golang plot library installation

Golang is a powerful programming language that comes with an extensive standard library and many powerful third-party libraries that can help developers complete various tasks easily. In this article, we will focus on installing Golang’s plot library.

Golang’s plot library makes drawing graphics easier. It is a library written in pure Golang that can easily draw various types of graphs such as scatter plots, line plots, histograms, etc. It also provides many convenient methods that can help developers easily customize drawings to make the graphics look more beautiful.

Installing Golang's plot library is very simple and only requires a few simple steps to complete. Below is a simple tutorial to help you install Golang's plot library.

Step 1: Install dependencies

Before installing Golang’s plot library, we need to install some dependencies. First, we need to install the GNU plot package. GNU Plot is a powerful open source drawing tool that can generate various types of graphics. We use GNU plot to work together with Golang's plot library, which is very convenient when generating graphics.

To install GNU Plot, we can use the following command:

sudo apt-get install gnuplot

Step 2: Install Golang’s plot library

Installing Golang’s plot library is very simple. We just need to use the go get command. In Golang’s command line, type the following command:

go get github.com/gonum/plot

This will automatically download and install Golang’s plot library. The installation process may take some time, depending on the speed of your internet connection and the performance of your computer. After the installation is complete, you can find the installation directory of the plot library in $GOPATH/pkg.

Step 3: Test

We have completed the installation of Golang’s plot library, now it is time to test it. For this we need to write a simple program in Golang.

Create a new file in your editor and copy the following code into the file:

import (
    "math/rand"
    "time"
 
    "gonum.org/v1/plot"
    "gonum.org/v1/plot/plotter"
    "gonum.org/v1/plot/plotutil"
    "gonum.org/v1/plot/vg"
)
 
func main() {
    rand.Seed(time.Now().UnixNano())
    n := 50
    xys := make(plotter.XYs, n)
    for i := range xys {
        xys[i].X = rand.Float64() * 10
        xys[i].Y = rand.Float64()*10 + xys[i].X
    }
    p, _ := plot.New()
    err := plotutil.AddScatters(p, "Points", xys)
    if err != nil {
        panic(err)
    }
    if err := p.Save(4*vg.Inch, 4*vg.Inch, "points.png"); err != nil {
        panic(err)
    }
}

This program will generate a scatter plot and save it to a file called points .png file. To run the program, use the following command:

go run filename.go

This command will compile and run our program and generate a file named points. png file. Open it with an image viewer and you will see a beautiful scatter plot.

Conclusion

In this article, we introduced how to install the plot library in Golang. This is a powerful library that helps you draw various types of graphics easily. Although the installation process may take some time, once it is completed, you can start using Golang's plot library to draw a variety of beautiful graphics. If you want to learn more, you can continue to check out the plot library documentation for more information.

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