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  Myungja Anna Koh

Tutorial

The first step is to visualize the financial data.

11/6/2021

 

R-Programming & R studio

  It may surprise you that computer programming is suddenly appearing on the artist's blog, but in fact, this is the foundation work before I visualize financial analytic data. Now I am currently starting to work as an intern at Girin Instruments company. My role is to imagine the statistically analyzed data. For this reason, I am studying programming called R-Programming. Below are the basics of the related programming. In the future, this content will be regularly organized into a category called Art & Data analysis. 

  The R program is a programming language for statistical analysis and graphics developed in 1993 at the University of Auckland, New Zealand. It is an essential analysis tool in data science and data analysis. It can be operated on various operating systems such as Windows, Unix, and macOS, and since it is open-source, anyone can use it for free. Above all, it is a programming language, but it is interactive, and there are various graphic sources linked to basic statistical calculations. Users can create their program packages and share them freely for free. (https://shiny.rstudio.com/gallery/)

  Below is a chart comparing it to other statistical program packages from Stony Brook University Dr. Hyang-Joo Kim's lecture notes.
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  Because I am working on a picture, I like that the graphic function is excellent. With the advancement of IT technology, there is an increasing need to analyze and organize data that has grown exponentially to the extent that traditional data processing methods cannot handle it. In addition, if these data analysis techniques are to be transmitted to the general public, they must be well visualized. R program is the best alternative to solve the needs of the times.

 Below is a site where you can download an R program package that anyone can use for free.

Click on the red rectangular area in the lower-left menu bar. 
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  ​Below is a link to download the R program package set for the operating system. Click on the red area below.
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   ​This will open the installation window where you can install the program as shown below. Click to install. 
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  Below are the icons that appear on the screen and what they look like when you click them.
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  It is R Studio that provides an IDE (Integrated Development Environment) that makes R programming easier and more efficient.

Below is a site where you can download R Studio. 
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  ​If you scroll down the homepage, you will see a free download button as shown below. Click this button.
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  ​When you click the download button, the following screen appears. Install the program package for your operating system.
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 ​When you run RStudio, you will see the program editing window as shown below.
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 ​The above area performs the following functions:

R script: A file (extension: .R) in which an R program is saved can be created, loaded, and edited, and a statement can be directly executed. Move the cursor to the statement to be executed and press ctrl-enter to display the result on the console screen.
R console: You can enter R commands directly in the interactive mode. The dialog box has a > mark, which is called a prompt, and provides an environment where you can enter a command and get the result immediately by hitting enter.
R environment : Shows the status of objects created while executing R commands, and also shows the history of past commands.
Graphical output: The result of the picture is printed and displayed, the package is installed, and the status is shown. Also, help for R language and packages is provided.

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