Amcharts: change entire dataset - javascript

I am starting using amcharts 4 and I have run into issue: according to the docs to change charts dataset all it takes is to assign new array of objects to the chart.data:
chart.data = [{ some data object }, {}......]
It does it seems to be working for me, please see this codepen: https://codepen.io/anon/pen/LMgEjV
/**
* ---------------------------------------
* This demo was created using amCharts 4.
*
* For more information visit:
* https://www.amcharts.com/
*
* Documentation is available at:
* https://www.amcharts.com/docs/v4/
* ---------------------------------------
*/
// Create chart instance
var chart = am4core.create("chartdiv", am4charts.PieChart);
// Add data
chart.data = [{
"country": "Lithuania",
"litres": 501.9
}, {
"country": "Czech Republic",
"litres": 301.9
}, {
"country": "Ireland",
"litres": 201.1
}, {
"country": "Germany",
"litres": 165.8
}, {
"country": "Australia",
"litres": 139.9
}, {
"country": "Austria",
"litres": 128.3
}, {
"country": "UK",
"litres": 99
}, {
"country": "Belgium",
"litres": 60
}, {
"country": "The Netherlands",
"litres": 50
}];
// Add and configure Series
var pieSeries = chart.series.push(new am4charts.PieSeries());
pieSeries.dataFields.value = "litres";
pieSeries.dataFields.category = "country";
function changeData() {
chart.data = [{
"country": "Lithuania",
"litres": 501.9
}, {
"country": "Czech Republic",
"litres": 301.9
}
];
chart.validateData();
}
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
#chartdiv {
width: 100%;
height: 400px;
}
<script src="https://www.amcharts.com/lib/4/core.js"></script>
<script src="https://www.amcharts.com/lib/4/charts.js"></script>
<button id="btn-change" onClick="changeData()">Click Me</button>
<div id="chartdiv"></div>
What am I missing?

I am not 100% sure I understood the problem but I will try to help you anyway, I checked your code and I think the main problem happened because you push entire array to the chart.data instead of just the object you want to change. please see my code:
function changeData() {
chart.data.push({
"country": "Lithuania",
"litres": "501.9"
})
chart.validateData();
}

