I use chart js to draw pretty charts for my project. Now I need to draw pie chart inside donut chart like this:
Data in donut chart doesn't depending on data in pie chart that inside. Color also doesn't matter. Does anyone have ideas?
I can only draw pie chart and donut chart separately))
function drawOperatorStatusChart(labels, data, title, colors) {
new Chart(document.getElementById("pie_chart_operator"), {
type: 'pie',
data: {
labels: labels,
datasets: [{
label: data,
backgroundColor: colors,
data: data
}]
},
options: {
tooltips: {
callbacks: {
label: function (tooltipItem, data) {
return secondsToHHMMSS(data['datasets'][0]['data'][tooltipItem['index']]);
}
}
},
title: {
display: true,
text: title
}
}
});
}
function drawReportDetailedDoughnutChart(labels, data, title, colors) {
var ctx = document.getElementById('operator_detailed_doughnut_chart').getContext('2d');
new Chart(ctx, {
type: 'doughnut',
data: {
labels: labels,
datasets: [{
label: "",
backgroundColor: colors,
data: data
}]
},
options: {
responsive: true,
legend: {
position: 'top',
},
title: {
display: true,
text: title
},
animation: {
animateScale: true,
animateRotate: true
}
}
});
}
I would experiment with position absolute.
See a sample of my idea: http://jsfiddle.net/zteak2uq/
<canvas class="absolute" id="standChart"></canvas>
Related
I'm using the library chartJs to display the data that i get from my MySQL database.
In the fucntion below, AddValuesToNavigatorChart takes the browsers data and the percentage data and displays them on the pie chart.
What i need to know, is how to add '%' in my labels ?
I found few answer with getContent('2d').. using the old way, but it's not working.
This is the function :
function AddValuesToNavigatorChart(browsers, percentage) {
checkNavigatorChart()
const data = {
labels: browsers,
datasets: [{
data: percentage,
backgroundColor: [
'rgb(192,192,192)',
'rgb(255,0,0)',
'rgb(0,0,0)',
'rgb(105,105,105)'
],
hoverOffset: 4
}]
};
const config = {
tooltips: {
enabled: false
},
type: 'pie',
data: data,
plugins: [ChartDataLabels],
options: {
showTooltips: false,
plugins: {
datalabels: {
color: 'rgb(255,255,255)',
borderWidth: '2',
align: 'top'
},
legend: {
position: 'bottom',
align: 'center',
labels: {
boxWidth: 12,
padding: 15,
usePointStyle: true,
pointStyle: 'circle'
}
},
title: {
text: 'Navigator Chart',
display: true,
color: 'rgb(0,0,0)',
position: 'top'
}
}
}
};
const NavigatorChart = new Chart(
document.getElementById('NavigatorChart'),
config
);
}
Please provide the version of chartjs that you are using.
Did you mean you want to show the % in the label of the tooltip?
For version v3.8.0, here is a working code I have just made, Link
As in option, you can edit the label of tooltip as you want:
options: {
plugins: {
tooltip: {
callbacks: {
label: (tooltipItem) => {
//tooltipItem is for the slice of the pie you are hovering now
return ' ' + tooltipItem.parsed + '%';
},
}
}
}
}
I am trying to create a bar chart in angular using chart.js and angular.
I want to display the disaters vs area. with the type of disaster ( earthquake, hurricane, storm...etc) on the x-axis and area (as in location) on the y-axis.
However, the area data is string and does not work when trying to plot a bar graph as it requires numbers.
I am reading the data as follows:
ngOnInit(): void {
this.chartService.noOfEqu().subscribe((res) => {
let area = res.map((res) => res.area);
let disaster = res.map((res) => res.disasterNature);
new Chart('disasterCanvas', {
type: 'bar',
data: {
labels: disaster,
datasets: [
{
data: area,
label: 'area',
backgroundColor: '#A121D5',
},
],
},
options: {
plugins: {
legend: {
display: true,
},
},
scales: {
x: {
ticks: {
display: true,
},
},
y: {
ticks: {
display: true,
},
},
},
},
});
});
}
}
Where let area = res.map((res) => res.area); is the area variable.
I want to know what is the best way to structure the data to be entered into the graph.
The disaster data that is logged is:
and the area data :
How can i structure the area such that it counts how much areas that a disaster has occured and plot it on the bar chart?
Thank you in advance...if there is anything i can clarify please let me know in the comments
Also is there another way to display this data besides tallying the string data?
