I'm working with Chart.js 3.8.0.
I'm trying to create custom tooltip text.
new Chart($('#truck-dwell'), {
type: 'scatter',
data: {
datasets: [{
label: 'Dwell Time (Minutes)',
data: response,
backgroundColor: Colors.Red,
}],
},
options: {
scales: {
x: {
type: 'linear',
position: 'bottom'
}
},
plugins: {
tooltips: {
callbacks: {
label: function(ctx) {
return 'Hello, World!';
}
}
}
}
}
});
Although I've found several sources say this is the newer, version 3 syntax, a breakpoint on my label function shows it is never called.
What am I missing?
Your tooltips: property name is mislabelled it should be tooltip:.
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 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'm using Chart.js v2.7.2 and want to remove the "label" field. Leaving it off returns "undefined" and the various options I've tried have done nothing. Anyone have new insight on this? Legend, title, etc all fail to remove it.
let thisChart = new Chart(gov_chart, {
type: 'horizontalBar',
data: {
label: 'I want to remove this',
labels: [data1, data2],
datasets: [{
backgroundColor: ['rgb(240,61,74)', 'rgb(0, 156, 255)'],
data: [data1.count, data2.count],
}]
},
options: {
scales: {
xAxes: [{
ticks: {
beginAtZero: true
}
}]
}
},
legend: {
display: false
},
title: {
display: false
},
tooltips: {
callbacks: {
label: function(tooltipItem) {
return tooltipItem.yLabel;
}
}
}
});
Note, the accepted answer is outdated for 3.x. To remove the legend you now have to specify the plugin. https://www.chartjs.org/docs/latest/configuration/legend.html
eg
var chart = new Chart(ctx, {
type: 'bar',
data: data,
options: {
plugins: {
legend: {
display: false
}
}
}
});
The label should be inside datasets such as
type: 'horizontalBar',
data: {
labels: [data1, data2],
datasets: [{
label: 'put it here', // => here
backgroundColor: ['rgb(240,61,74)', 'rgb(0, 156, 255)'],
data: [data1.count, data2.count],
}]
},
so you won't get undefined
Updated:
if you don't want to see it, put legend configuration inside the options. Apparently, I saw that your legend is outside options object.
options: {
legend: {
display: false
}
}
You can use filter to remove out the label you don't want to show
options: {
plugins: {
legend: {
labels: {
filter: (l) => (l.text !== 'Label you want to remove')
}
}
}
}
Update for V4:
If you want to remove x completely with labels, just add this to options:
options: {
scales: {
x: {
display: false
}
}
}
I am using the devextreme chart(js charts) with modularity concept.
In one of my bar charts i wish to display a tooltip which on hover displays the name of the SeriesBar with also the value it has.
i.e.
Let us assume my chart has 3 bars which depict the population of USA,UK,France.
While i hover over the USA(Bar) i would like my tooltip to show
USA:10000
Similarly for UK and France
$("#myChartDiv").dxChart({
dataSource: dataset,
commonSeriesSettings: {
argumentField: 'DimensionValue',
valueField: 'MetricValue',
label: {
visible: true,
format: {
type: "fixedPoint",
precision: Barnumberprecision
}
},
type: 'bar',
},
seriesTemplate: {
nameField: "SurveyYear",
},
valueAxis: {
title: {
text: Title
},
position: "left"
},
argumentAxis: {
label: {
overlappingBehavior: { mode: Barlabeloverlappingmode, rotationAngle: Barlabelrotateangle }
}
},
tooltip: {
enabled: true,
location: "edge",
customizeText: function () {
return this.seriesName;
},
format: {
//type: "fixedPoint",
precision: Barnumberprecision
}
},
legend: {
verticalAlignment: BarlegendverticalAlignment,
horizontalAlignment: BarlegendhorizontalAlignment
}
});
I have gone through the devextreme website but found no property which worled for me or may be i did not use it correctly.
can some one tell me which property satisfies my requirement?
I suggest you to go through tooltip documentation, there you will find the properties name which can be used to display particular value.
Refer this DX thread: dxChart - How to customize a tooltip
tooltip: {
enabled: true,
customizeTooltip: function (point) {
return {
text: point.value+' of '+point.argument+' against '+point.seriesName
}
}
}