How to create various types of statistical charts using ECharts and golang

How to use ECharts and golang to create various types of statistical charts

With the advent of the big data era, data visualization plays a vital role in all walks of life character of. Data visualization not only helps us better understand and interpret data, but also helps us discover patterns and trends in the data. ECharts is a very powerful open source chart library that can help us easily create various types of statistical charts. This article will introduce how to use ECharts and golang to create various types of statistical charts, and attach specific code examples.

First of all, we need to introduce ECharts related dependencies into the golang project. ECharts provides an open source library for golang, which makes it easy to use ECharts in golang. We can use the go get command to obtain the library:

go get -u github.com/go-echarts/go-echarts@v1.0.0

After installing the dependencies, we can start using ECharts to create various types of statistical charts. The following takes bar charts and line charts as examples to introduce how to use ECharts to create these two types of statistical charts.

Create a histogram

First, we need to create a histogram object. You can create a histogram object by calling the gcharts.NewBar method:

bar := charts.NewBar()

Next, we can add data to the histogram object. Add X-axis and Y-axis data by calling the bar.AddXAxis and bar.AddYAxis methods:

bar.AddXAxis([]string{"Apple", "Banana", "Orange", "Grape", "Watermelon"})
bar.AddYAxis("Fruits", []int{10, 15, 20, 12, 25})

Then, we can call bar. Render method to render this histogram object and save the generated HTML code to a file:

f, err := os.Create("bar.html")
if err != nil {
    log.Fatal(err)
}
bar.Render(f)

Finally, we can open the generated bar.html## in the browser #File to view this histogram:

open bar.html

Create a line chart

Similar to creating a histogram, we also need to create a line chart object first. You can create a line chart object by calling the

gcharts.NewLine method:

line := charts.NewLine()

Then, we can add data to the line chart object. Add X-axis and Y-axis data by calling the

line.AddXAxis and line.AddYAxis methods:

line.AddXAxis([]string{"Jan", "Feb", "Mar", "Apr", "May", "Jun"})
line.AddYAxis("Sales", []int{120, 200, 150, 80, 70, 110})

Next, we can also call the

line.Render method to render this line chart object and save the generated HTML code to a file:

f, err := os.Create("line.html")
if err != nil {
    log.Fatal(err)
}
line.Render(f)

Finally, we can open the generated

line.html in the browser File to view this line chart:

open line.html

Through the above steps, we can easily use ECharts and golang to create various types of statistical charts. In addition to bar charts and line charts, ECharts also supports various other types of statistical charts, such as pie charts, radar charts, etc. This can be achieved by calling different methods and setting different parameters. I hope this article can be helpful to you when using ECharts and golang to create statistical charts. If you have any questions, please feel free to leave a message.

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