How to Create a Pie Chart in JavaScript Using Database Values?
Along with HTML and CSS, the computer language known as JavaScript, or JS, is one of the foundational elements of the World Wide Web. 98% of websites will utilize JavaScript on the user end for web page behavior by 2022, frequently adding third-party libraries.
However, inexperienced software engineers often struggle with how to create pie charts in JavaScript. It’s also worth knowing how to create a pie chart in JavaScript using database values.
With FusionCharts, designing beautiful dashboards for online and mobile applications is simple. A standard API, rich documentation, and cross-browser compatibility make building interactive and responsive charts simpler.
In addition, most developers like the MySQL database for utilizing data from a database to create a PHP chart. This platform has everything from fundamental charts like line, column, and pie to domain-specific charts like heatmaps and radar. This article will teach you how to make a JavaScript pie chart.
What Is a Pie Chart?
Using graphs and charts may make statistical data easier to interpret for businesses. When you need to present and quantify simple data, the pie chart is an excellent option because it’s straightforward to build and analyze.
A pie chart is a circle with multiple pieces split into two dimensions. Slices only display a portion of the data; the full graph shows all of it.
Your pie chart will only have two halves if you wish to illustrate a product line’s efficiency, your pie chart will only have two halves and two lines that account for 50% of turnover. Slice pivoting, dragging, and three-dimensional charting are a few consequences.
There are numerous advantages to using this type of chart. Pie charts provide precise visual representations.
These charts present information as a part of a whole, making it easy for even the most inexperienced audience to comprehend data.
Pie charts allow users to compare two quantitative comparisons, allowing viewers to interpret data. You may change the data in the pie chart to accentuate specific points.
How to Create a Pie Chart in JavaScript?
Using JavaScript, you may make many kinds of pie charts. You may also alter charts in FusionCharts to suit your unique requirements, such as financial charts or JavaScript pie charts.
Let’s look at some examples of pie charts you may create to demonstrate the importance of pie charts.
2D Pie Chart
Pie charts illustrate how data such as sales by product category or brand market share in a specific sector are split or contributed as a proportion.
The visualization might look crowded if there is a lot of data in a single pie chart. However, this diagram functions well with a small number of components.
Another alternative is to make your way around the circle, starting with the most prominent pieces. The entire sum of the data should be 100.
Below is a sample JavaScript code for a 2D pie chart made with FusionCharts:
| const dataSource = { chart: { caption: “Market Share of Web Servers”, plottooltext: “<b>$percentValue</b> of web servers run on $label servers”, showlegend: “1”, showpercentvalues: “1”, legendposition: “bottom”, usedataplotcolorforlabels: “1”, theme: “fusion” }, data: [ { label: “Apache”, value: “32647479” }, { label: “Microsoft”, value: “22100932” }, { label: “Zeus”, value: “14376” }, { label: “Other”, value: “18674221” } ] }; FusionCharts.ready(function() { var myChart = new FusionCharts({ type: “pie2d”, renderAt: “chart-container”, width: “100%”, height: “100%”, dataFormat: “json”, dataSource }).render(); }); |
3D Pie Chart
The pie 3D graphic is a circle that we divide into sectors, each representing a proportion of the total values in a dataset.
The pie 3D chart improves the visual attractiveness of the basic pie chart by adding depth. The graph does a great job of illustrating how the percentage of each part fits into the larger image.
The magnitude of the dependent variable has an inverse relationship with the radius of the arc on the graph’s circumference. Arcs join the circle’s center with radial lines, which split the pie into segments.
It shows how each aspect, such as the breakdown of sales by product category or the market share of various brands in a specific sector, contributed in percentage.
Below is a sample JavaScript code for a 3D pie chart made with FusionCharts:
| const dataSource = { chart: { caption: “Recommended Portfolio Split”, subcaption: “For a net-worth of $1M”, showvalues: “1”, showpercentintooltip: “0”, numberprefix: “$”, enablemultislicing: “1”, theme: “fusion” }, data: [ { label: “Equity”, value: “300000” }, { label: “Debt”, value: “230000” }, { label: “Bullion”, value: “180000” }, { label: “Real-estate”, value: “270000” }, { label: “Insurance”, value: “20000” } ] }; FusionCharts.ready(function() { var myChart = new FusionCharts({ type: “pie3d”, renderAt: “chart-container”, width: “100%”, height: “100%”, dataFormat: “json”, dataSource }).render(); }); |
Nested Pie Chart
A graph that enables the presentation of symmetrical and asymmetrical tree structures in a condensed pie-like shape is known as a multi-level pie chart or nested pie chart.
The matching data value defines the ratio of each segment. Additionally, this graph can show an organization chart, data from interconnected trees (such as friends of friends), a breakdown of sales by category, etc.
Make sure to color the parts to make them easy to interpret, since the nested pie chart makes it easier to see a lot of hierarchical data. This is a welcomed and advised practice.
Donut Pie Chart
A pie chart variant called a donut chart has a vacant area in the middle where you write helpful information about the displayed data. It communicates the ratio of parts inside a bigger image. Users can also employ doughnut slices to draw attention to particular data points.
For instance, the size of the dependent variable is proportional to the arc length on the graph’s circumference.
It displays the data composition that makes up 100 percent, displaying the population’s division into age groups and the financial impact of different product categories.
TAGS: JAVASCRIPT, PHP CHART, PIE CHART