Related

How to show value at the end of column in amcharts 4

how can I show a value at the end of the column in positive or negative plotted column .
I have tried different solutions but it is not working for negative plotted columns
/**
* ---------------------------------------
* This demo was created using amCharts 4.
*
* For more information visit:
* https://www.amcharts.com/
*
* Documentation is available at:
* https://www.amcharts.com/docs/v4/
* ---------------------------------------
*/
// Themes begin
am4core.useTheme(am4themes_animated);
// Themes end
// Create chart instance
var chart = am4core.create("chartdiv", am4charts.XYChart);
// Add data
chart.data = [{
"country": "USA",
"visits": 2025
}, {
"country": "China",
"visits": -1882
}, {
"country": "Japan",
"visits": 1809
}, {
"country": "Germany",
"visits": 1322
}, {
"country": "UK",
"visits": 1122
}, {
"country": "France",
"visits": 1114
}, {
"country": "India",
"visits": 984
}, {
"country": "Spain",
"visits": -711
}, {
"country": "Netherlands",
"visits": 665
}, {
"country": "Russia",
"visits": 580
}, {
"country": "South Korea",
"visits": 443
}, {
"country": "Canada",
"visits": 441
}, {
"country": "Brazil",
"visits": 395
}];
// Create axes
var categoryAxis = chart.xAxes.push(new am4charts.CategoryAxis());
categoryAxis.dataFields.category = "country";
categoryAxis.renderer.grid.template.location = 0;
categoryAxis.renderer.minGridDistance = 30;
categoryAxis.renderer.labels.template.adapter.add("dy", function(dy, target) {
if (target.dataItem && target.dataItem.index & 2 == 2) {
return dy + 25;
}
return dy;
});
var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
// Create series
var series = chart.series.push(new am4charts.ColumnSeries());
series.dataFields.valueY = "visits";
series.dataFields.categoryX = "country";
series.name = "Visits";
series.columns.template.tooltipText = "{categoryX}: [bold]{valueY}[/]";
series.columns.template.fillOpacity = .8;
var columnTemplate = series.columns.template;
columnTemplate.strokeWidth = 2;
columnTemplate.strokeOpacity = 1;
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
#chartdiv {
width: 100%;
height: 500px;
}
<script src="https://cdn.amcharts.com/lib/4/core.js"></script>
<script src="https://cdn.amcharts.com/lib/4/charts.js"></script>
<script src="https://cdn.amcharts.com/lib/4/themes/animated.js"></script>
<div id="chartdiv"></div>
I need to show the value at the top of the each column , if the bar is plotted in a negative way so there should be the value at the end of the column too.
For example :
It can be done through bullets, specifically creating a new LabelBullet:
var valueLabel = series.bullets.push(new am4charts.LabelBullet());
and setting the text:
valueLabel.label.text = "{valueY}";
Aligning the labels according to data can be done through verticalCenter and dy adapters.
One can play with fontSize and label.truncate properties to fit the labels nicely.
/**
* ---------------------------------------
* This demo was created using amCharts 4.
*
* For more information visit:
* https://www.amcharts.com/
*
* Documentation is available at:
* https://www.amcharts.com/docs/v4/
* ---------------------------------------
*/
// Themes begin
am4core.useTheme(am4themes_animated);
// Themes end
// Create chart instance
var chart = am4core.create("chartdiv", am4charts.XYChart);
// Add data
chart.data = [{
"country": "USA",
"visits": 2025
}, {
"country": "China",
"visits": -1882
}, {
"country": "Japan",
"visits": 1809
}, {
"country": "Germany",
"visits": 1322
}, {
"country": "UK",
"visits": 1122
}, {
"country": "France",
"visits": 1114
}, {
"country": "India",
"visits": 984
}, {
"country": "Spain",
"visits": -711
}, {
"country": "Netherlands",
"visits": 665
}, {
"country": "Russia",
"visits": 580
}, {
"country": "South Korea",
"visits": 443
}, {
"country": "Canada",
"visits": 441
}, {
"country": "Brazil",
"visits": 395
}];
// Create axes
var categoryAxis = chart.xAxes.push(new am4charts.CategoryAxis());
categoryAxis.dataFields.category = "country";
categoryAxis.renderer.grid.template.location = 0;
categoryAxis.renderer.minGridDistance = 30;
categoryAxis.renderer.labels.template.adapter.add("dy", function(dy, target) {
if (target.dataItem && target.dataItem.index & 2 == 2) {
return dy + 25;
}
return dy;
});
var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
// Create series
var series = chart.series.push(new am4charts.ColumnSeries());
series.dataFields.valueY = "visits";
series.dataFields.categoryX = "country";
series.name = "Visits";
series.columns.template.tooltipText = "{categoryX}: [bold]{valueY}[/]";
series.columns.template.fillOpacity = .8;
var columnTemplate = series.columns.template;
columnTemplate.strokeWidth = 2;
columnTemplate.strokeOpacity = 1;
var valueLabel = series.bullets.push(new am4charts.LabelBullet());
valueLabel.label.text = "{valueY}";
valueLabel.label.adapter.add("verticalCenter", (_, l) => l.dataItem && l.dataItem.valueY < 0 ? "top": "bottom");
valueLabel.label.adapter.add("dy", (_, l) => l.dataItem && l.dataItem.valueY < 0 ? 5 :0);
valueLabel.label.hideOversized = false;
valueLabel.label.truncate = true;
chart.maskBullets = false;
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
#chartdiv {
width: 100%;
height: 500px;
}
<script src="https://cdn.amcharts.com/lib/4/core.js"></script>
<script src="https://cdn.amcharts.com/lib/4/charts.js"></script>
<script src="https://cdn.amcharts.com/lib/4/themes/animated.js"></script>
<div id="chartdiv"></div>