You need to add a labels array to the scale and set the type to category to use string data:
const options = {
type: 'bar',
data: {
labels: ["Earthquake", "Tornade", "Flood"],
datasets: [{
label: '# of Votes',
data: ['Paris', 'Berlin', 'London'],
backgroundColor: 'pink'
}]
},
options: {
scales: {
y: {
type: 'category',
reverse: true,
labels: ['', 'London', 'Paris', 'Berlin']
}
}
}
}
const ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.7.1/chart.js"></script>
</body>
I have chart which show 3 types of label
I want to keep two of them and want to hide one Invoice Income Report. How can I hide that one label? I am using chart.js v2
var myChart = new Chart(ctx, {
type: 'bar',
data: {
labels: labels,
datasets: [{
label: 'Invoice Income Report',
data: bar_chart_data,
backgroundColor: colors,
borderWidth: 1
}, {
label: 'Below Average',
backgroundColor: ['rgba(255, 99, 132, 1)']
}, {
label: 'Above Average',
backgroundColor: ['rgba(11, 156, 49, 1)']
}]
},
options: {
scales: {
y: {
beginAtZero: true
}
},
}
});
You can simply make display false.
const options = {
responsive: true,
plugins: {
legend: {
position: 'top' as const,
display: false,
},
title: {
display: false,
text: 'Chart.js Line Chart',
},
},
};
To hide the labels on version 4.2.1 of chart.js use this:
// Example chart.
const chart = new Chart(id, {
type: 'bar', // Chart type.
data: data, // Your data.
options: {
// Add plugins to options.
plugins: {
legend: {
display: false // This hides all text in the legend and also the labels.
}
}
// add your scales or other options.
}
});
For more info use the doc: https://www.chartjs.org/docs/latest/configuration/legend.html
In chart.js, You can hide the labels using legend attribute. Add the following code in options of chart.js
legend: {
display: false
}
According to your code, after adding legend the options will be .....
options: {
scales: {
y: {
beginAtZero: true
}
},
legend: {
display: false
}
}
Add legend option to options configuration, set display to false:
, options: {
scales: {
y: {
beginAtZero: true
}
},
legend: {
display: false
}
}
docs3:https://www.chartjs.org/docs/latest/configuration/legend.html
docs2:https://www.chartjs.org/docs/2.6.0/configuration/legend.html
My React app uses react-chartjs-2 (which in turn uses the latest Chart.js 2.7.2). I'm trying to create stacked line charts with a differently styled section between the second-to-last and last x-axis labels, as shown in this example:
How can this be accomplished?
I solved it myself by separating the stacked line data into 2 datasets, to plot as separate stacked plots on the same figure/axes (by including the 2 separate datasets in a single chart's data object).
#Izzi (from comment) here is example:
Link with examle: https://www.chartjs.org/docs/latest/samples/area/line-boundaries.html
Paste this config into editor on the website linked above:
data
const data = {
labels: generateLabels(),
datasets: [
{
label: 'Data A',
data: [40.96,89.06,65.46,45.46,89.55,54.52,71.24,89.1],
borderColor: Utils.CHART_COLORS.red,
backgroundColor: Utils.CHART_COLORS.red,
// look at this setting
fill: 'origin'
},
{
label: 'Data B',
data: [20.96,65.06,15.46,34.46,53.55,24.52,31.24,59.1],
borderColor: Utils.CHART_COLORS.blue,
backgroundColor: Utils.CHART_COLORS.blue,
fill: 'origin'
},
{
label: 'Data C',
data: [20.96,65.06,15.46,34.46,53.55,24.52,31.24,59.1],
borderColor: Utils.CHART_COLORS.green,
backgroundColor: Utils.CHART_COLORS.green,
fill: 'origin'
}
]
};
config
const config = {
type: 'line',
data: data,
options: {
scales: {
y: {
// look at this setting
stacked: true,
}
},
plugins: {
filler: {
propagate: false,
},
title: {
display: true,
text: (ctx) => 'Fill: ' + ctx.chart.data.datasets[0].fill
}
},
interaction: {
intersect: false,
}
},
};
I have configured a chart to use connectNulls.
What I am expecting is that the chart will draw lines to and from the edges of the chart:
(x=0 and x=n)
How do I get the chart to draw lines from the left edge (for the missing data points) to the right edge.
var chart = new Highcharts.StockChart({
chart: {
renderTo: 'container'
},
title: {
text: 'Connect Nulls'
},
plotOptions: {
series: {
connectNulls: true,
}
},
series: [
{
type: 'line',
name: data()[0][0],
data: data()[0][1]
},
}
http://jsfiddle.net/0qzrbnks/
edit
I have added a null value to series D0806, and it's still not connecting it?