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I am trying to make a chart which has years along the x-axis and dollar amounts along the y-axis. I finally got close to what I'm looking for, but I found that because the x coordinates are numbers, ChartJS is putting commas in them which looks really strange for years.
After some digging, I used the callbacks. options.plugin.tooltip.callbacks.label worked to let me remove commas in the tooltips, but when I use options.scales.x[0].ticks.callback to try to fix the labels on the bottom, not only does it not work, but I don't see the console.log statement in their ever being printed so it seems it's not even calling the callback. I've tried several variations of how to do the callback based on what I found online and on Stack Overflow which I think correspond to the different ways ChartJS did this in different versions. (I'm on version 3.5.1.)
Then, I realized that... none of the options under options.scales appear to have any effect. I change the min, the title, the tick settings (color to red, callback, etc.) and it has no effect. (This also explains why I was having trouble when using the line chart and had to switch to scatter; apparently type: 'linear' wasn't being picked up nor did it do anything different when I set it to type: 'date' or whatever the exact working was for that.)
Meanwhile, the other options like options.showLine or options.elements do have an effect and I'm seeing the chart and not getting any errors in the console. So, it is picking up the options, just ignoring everything I have in options.scales.
Here is the relevant code:
// Sample data added to make this example self-contained
// This is my internal data format
let data = {
"Series1": [ {x: 2001, y: 100 }, {x: 2002, y: 110 }, {x: 2003, y: 107 }, ],
"Series2": [ {x: 2001, y: 107 }, {x: 2002, y: 102 }, {x: 2004, y: 95 }, ],
}
// Define data //////////////////////////////////////////////////////
// I convert data to format ChartJS wants and add a few options
let datasets = [];
for(let label in data) {
let c = colorIterator.next().value
datasets.push({
label: label,
data: data[label],
backgroundColor: c,
borderColor: c,
});
}
// Define options //////////////////////////////////////////////////////
let chartConfig = {
type: 'scatter',
data: { datasets: datasets, },
options: {
title: { display: false },
indexAxis: 'x', responsive: true, maintainAspectRatio: false,
showLine: true,
elements: {
line: { display: true, tension: 0, borderWidth: 1, fill: false, },
point: { radius: 3 }
},
interaction: { mode: 'x', },
scales: {
x: [{
type: 'linear',
min: 1995, max: (new Date()).getFullYear()+1, stepSize: 1,
title: { display: true, text: 'Year' },
ticks: {
display: true,
major: { enabled: true },
color: 'red',
callback: function(value, index, ticks) {
console.log(value);
return Chart.Ticks.formatters.numeric.apply(this, [value, index, ticks])
.replace(",","");
}
}
}],
y: [{
title: { display: true, text: '$' },
ticks: {
display: true,
color: 'red',
},
}],
},
plugins: {
tooltip: {
callbacks: {
label: function(context) {
let label = context.dataset.label || '';
if(label) {
let x = context.label.replace(",","");
let y = context.formattedValue;
return 'Year ' + x + ' "' + label + '": $' + y;
} else { return 'x'; }
},
},
},
},
}
};
// MAKE CHART //////////////////////////////////////////////////////
let mainChart = new Chart(document.getElementById(c.id), chartConfig);
As described in the docs the scales are not arrays. All the scales are objects in the scale object.
So you will need to change your code to this:
options: {
scales: {
x: {
// x options
},
y: {
// y options
},
}
}
I'm essentially attempting to create a bar chart with 2-8 items where the label on the bottom/legend is the short product code(ex: 4380) and mousing over the bar shows the full SKU/product name.
I have gotten it mostly working but my implementation goes one of two undesirable ways.
The data points all combine into the first product number/chart label.
The blank spots make the bars tiny/not fill up the full width.