How to download Image of amcharts using export functionality from external button

I have a column chart I want to download the chart using amcharts export functionality but the difference is I don't want to use the amcharts icon instead I want to use my own buttons
/**
* ---------------------------------------
* This demo was created using amCharts 4.
*
* For more information visit:
* https://www.amcharts.com/
*
* Documentation is available at:
* https://www.amcharts.com/docs/v4/
* ---------------------------------------
*/
// Themes begin
am4core.useTheme(am4themes_animated);
// Themes end
// Create chart instance
var chart = am4core.create("chartdiv", am4charts.XYChart);
// Add data
chart.data = [{
"country": "USA",
"visits": 2025
}, {
"country": "China",
"visits": 1882
}, {
"country": "Japan",
"visits": 1809
}, {
"country": "Germany",
"visits": 1322
}, {
"country": "UK",
"visits": 1122
}, {
"country": "France",
"visits": 1114
}, {
"country": "India",
"visits": 984
}, {
"country": "Spain",
"visits": 711
}, {
"country": "Netherlands",
"visits": 665
}, {
"country": "Russia",
"visits": 580
}, {
"country": "South Korea",
"visits": 443
}, {
"country": "Canada",
"visits": 441
}, {
"country": "Brazil",
"visits": 395
}];
// Create axes
var categoryAxis = chart.xAxes.push(new am4charts.CategoryAxis());
categoryAxis.dataFields.category = "country";
categoryAxis.renderer.grid.template.location = 0;
categoryAxis.renderer.minGridDistance = 30;
categoryAxis.renderer.labels.template.adapter.add("dy", function(dy, target) {
if (target.dataItem && target.dataItem.index & 2 == 2) {
return dy + 25;
}
return dy;
});
var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
// Create series
var series = chart.series.push(new am4charts.ColumnSeries());
series.dataFields.valueY = "visits";
series.dataFields.categoryX = "country";
series.name = "Visits";
series.columns.template.tooltipText = "{categoryX}: [bold]{valueY}[/]";
series.columns.template.fillOpacity = .8;
var columnTemplate = series.columns.template;
columnTemplate.strokeWidth = 2;
columnTemplate.strokeOpacity = 1;
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
#chartdiv {
width: 100%;
height: 500px;
}
<script src="https://cdn.amcharts.com/lib/4/core.js"></script>
<script src="https://cdn.amcharts.com/lib/4/charts.js"></script>
<script src="https://cdn.amcharts.com/lib/4/themes/animated.js"></script>
<button id = "image"> export image </button>
<button id = "pdf"> export pdf </button>
<div id="chartdiv"></div>
Now I want to use my own button to export chart as image or pdf using default amcharts functionality , is it possible ?
No problem. You can use the export API.
In your example, just add event listeners and call chart.exporting.export() in your handlers:
/**
* ---------------------------------------
* This demo was created using amCharts 4.
*
* For more information visit:
* https://www.amcharts.com/
*
* Documentation is available at:
* https://www.amcharts.com/docs/v4/
* ---------------------------------------
*/
// Themes begin
am4core.useTheme(am4themes_animated);
// Themes end
// Create chart instance
var chart = am4core.create("chartdiv", am4charts.XYChart);
// Add data
chart.data = [{
"country": "USA",
"visits": 2025
}, {
"country": "China",
"visits": 1882
}, {
"country": "Japan",
"visits": 1809
}, {
"country": "Germany",
"visits": 1322
}, {
"country": "UK",
"visits": 1122
}, {
"country": "France",
"visits": 1114
}, {
"country": "India",
"visits": 984
}, {
"country": "Spain",
"visits": 711
}, {
"country": "Netherlands",
"visits": 665
}, {
"country": "Russia",
"visits": 580
}, {
"country": "South Korea",
"visits": 443
}, {
"country": "Canada",
"visits": 441
}, {
"country": "Brazil",
"visits": 395
}];
// Create axes
var categoryAxis = chart.xAxes.push(new am4charts.CategoryAxis());
categoryAxis.dataFields.category = "country";
categoryAxis.renderer.grid.template.location = 0;
categoryAxis.renderer.minGridDistance = 30;
categoryAxis.renderer.labels.template.adapter.add("dy", function(dy, target) {
if (target.dataItem && target.dataItem.index & 2 == 2) {
return dy + 25;
}
return dy;
});
var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
// Create series
var series = chart.series.push(new am4charts.ColumnSeries());
series.dataFields.valueY = "visits";
series.dataFields.categoryX = "country";
series.name = "Visits";
series.columns.template.tooltipText = "{categoryX}: [bold]{valueY}[/]";
series.columns.template.fillOpacity = .8;
var columnTemplate = series.columns.template;
columnTemplate.strokeWidth = 2;
columnTemplate.strokeOpacity = 1;
// ==================================================
document.getElementById("image").addEventListener("click", function () {
chart.exporting.export("png");
});
document.getElementById("pdf").addEventListener("click", function () {
chart.exporting.export("pdf");
});

