});
</script>
</div>
At first it didn't have the animation options but still I can the animation. So, I thought it was default. But apparently it doesn't show its animation anymore that is why I added the animation option but there is still no animation being seen.
I try do to a Multi - Linechart with chart.js. I have a json dataset from a database. The number of dataset can be different. Here is a example (x can be more) with JSON Data.
[{"name":"name1","jan":4067.5,"feb":1647,
"mrz":1375,"apr":10191,"mai":0,"jun":28679,"jul":59502},
{"name":"name2","jan":47548,"feb":63280.5,
"mrz":51640.26,"apr":75029,"mai":41137,"jun":89114.26,"jul":77332},
{"name":"name3","jan":38099,"feb":55023.5,
"mrz":62668,"apr":39482,"mai":44193.3,"jun":52826.5,"jul":77072},
{"name":"namex","jan":34930.5,"feb":36831.5,
"mrz":24391,"apr":35051,"mai":38038,"jun":12700,"jul":51080}]
I have abbreviated the example, in reality it is until December.
I try to do a chart with a line for every name. The X-axis should be the months of January to December and the Y-axis sales.
34/5000
From what I understand, your dataset will get dynamically updated.
You can just change your dataset then call the update() function.
For example:
First initialize your chart with all the data using:
var canvas = document.getElementById("barChart");
var ctx = canvas.getContext('2d');
var data = {
labels: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
datasets: [{
label: "name 1",
fill: false,
lineTension: 0.1,
backgroundColor: "rgba(225,0,0,0.4)",
borderColor: "red",
borderCapStyle: 'square',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
pointBorderColor: "black",
pointBackgroundColor: "white",
pointBorderWidth: 1,
pointHoverRadius: 8,
pointHoverBackgroundColor: "yellow",
pointHoverBorderColor: "brown",
pointHoverBorderWidth: 2,
pointRadius: 4,
pointHitRadius: 10,
data: [65, 59, 80, 81, 56, 55, 40, ,60,55,30,78]
}, {
label: "name 2",
fill: true,
lineTension: 0.1,
backgroundColor: "rgba(167,105,0,0.4)",
borderColor: "rgb(167, 105, 0)",
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
pointBorderColor: "white",
pointBackgroundColor: "black",
pointBorderWidth: 1,
pointHoverRadius: 8,
pointHoverBackgroundColor: "brown",
pointHoverBorderColor: "yellow",
pointHoverBorderWidth: 2,
pointRadius: 4,
pointHitRadius: 10,
data: [10, 20, 60, 95, 64, 78, 90,,70,40,70,89]
}
]
};
var options = {
scales: {
yAxes: [{
ticks: {
beginAtZero:true
},
scaleLabel: {
display: true,
labelString: 'Moola',
fontSize: 20
}
}]
}
};
// Chart declaration:
var myBarChart = new Chart(ctx, {
type: 'line',
data: data,
options: options
});
Then if you later want to update your data, you can just:
myBarChart.data.datasets = [{
label: "name 3",
fill: true,
lineTension: 0.1,
backgroundColor: "rgba(167,105,0,0.4)",
borderColor: "rgb(167, 105, 0)",
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
pointBorderColor: "white",
pointBackgroundColor: "black",
pointBorderWidth: 1,
pointHoverRadius: 8,
pointHoverBackgroundColor: "brown",
pointHoverBorderColor: "yellow",
pointHoverBorderWidth: 2,
pointRadius: 4,
pointHitRadius: 10,
data: [10, 20, 60, 95, 64, 78, 90,,70,40,70,89]
},
...............
];
myBarChart.update();
Also, you will need to format your data in a way that can be used with the charts.
Format your data so that you can create a proper dataset.