My code for rendering the chart is as follows:
var myBarChart2;
$.ajax({
url: "chartdata.php",
data: {
"skugroup": group
},
method: 'GET',
dataType: 'json',
success: function (d) {
Chart.defaults.global.defaultFontFamily = '-apple-system,system-ui,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif';
Chart.defaults.global.defaultFontColor = '#292b2c';
var ctx = document.getElementById("inventorybarchart");
myBarChart2 = new Chart(ctx, {
type: 'bar',
data: {
labels: d.labels,
datasets: d.datasets,
},
options: {
scales: {
xAxes: [{
gridLines: {
display: false
},
ticks: {
display: true
}
}],
yAxes: [{
ticks: {
min: 0,
beginAtZero: true
},
gridLines: {
display: true
}
}],
},
legend: {
display: false
}
}
});
}
});
The ajax response for the two versions is as follows:
Version 1:
{"datasets":[{"labels":"GRAY-DARK-GRAY","backgroundColor":"rgba(164,222,164,1)","borderColor":"rgba(164,222,164,1)","data":[5996]},{"labels":"CANARY-YELLOW","backgroundColor":"rgba(35,148,58,1)","borderColor":"rgba(35,148,58,1)","data":[4605]},{"labels":"PINK-WHITE-GRAY","backgroundColor":"rgba(101,24,125,1)","borderColor":"rgba(101,24,125,1)","data":[1288]},{"labels":"SEAFOAM-WHITE-GRAY","backgroundColor":"rgba(129,74,64,1)","borderColor":"rgba(129,74,64,1)","data":[3463]},{"labels":"YELLOW-WHITE-GRAY","backgroundColor":"rgba(91,216,70,1)","borderColor":"rgba(91,216,70,1)","data":[1537]},{"labels":"WHITE-YELLOW","backgroundColor":"rgba(101,225,237,1)","borderColor":"rgba(101,225,237,1)","data":[152]}],"labels":["4380","4311","4571","4588","4557","4373"]}
Version 2:
{"datasets":[{"label":"GRAY-DARK-GRAY","backgroundColor":"rgba(1,1,235,1)","borderColor":"rgba(1,1,235,1)","data":[5996,null,null,null,null]},{"label":"CANARY-YELLOW","backgroundColor":"rgba(12,87,184,1)","borderColor":"rgba(12,87,184,1)","data":[null,4605,null,null,null]},{"label":"PINK-WHITE-GRAY","backgroundColor":"rgba(85,107,126,1)","borderColor":"rgba(85,107,126,1)","data":[null,null,1288,null,null]},{"label":"SEAFOAM-WHITE-GRAY","backgroundColor":"rgba(181,150,65,1)","borderColor":"rgba(181,150,65,1)","data":[null,null,null,3463,null]},{"label":"YELLOW-WHITE-GRAY","backgroundColor":"rgba(132,66,28,1)","borderColor":"rgba(132,66,28,1)","data":[null,null,null,null,1537]},{"label":"WHITE-YELLOW","backgroundColor":"rgba(49,195,217,1)","borderColor":"rgba(49,195,217,1)","data":[null,null,null,null,null]}],"labels":["4380","4311","4571","4588","4557","4373"]}
The only difference is either I always use the 0 indexes for datasets[index].data or I fill in null depending on where it should be.
Should I be changing the way the chart is rendered or should I change the way the data is passed in?
For the record, the mouseover shows the proper sku/full name.
I would define the data in a single dataset and keep the full product names in a separate property.
const data = {
"labels": ["4380", "4311", "4571", "4588", "4557", "4373"],
"productNames": ["GRAY-DARK-GRAY", "CANARY-YELLOW", "PINK-WHITE-GRAY", "SEAFOAM-WHITE-GRAY", "YELLOW-WHITE-GRAY", "WHITE-YELLOW"],
"datasets": [{
"data": [5996, 4605, 1288, 3463, 1537, 152],
...