Is it possible to show any image on top of bar when user hover any bar in Amcharts

I am working on amcharts and my requirement is to show an image and top of the image its value when user hover any column is it possible in amcharts using version 4 ?
/**
* ---------------------------------------
* This demo was created using amCharts 4.
*
* For more information visit:
* https://www.amcharts.com/
*
* Documentation is available at:
* https://www.amcharts.com/docs/v4/
* ---------------------------------------
*/
// Themes begin
am4core.useTheme(am4themes_animated);
// Themes end
// Create chart instance
var chart = am4core.create("chartdiv", am4charts.XYChart);
// Add data
chart.data = [{
"country": "USA",
"visits": 2025
}, {
"country": "China",
"visits": 1882
}, {
"country": "Japan",
"visits": 1809
}, {
"country": "Germany",
"visits": 1322
}, {
"country": "UK",
"visits": 1122
}, {
"country": "France",
"visits": 1114
}, {
"country": "India",
"visits": 984
}, {
"country": "Spain",
"visits": 711
}, {
"country": "Netherlands",
"visits": 665
}, {
"country": "Russia",
"visits": 580
}, {
"country": "South Korea",
"visits": 443
}, {
"country": "Canada",
"visits": 441
}, {
"country": "Brazil",
"visits": 395
}];
// Create axes
var categoryAxis = chart.xAxes.push(new am4charts.CategoryAxis());
categoryAxis.dataFields.category = "country";
categoryAxis.renderer.grid.template.location = 0;
categoryAxis.renderer.minGridDistance = 30;
categoryAxis.renderer.labels.template.adapter.add("dy", function(dy, target) {
if (target.dataItem && target.dataItem.index & 2 == 2) {
return dy + 25;
}
return dy;
});
var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
// Create series
var series = chart.series.push(new am4charts.ColumnSeries());
series.dataFields.valueY = "visits";
series.dataFields.categoryX = "country";
series.name = "Visits";
series.columns.template.tooltipText = "{categoryX}: [bold]{valueY}[/]";
series.columns.template.fillOpacity = .8;
var columnTemplate = series.columns.template;
columnTemplate.strokeWidth = 2;
columnTemplate.strokeOpacity = 1;
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
#chartdiv {
width: 100%;
height: 500px;
}
<script src="https://cdn.amcharts.com/lib/4/core.js"></script>
<script src="https://cdn.amcharts.com/lib/4/charts.js"></script>
<script src="https://cdn.amcharts.com/lib/4/themes/animated.js"></script>
<div id="chartdiv"></div>
As we can see when we hover any column it shows me a tooltip , but I want to show the image on top and its value on top of image when user hover any column , see the attached image .
There is an example of images on top of chart but i need to show image when its hover
https://www.amcharts.com/demos-v4/column-chart-images-top-v4/
Yes, you can do that. You need this extra configuration, especially tooltipHTML:
series.columns.template.tooltipHTML = '<div class="tooltip"><div><strong>{valueY}</strong></div><img src="https://cdn.pixabay.com/photo/2012/04/26/19/47/penguin-42936_960_720.png" alt="Linux"></div>';
series.columns.template.tooltipY = am4core.percent(0);
series.tooltip.pointerOrientation = "vertical";
series.tooltip.fontSize = 10;
series.tooltip.getFillFromObject = false;
series.tooltip.label.fill = "#000000";
series.tooltip.background.fill = "rgba(0, 0, 0, 0)";
series.tooltip.background.stroke = "rgba(0, 0, 0, 0)";
series.tooltip.background.filters.clear();
.tooltip {
display: flex;
flex-direction: column;
align-items: center;
}
.tooltip img {
width: 15px;