I want to display a chart with Chartjs which displays real time data and slowly scrolls along the x axis, I have tried it here with js fiddle and it just jumps like crazy up and down: https://jsfiddle.net/rsnufpq7/
The graph should just move to the left side with the old points out of view without this animation like in the second example here: https://bost.ocks.org/mike/path/
var canvas = document.getElementById('myChart');
var data = {
labels: ["January", "February", "March", "April", "May", "June", "July"],
datasets: [
{
label: "My First dataset",
fill: false,
lineTension: 0.0,
backgroundColor: "rgba(75,192,192,0.4)",
borderColor: "rgba(75,192,192,1)",
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
pointBorderColor: "rgba(75,192,192,1)",
pointBackgroundColor: "#fff",
pointBorderWidth: 1,
pointHoverRadius: 5,
pointHoverBackgroundColor: "rgba(75,192,192,1)",
pointHoverBorderColor: "rgba(220,220,220,1)",
pointHoverBorderWidth: 2,
pointRadius: 5,
pointHitRadius: 10,
data: [65, 59, 80, 0, 56, 55, 40],
}
]
};
var zero = 7;
function adddata(){
var value = Math.floor((Math.random() * 10) + 1);;
myLineChart.data.labels.push(zero);
myLineChart.data.labels.splice(0, 1);
myLineChart.data.datasets[0].data.splice(0, 1);
myLineChart.data.datasets[0].data.push(value);
myLineChart.update();
zero++;
}
setInterval(function(){
adddata();
},1000);
var option = {
showLines: true
};
var myLineChart = Chart.Line(canvas,{
data:data,
options:option
});
Your code works as expected, only thing that you are missing is your y axis does not have range defined and it is being dynamically adjusted.
In order to achieve this I have extended your options to look like this.
var option = {
showLines: true,
scales: {
yAxes: [{
display: true,
ticks: {
beginAtZero:true,
min: 0,
max: 100
}
}]
}
};
I have defined min and max value for y axis and it is not jumping anymore.
Here is a working fiddle
I have two javascript files baseChart.js and chart.min.js. I don't want to include my chart.min.js into index.html file. I just want to include baseChart.js in my index.html.
`var s = document.createElement("script");
s.setAttribute("src","js/Chart.min.js");
document.head.appendChild(s);
class BaseChart{
constructor(area, settings) {
this.area = area;
this.settings = settings;
}
a() {
new Chart(this.area, this.settings);
console.log("BaseChart");
}
}
class BarChart extends BaseChart {
constructor(area, settings) {
super(area, settings);
}
/* constructor(ctx) {
var data = {
labels: ["January", "February", "March", "April", "May", "June", "July"],
datasets: [
{
label: "My First dataset",
fill: false,
lineTension: 0.1,
backgroundColor: "rgba(75,192,192,0.4)",
borderColor: "rgba(75,192,192,1)",
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
pointBorderColor: "rgba(75,192,192,1)",
pointBackgroundColor: "#fff",
pointBorderWidth: 1,
pointHoverRadius: 5,
pointHoverBackgroundColor: "rgba(75,192,192,1)",
pointHoverBorderColor: "rgba(220,220,220,1)",
pointHoverBorderWidth: 2,
pointRadius: 1,
pointHitRadius: 10,
data: [65, 59, 80, 81, 56, 55, 40],
spanGaps: false,
},
{
label: "Second",
data: [12, 56, 45, 23, 78, 23, 90],
}
]
};
var lineChart = new Chart(ctx, {
type: 'line',
data: data
});
} */
b() {
super.a();
}
}`
Currently, this is the baseChart.js file and when I am trying to run this code, I am getting error "Chart is not defined because I used 'new Chart(this.area, this.settings);' and chart.min.js is not initialized before I call this method.". I want to initialize chart.min.js before this classes and method are initialized. I used chart.js library. So, what should I do?
I suggest you install chart.js via npm
npm install chart.js --save
and then import it like that:
// ES6
import Chart from 'chart.js';
I'm assuming that you're using some kind of bundler like webpack to make code above works. If not you have to include chart.min.js in your index file before baseChart.js