}]
};
To get the product names displayed in the tooltip, you would have to define a label callback function as follows:
tooltips: {
callbacks: {
label: (tooltipItem, data) => {
let i = tooltipItem.index;
return data.productNames[i] + ': ' + data.datasets[0].data[i];
}
}
}
Please take a look at your amended code and see how it works.
const data = {
"labels": ["4380", "4311", "4571", "4588", "4557", "4373"],
"productNames": ["GRAY-DARK-GRAY", "CANARY-YELLOW", "PINK-WHITE-GRAY", "SEAFOAM-WHITE-GRAY", "YELLOW-WHITE-GRAY", "WHITE-YELLOW"],
"datasets": [{
"data": [5996, 4605, 1288, 3463, 1537, 152],
"backgroundColor": ["rgba(1,1,235,1)", "rgba(12,87,184,1)", "rgba(85,107,126,1)", "rgba(181,150,65,1)", "rgba(132,66,28,1)", "rgba(49,195,217,1)"],
"borderColor": ["rgba(1,1,235,1)", "rgba(12,87,184,1)", "rgba(85,107,126,1)", "rgba(181,150,65,1)", "rgba(132,66,28,1)", "rgba(49,195,217,1)"]
}]
};
var ctx = document.getElementById("inventorybarchart");
myBarChart2 = new Chart(ctx, {
type: 'bar',
data: data,
options: {
scales: {
xAxes: [{
gridLines: {
display: false
}
}],
yAxes: [{
ticks: {
beginAtZero: true
}
}],
},
legend: {
display: false
},
tooltips: {
callbacks: {
label: (tooltipItem, data) => {
let i = tooltipItem.index;
return data.productNames[i] + ': ' + data.datasets[0].data[i];
}
}
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.0/Chart.min.js"></script>
<canvas id="inventorybarchart" height="90"></canvas>
I have an array of object and this is how I assigned values into it.
$("#gridview").click(function () {
$("table tbody th").each(function () {
var k = $(this).text().trim();
keys.push(k);
});
$("table tbody tr").each(function (i, el) {
var row = {}
$.each(keys, function (k, v) {
row[v] = $("td:eq(" + k + ")", el).text().trim();
});
myData.push(row);
});
myData.shift()
myData.length = 10
console.log(myData);
});
This is how my array of object looks like in inspect element - console
how can I get the values of Region and bind it to the labels below:
new Chart(document.getElementById("chart"), {
type: 'horizontalBar',
data: {
labels: [I want to display all the region here],
datasets: [{
label: "Android",
type: "horizontalBar",
stack: "Base",
backgroundColor: "#eece01",
data: ["I want to display ios user here"],
}, {
label: "ios",
type: "horizontalBar",
stack: "Base",
backgroundColor: "#87d84d",
data: ["I want to display android user here"]
}]
},
options: {
scales: {
xAxes: [{
//stacked: true,
stacked: true,
ticks: {
beginAtZero: true,
maxRotation: 0,
minRotation: 0
}
}],
yAxes: [{
stacked: true,
}]
},
}
});
FYI I have tried myData[Region] but its not working
Guys, I have searched the solutions whole day, seems cant found, please help
You can set the labels using .map() method on myData array like:
data: {
labels: myData.map(d => d.Region),
....
},
EDIT:
You can create a new function and add all chart init code into it like:
function CreateChart() {
new Chart(document.getElementById("chart"), {
type: 'horizontalBar',
data: {
labels: myData.map(d => d.Region),
... you code here
},
...
});
}
CreateChart();
and then on gridview click, again call this CreateChart function in the end like:
$("#gridview").click(function() {
// all your code logic here
console.log(myData);
CreateChart();
});
I've been trying to display somewhat complex data on my webpage and chose chart.js to do so.
Therefor I need to group multiple stacked bars horizontally.
I already found this fiddle for "normal" bars but couldn't quite change it to work with horizontalBar yet.