height: 15px;
}
Warning from the documentation: Text versus HTML
HTML tooltips are not supported by older Internet Explorer browsers. Such tooltips will also not export to images when exporting your chart.
It's important to know that if both tooltipText and tooltipHTML are set, the latter will take precedence on browsers that support it, falling back to the former on older browsers. Setting both might be a good strategy if you want to universally support all browsers.
If I put the above code in your example, we get the following result:
/**
* ---------------------------------------
* This demo was created using amCharts 4.
*
* For more information visit:
* https://www.amcharts.com/
*
* Documentation is available at:
* https://www.amcharts.com/docs/v4/
* ---------------------------------------
*/
// Themes begin
am4core.useTheme(am4themes_animated);
// Themes end
// Create chart instance
var chart = am4core.create("chartdiv", am4charts.XYChart);
// Add data
chart.data = [{
"country": "USA",
"visits": 2025
}, {
"country": "China",
"visits": 1882
}, {
"country": "Japan",
"visits": 1809
}, {
"country": "Germany",
"visits": 1322
}, {
"country": "UK",
"visits": 1122
}, {
"country": "France",
"visits": 1114
}, {
"country": "India",
"visits": 984
}, {
"country": "Spain",
"visits": 711
}, {
"country": "Netherlands",
"visits": 665
}, {
"country": "Russia",
"visits": 580
}, {
"country": "South Korea",
"visits": 443
}, {
"country": "Canada",
"visits": 441
}, {
"country": "Brazil",
"visits": 395
}];
// Create axes
var categoryAxis = chart.xAxes.push(new am4charts.CategoryAxis());
categoryAxis.dataFields.category = "country";
categoryAxis.renderer.grid.template.location = 0;
categoryAxis.renderer.minGridDistance = 30;
categoryAxis.renderer.labels.template.adapter.add("dy", function(dy, target) {
if (target.dataItem && target.dataItem.index & 2 == 2) {
return dy + 25;
}
return dy;
});
var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
// Create series
var series = chart.series.push(new am4charts.ColumnSeries());
series.dataFields.valueY = "visits";
series.dataFields.categoryX = "country";
series.name = "Visits";
series.columns.template.fillOpacity = .8;
series.columns.template.tooltipText = "{categoryX}: [bold]{valueY}[/]";
// ==================================================
series.columns.template.tooltipHTML = '<div class="tooltip"><div><strong>{valueY}</strong></div><img src="https://cdn.pixabay.com/photo/2012/04/26/19/47/penguin-42936_960_720.png" alt="Linux"></div>';
series.columns.template.tooltipY = am4core.percent(0);
series.tooltip.pointerOrientation = "vertical";
series.tooltip.fontSize = 10;
series.tooltip.getFillFromObject = false;
series.tooltip.label.fill = "#000000";
series.tooltip.background.fill = "rgba(0, 0, 0, 0)";
series.tooltip.background.stroke = "rgba(0, 0, 0, 0)";
series.tooltip.background.filters.clear();
// ==================================================
var columnTemplate = series.columns.template;
columnTemplate.strokeWidth = 2;
columnTemplate.strokeOpacity = 1;
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
#chartdiv {
width: 100%;
height: 500px;
}
.tooltip {
display: flex;
flex-direction: column;
align-items: center;
}
.tooltip img {
width: 15px;
height: 15px;
}
<script src="https://cdn.amcharts.com/lib/4/core.js"></script>
<script src="https://cdn.amcharts.com/lib/4/charts.js"></script>
<script src="https://cdn.amcharts.com/lib/4/themes/animated.js"></script>
<div id="chartdiv"></div>

