const myLineChart = new Chart(viewsCount, {
type: 'line',
data: lineChartStats.data,
options: {
elements: {
line: {
tension: 0 // disables bezier curves
},
point: {
pointStyle: 'line'
}
},
legend: {
display: true,
position: "top",
align: "start",
labels: {
boxHeight: 3
usePointStyle : true,
}
}
}
Chartjs - Changing legend as a line with pointsyle of circle? What can I do to style the legend I'm using latest cdn of chartjs
Please read the migration guide to chart.js version 3, it has some.breaking changes for example legend config has been moved to the plugins section so you will have to do options: { plugins: { legend: {} } }
After that it should work, otherwise they have an example online where you can look at to see what's different https://www.chartjs.org/docs/latest/samples/legend/point-style.html
Related
In my implementation of Chart.js (v3.9.1) I have a line graph with tooltips. The tooltip plugin definition is as follows ( ... added for brevity in code):
this.graph = new Chart(document.querySelector('#m-graph'), {
type: 'line',
data: {...},
options: {
responsive: true,
maintainAspectRatio: false,
interaction: {
mode: 'point'
},
stacked: false,
showTooltips: true,
title: {
display: false
},
scales: scales,
plugins: {
legend: {...},
tooltip: {
position: 'nearest',
callbacks: {
label: (context) => {
...
}
}
}
}
}
});
When I hover over data points, the more "to the right" I go on the X axis, the further away from each data point I need to hover to get the tooltip to popup. GIF below shows issue.
Any ideas/advice on what settings to toggle to fix this? Or is this a bug?
Thank you to #Konrad Linkowski above for pushing me into the right direction. I had the canvas element for the graph sized with width: calc(100% - 5rem). Removing that fixes the issue.
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 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
I'm using charts in my react app. I tried using the Scales and gridlines: false option but it is not working from me.
the image shows my code.
Thank you.
You might check a chart.js sample. From there I found some deviations in the object setup of your example
var config = {
type: 'line',
data: {
datasets: [{
// Here starts your snippet
}]
},
options: {
// The options are outside of the datasets property
scales: {
x: {
gridLines: {
display: false
}
},
y: {
gridLines: {
display: false
}
}
}
}
};
Edit 1: updated the scales with the gridLines property
You can use below code to remove gridlines and if you want to enable X and Y axis its useful
gridLines: {
display: true,
zeroLineColor:'white',
color:'transparent'
}
Edit: The answer below was answered partially, but it helped me get to the final solution. The Fiddle has been updated with what I wanted.
Here's a radar chart I'm working on: https://jsfiddle.net/bigtrouble77/02p81jhr/4/
Chart.defaults.global.defaultFontColor = "#eee";
var radarData = {
labels: [ "Passing", "Positioning", "Stickhandling", "Wristship",
"Determination", "Acceleration", "Speed" ],
datasets: [
{
label: false,
data: [4, 6, 2, 3, 7, 9, 8],
backgroundColor: "rgba(220,220,220,0.2)",
borderColor: "#eee",
borderWidth: 1
}
]
};
var radarOptions = {
responsive: true,
maintainAspectRatio: true,
title: {
display: false
},
legend: {
display: false,
}
};
var ctx5 = document.getElementById("radarChart").getContext("2d");
new Chart(ctx5, { type: 'radar', data: radarData, options: radarOptions });
I have had a very difficult time finding any info on how to configure this chart to do the following:
increase the font size of the text
change the color of the "web" lines
remove the unsightly vertical boxes
change the scale to 1-20, so that 20 is always the highest level in the chart, not the highest number in the data set.
I've not been able to find any info in the docs on how to do any of this. I've had some success using older versions of Chart.js, but the api seems to have changed significantly so none of that works with the latest version of Chart.js. Any help would be greatly appreciated.
Simply replace with :
var radarOptions = {
scale:{
pointLabels: {
fontSize: 20
},
},
responsive: true,
maintainAspectRatio: true,
title: {
display: false
},
legend: {
display: false,
}
};