Stackoverflow question: Chart.js stacked and grouped bar chart
The original Fiddle (http://jsfiddle.net/2xjwoLq0/) has
Chart.defaults.groupableBar = Chart.helpers.clone(Chart.defaults.bar);
And I just replaced the .bar everywhere in the code with .horizontalBar (well knowing that this won't make the cut).
Chart.defaults.groupableBar = Chart.helpers.clone(Chart.defaults.horizontalBar);
Since that didn't quite work, I tried adding the second stacked modifier as suggested for horizontal bars here:
Horizontal stacked bar chart with chart.js and flipped the functions for X and Y calculation (calculateBarY/calculateBarX)
Which quite work either because the stacks won't get merged onto each other correctly.
http://jsfiddle.net/2xjwoLq0/3/
I would appreciate if anyone could help me out on this one.
Looking for something similar, I took a look on example you gave, and decide to write something.
Rather than trying to fix the code or reusing the 'groupableBar', I get Chart.js code from Chart.controllers.horizontalBar and rewrite some part in functions calculateBarY, calculateBarHeight.
Just reused the getBarCount function from your example.
Chart.defaults.groupableHBar = Chart.helpers.clone(Chart.defaults.horizontalBar);
Chart.controllers.groupableHBar = Chart.controllers.horizontalBar.extend({
calculateBarY: function(index, datasetIndex, ruler) {
var me = this;
var meta = me.getMeta();
var yScale = me.getScaleForId(meta.yAxisID);
var barIndex = me.getBarIndex(datasetIndex);
var topTick = yScale.getPixelForValue(null, index, datasetIndex, me.chart.isCombo);
topTick -= me.chart.isCombo ? (ruler.tickHeight / 2) : 0;
var stackIndex = this.getMeta().stackIndex;
if (yScale.options.stacked) {
if(ruler.datasetCount>1) {
var spBar=ruler.categorySpacing/ruler.datasetCount;
var h=me.calculateBarHeight(ruler);
return topTick + (((ruler.categoryHeight - h) / 2)+ruler.categorySpacing-spBar/2)+(h+spBar)*stackIndex;
}
return topTick + (ruler.categoryHeight / 2) + ruler.categorySpacing;
}
return topTick +
(ruler.barHeight / 2) +
ruler.categorySpacing +
(ruler.barHeight * barIndex) +
(ruler.barSpacing / 2) +
(ruler.barSpacing * barIndex);
},
calculateBarHeight: function(ruler) {
var returned=0;
var me = this;
var yScale = me.getScaleForId(me.getMeta().yAxisID);
if (yScale.options.barThickness) {
returned = yScale.options.barThickness;
}
else {
returned= yScale.options.stacked ? ruler.categoryHeight : ruler.barHeight;
}
if(ruler.datasetCount>1) {
returned=returned/ruler.datasetCount;
}
return returned;
},
getBarCount: function () {
var stacks = [];
// put the stack index in the dataset meta
Chart.helpers.each(this.chart.data.datasets, function (dataset, datasetIndex) {
var meta = this.chart.getDatasetMeta(datasetIndex);
if (meta.bar && this.chart.isDatasetVisible(datasetIndex)) {
var stackIndex = stacks.indexOf(dataset.stack);
if (stackIndex === -1) {
stackIndex = stacks.length;
stacks.push(dataset.stack);
}
meta.stackIndex = stackIndex;
}
}, this);
this.getMeta().stacks = stacks;
return stacks.length;
}
});
var data = {
labels: ["January", "February", "March"],
datasets: [
{
label: "Dogs",
backgroundColor: "rgba(255,0,0,0.2)",
data: [20, 10, 25],
stack: 1,
xAxisID: 'x-axis-0',
yAxisID: 'y-axis-0'
},
{
label: "Cats",
backgroundColor: "rgba(255,255,0,0.2)",
data: [70, 85, 65],
stack: 1,
xAxisID: 'x-axis-0',
yAxisID: 'y-axis-0'
},
{
label: "Birds",
backgroundColor: "rgba(0,255,255,0.2)",
data: [10, 5, 10],
stack: 1,
xAxisID: 'x-axis-0',
yAxisID: 'y-axis-0'
},
{
label: ":-)",