How to change amcharts pie themes?

My HTML code is like this :
<div id="chartdiv" style="width: 100%; height: 362px;"></div>
My Javascript code is like this :
var chart;
var legend;
var chartData = [
{
"country": "Czech Republic",
"litres": 301.9
},
{
"country": "Ireland",
"litres": 201.1
},
{
"country": "Germany",
"litres": 165.8
},
{
"country": "Australia",
"litres": 139.9
},
{
"country": "Austria",
"litres": 128.3
},
{
"country": "UK",
"litres": 99
},
{
"country": "Belgium",
"litres": 60
}
];
console.log(chartData);
AmCharts.ready(function () {
// PIE CHART
chart = new AmCharts.AmPieChart();
chart.dataProvider = chartData;
chart.titleField = "country";
chart.valueField = "litres";
// WRITE
chart.write("chartdiv");
});
Demo and complete code is like this : https://jsfiddle.net/oscar11/4qdan7k7/2/
I want to change amchart themes like this : https://www.amcharts.com/demos/simple-pie-chart/
I add light.js library, but the themes not change
Any solution to solve my problem?
You need to specify the theme option while initializing as below and also make use of makeChart directly instead of Amcharts.AmPieChart(). Your updated code would be:
AmCharts.makeChart("chartdiv", {
"type": "pie",
"theme": "light",
"dataProvider": chartData,
"valueField": "litres",
"titleField": "country",
"export": {
"enabled": true
}
});
UPDATED FIDDLE

amcharts serial Column With Rotated Series color array not working

I have some issues with serial chart (Column With Rotated Series).
My dataProvider does not have a color field. I used the colors option with an array of colors, but it still does not work.
Please help me.
http://jsfiddle.net/bfbgz0sc/1/
zeroin thank for your response ,
amCharts Help & Support said to me , each color within the array is reserved for every individual graph.
Unfortunately rather than defining all colors within the dataprovider is no other ways to do it.
Code Snippet:
//input data
var input=[{
"country": "USA",
"visits": 3025
}, {
"country": "China",
"visits": 1882
}, {
"country": "Japan",
"visits": 1809
}, {
"country": "Germany",
"visits": 1322
}, {
"country": "UK",
"visits": 1122
}, {
"country": "France",
"visits": 1114
}, {
"country": "India",
"visits": 984
}, {
"country": "Spain",
"visits": 711
}, {
"country": "Netherlands",
"visits": 665
}, {
"country": "Russia",
"visits": 580
}, {
"country": "South Korea",
"visits": 443
}, {
"country": "Canada",
"visits": 441
}];
//your custom colors
var colors= ['#FF6600', '#FCD202', '#B0DE09', '#0D8ECF', '#2A0CD0', '#CD0D74', '#CC0000', '#00CC00', '#0000CC', '#DDDDDD', '#999999', '#333333', '#990000']
//inject color attribute with value
for (i = 0; i < input.length; i++) {input[i].color = colors[i];}
//amCharts initialization code goes here
...
...
Output
Checkout this JSFiddle to see the solution in action:
http://jsfiddle.net/bfbgz0sc/4/
Colors property works only for separate graphs, not for data items. So you should add colors to dataProvider.

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