BATCH

BATCH, R programs which illustrate how an R program can be executed in batch mode.

In particular, a file might be created, called "example1.r", and containing the commands:

x <- c(1,2,3,4,5,6)   # Create ordered collection (vector)
y <- x^2              # Square the elements of x
print(y)              # print (vector) y
mean(y)               # Calculate average (arithmetic mean) of (vector) y; result is scalar
var(y)                # Calculate sample variance
lm_1 <- lm(y ~ x)     # Fit a linear regression model "y = f(x)" or "y = B0 + (B1 * x)" 
                      # store the results as lm_1
print(lm_1)           # Print the model from the (linear model object) lm_1
summary(lm_1)         # Compute and print statistics for the fit of the (linear model object) lm_1 par(mfrow=c(2, 2))    # Request 2x2 plot layout
q()                   # quit
      

On a UNIX system, the R program could be invoked to carry out these commands, using a UNIX shell script that might read:

        R --vanilla < example1.r > example1_output.txt
      

Licensing:

The computer code and data files on this web page are distributed under the MIT license

Reference:

1. Joseph Adler,
   R in a Nutshell,
   O'Reilly, 2009,
   ISBN13: 978-0-596-80170-0.
2. http://www.r-project.org, the official R web site.

Examples and Tests:

• example1.r, a sample R file;
• example1.sh, a BASH shell script to run R with the input file.
• example1_output.txt, the output file.

• example2.r, a sample input file;
• survey.txt, a data file to be analyzed.
• example2_output.txt, the output file.

EXAMPLE3 requires that the library caTools be installed.

• example3.r, a sample input file;
• example3_output.txt, the output file.
• mandelbrot.gif, an image of the Mandelbrot set, created by the commands.
• mandelbrot-0.png, a PNG version.
• mandelbrot-1.png, a PNG version.
• mandelbrot-2.png, a PNG version.
• mandelbrot-3.png, a PNG version.
• mandelbrot-4.png, a PNG version.
• mandelbrot-5.png, a PNG version.
• mandelbrot-6.png, a PNG version.
• mandelbrot-7.png, a PNG version.
• mandelbrot-8.png, a PNG version.
• mandelbrot-9.png, a PNG version.
• mandelbrot-10.png, a PNG version.
• mandelbrot-11.png, a PNG version.
• mandelbrot-12.png, a PNG version.
• mandelbrot-13.png, a PNG version.
• mandelbrot-14.png, a PNG version.
• mandelbrot-15.png, a PNG version.
• mandelbrot-16.png, a PNG version.
• mandelbrot-17.png, a PNG version.
• mandelbrot-18.png, a PNG version.
• mandelbrot-19.png, a PNG version.