backgroundColor: "rgba(0,255,0,0.2)",
data: [20, 10, 30],
stack: 2,
xAxisID: 'x-axis-1',
yAxisID: 'y-axis-0'
},
{
label: ":-|",
backgroundColor: "rgba(0,0,255,0.2)",
data: [40, 50, 20],
stack: 2,
xAxisID: 'x-axis-1',
yAxisID: 'y-axis-0'
},
{
label: ":-(",
backgroundColor: "rgba(0,0,0,0.2)",
data: [60, 20, 20],
stack: 2,
xAxisID: 'x-axis-1',
yAxisID: 'y-axis-0'
},
]
};
var ctx = document.getElementById("myChart").getContext("2d");
new Chart(ctx, {
type: 'groupableHBar',
data: data,
options: {
scales: {
yAxes: [{
stacked: true,
type: 'category',
id: 'y-axis-0'
}],
xAxes: [{
stacked: true,
type: 'linear',
ticks: {
beginAtZero:true
},
gridLines: {
display: false,
drawTicks: true,
},
id: 'x-axis-0'
},
{
stacked: true,
position: 'top',
type: 'linear',
ticks: {
beginAtZero:true
},
id: 'x-axis-1',
gridLines: {
display: true,
drawTicks: true,
},
display: false
}]
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.4.0/Chart.min.js"></script>
<canvas id="myChart"></canvas>
Also put example on jsfiddle here: https://jsfiddle.net/b7gnron7/4/
Code is not strongly tested, you might found some bugs especially if you try to display only one stacked group (use horizontalBar instead in this case).
Your post is a little bit old... not sure that you still need a solution, but it could be useful for others ^_^
I've just started working with Chart.js, and I am getting very frustrated very quickly. I have my stacked bar chart working, but I can't get the click "events" to work.
I have found a comment on GitHub by nnnick from Chart.js stating to use the function getBarsAtEvent, even though this function cannot be found in the Chart.js documentation at all (go ahead, do a search for it). The documentation does mention the getElementsAtEvent function of the chart reference, but that is for Line Charts only.
I set an event listener (the right way) on my canvas element:
canv.addEventListener('click', handleClick, false);
...yet in my handleClick function, chart.getBarsAtEvent is undefined!
Now, in the Chart.js document, there is a statement about a different way to register the click event for the bar chart. It is much different than nnnick's comment on GitHub from 2 years ago.
In the Global Chart Defaults you can set an onClick function for your chart. I added an onClick function to my chart configuration, and it did nothing...
So, how the heck do I get the on-click-callback to work for my bar chart?!
Any help would be greatly appreciated. Thanks!
P.S.: I am not using the master build from GitHub. I tried, but it kept screaming that require is undefined and I was not ready to include CommonJS just so that I could use this chart library. I would rather write my own dang charts. Instead, I downloaded and am using the Standard Build version that I downloaded straight from the link at the top of the documentation page.
EXAMPLE: Here is an example of the configuration I am using:
var chart_config = {
type: 'bar',
data: {
labels: ['One', 'Two', 'Three'],
datasets: [
{
label: 'Dataset 1',
backgroundColor: '#848484',
data: [4, 2, 6]
},
{
label: 'Dataset 2',
backgroundColor: '#848484',
data: [1, 6, 3]
},
{
label: 'Dataset 3',
backgroundColor: '#848484',
data: [7, 5, 2]
}
]
},
options: {
title: {
display: false,
text: 'Stacked Bars'
},
tooltips: {
mode: 'label'
},
responsive: true,
maintainAspectRatio: false,
scales: {
xAxes: [
{
stacked: true
}
],
yAxes: [
{
stacked: true
}
]
},
onClick: handleClick
}
};
I managed to find the answer to my question by looking through the Chart.js source code.
Provided at line 3727 of Chart.js, Standard Build, is the method .getElementAtEvent. This method returns me the "chart element" that was clicked on. There is sufficent data here to determine what data to show in a drill-down view of the dataset clicked on.
On the first index of the array returned by chart.getElementAtEvent is a value _datasetIndex. This value shows the index of the dataset that was clicked on.
The specific bar that was clicked on, I believe, is noted by the value _index. In my example in my question, _index would point to One in chart_config.data.labels.
My handleClick function now looks like this:
function handleClick(evt)
{
var activeElement = chart.getElementAtEvent(evt);
..where chart is the reference of the chart created by chart.js when doing:
chart = new Chart(canv, chart_config);
The specific set of data that was selected by the click can therefore be found as:
chart_config.data.datasets[activeElement[0]._datasetIndex].data[activeElement[0]._index];
And there you have it. I now have a datapoint that I can build a query from to display the data of the bar that was clicked on.
AUGUST 7TH, 2021. UPDATE
There is now a method for what we are looking for. Take a look at here
Hi this is the click event under options which is getting values from x and y-axis
onClick: function(c,i) {
e = i[0];
console.log(e._index)
var x_value = this.data.labels[e._index];
var y_value = this.data.datasets[0].data[e._index];
console.log(x_value);
console.log(y_value);
}
I found this solution at https://github.com/valor-software/ng2-charts/issues/489
public chartClicked(e: any): void {
if (e.active.length > 0) {
const chart = e.active[0]._chart;
const activePoints = chart.getElementAtEvent(e.event);
if ( activePoints.length > 0) {
// get the internal index of slice in pie chart
const clickedElementIndex = activePoints[0]._index;
const label = chart.data.labels[clickedElementIndex];
// get value by index
const value = chart.data.datasets[0].data[clickedElementIndex];
console.log(clickedElementIndex, label, value)
}
}
}
You can use onClick like this.
var worstCells3GBoxChart = new Chart(ctx, {
type: 'bar',
data: {
labels: lbls,
datasets: [{
label: 'Worst Cells by 3G',
data: datas,
backgroundColor: getColorsUptoArray('bg', datas.length),
borderColor: getColorsUptoArray('br', datas.length),
borderWidth: 1
}]
},
options: {
legend: {
display: false
},
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}]
},
onClick: function (e) {
debugger;
var activePointLabel = this.getElementsAtEvent(e)[0]._model.label;
alert(activePointLabel);
}
}
});
Chartjs V3.4.1
This is what worked for me in v3, after looking at solutions for older versions:
const onClick = (event, clickedElements) => {
if (clickedElements.length === 0) return
const { dataIndex, raw } = clickedElements[0].element.$context
const barLabel = event.chart.data.labels[dataIndex]
...
}
raw is the value of the clicked bar.
barLabel is the label of the clicked bar.
You need to pass the onClick to the bar chart config:
const barConfig = {
...
options: {
responsive: true,
onClick,
...
}
}
Well done! This seems to return the data value being charted though, which in many cases might be possible to appear more than once, thus making it unclear what was clicked on.
This will return the actual data label of the bar being clicked on. I found this more useful when drilling down into a category.
chart_config.data.labels[activeElement[0]._index]
I was able to make this work in another way.
Might not be supported, but sometimes, I find that neither the label nor the value is adequate to get me the necessary information to populate a drill-through.
So what I did was add a custom set of attributes to the data:
var ctx = document.getElementById("cnvMyChart").getContext("2d");
if(theChart != null) {theChart.destroy();}
theChart = new Chart(ctx, {
type: typ,
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datakeys: ["thefirstone","thesecondone","thethirdone","thefourthone","thefifthone","thesixthone"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
...etc
Then when I need to push the drillthrough key into another ajax call, I was able to get it with this:
var theDrillThroughKey = theChart.config.data.datakeys[activePoints[0]._index];
So I'm really not sure that it's appropriate to be adding custom elements into the data for the Chart, but it's working so far in Chrome, IE and Firefox. I needed to be able to put more information into the drillthrough than I really wanted displayed.
Example of the full thing: https://wa.rrdsb.com/chartExamples
Thoughts?
I had the same problem with multiple datasets, and used this workaround:
var clickOnChart = function(dataIndex){
...
}
var lastHoveredIndex = null;
var chart_options = {
...
tooltips: {
...
callbacks: {
label: function(tooltipItem, chart) {
var index = tooltipItem.datasetIndex;
var value = chart.datasets[index].data[0];
var label = chart.datasets[index].label;
lastHoveredIndex = index;
return value + "€";
}
}
},
onClick:function(e, items){
if ( items.length == 0 ) return; //Clicked outside any bar.
clickOnChart(lastHoveredIndex);
}
}
Let's say that you declared a chart using a method like so:
window.myBar = new Chart({chart_name}, {
type: xxx,
data: xxx,
events: ["click"],
options: {
...
}
});
A good way of declaring onclick events would involve listening for the canvas click, like so:
({chart_name}.canvas).onclick = function(evt) {
var activePoints = myBar.getElementsAtEvent(evt);
// let's say you wanted to perform different actions based on label selected
if (activePoints[0]._model.label == "label you are looking for") { ... }
}
In the chart options for Chart.js v3.5.1 which is latest
Check below sample code
let enterpriseChartOptions = {
responsive:true,
maintainAspectRatio: false,
onClick: (c,i) => {
console.log('Get the underlying label for click,', c.chart.config._config.data.labels[i[0].index]);
},
plugins: {
title:{
text:'Enterprise Dashboard (Health Status of 10 stores) updated every 30 minutes',
fontSize:20
},
},
scales: {
x: {
display: true,
type: 'category',
position: 'right',
ticks: {
padding: 8,
},
},
y: {
display: true,
ticks: {
callback: function(val, index) {
// Show the label
return val < 1 ? "All good" : (val < 2 && val >=1) ? "Warning": val === 2 ? "Critical" : "";
},
//color: 'red',
stepSize: 1,
padding: 8
}
}
},
layout: {
padding: {
left: 20,
right: 20,
top: 25,
bottom: 0
}
},
};
var employeeDetailsCtx = document.getElementById("employee-details").getContext("2d");
var employee_details_data = {
labels: ["Late Present", "On Leave", "Training", "Tour"],
datasets: [{
label: "Officer",
backgroundColor: "#5A8DEE",
data: [
...
]
}, {
label: "Staff",
backgroundColor: "#4BC0C0",
data: [
...
]
}]
};
var myoption = {
tooltips: {
enabled: true
},
hover: {
animationDuration: 1
},
onClick: function (evt, i) {
var activePoint = employeeDetailsBarChart.getElementAtEvent(evt)[0];
var data = activePoint._chart.data;
var datasetIndex = activePoint._datasetIndex;
var label = data.datasets[datasetIndex].label;
var value = data.datasets[datasetIndex].data[activePoint._index];
e = i[0];
var x_value = this.data.labels[e._index];
console.log(x_value)
console.log(label)
console.log(value)
},
animation: {
duration: 1,
onComplete: function () {
var chartInstance = this.chart,
ctx = chartInstance.ctx;
ctx.textAlign = 'center';
ctx.fillStyle = "rgba(0, 0, 0, 1)";
ctx.textBaseline = 'bottom';
this.data.datasets.forEach(function (dataset, i) {
var meta = chartInstance.controller.getDatasetMeta(i);
meta.data.forEach(function (bar, index) {
var data = dataset.data[index];
ctx.fillText(data, bar._model.x, bar._model.y - 5);
});
});
}
}
};
var employeeDetailsBarChart = new Chart(employeeDetailsCtx, {
type: 'bar',
data: employee_details_data,
options: myoption
});