The R Project for Statistical Computing

project page: http://www.r-project.org
code syntax: http://cran.r-project.org/doc/manuals/R-intro.html

Wrapping

input: ”.R” script file
input parameters syntax
- variable:
```
?{variable_name}
```
- formula:
```
![formula_expression]
```
output: detects output expressions like
```
cat(“z =”,...
```
lower case output taken as scalar float, upper case as 1D array of float
running progress: last line of ”.Rout” file

Example

input file:

branin <- function(x) {
	x1 <- x[1]*15-5   
	x2 <- x[2]*15     
	(x2 - 5/(4*pi^2)*(x1^2) + 5/pi*x1 - 6)^2 + 10*(1 - 1/(8*pi))*cos(x1) + 10
}
 
cat("X = ",c( ?a , ?b ),"\n");
cat("z = ",branin(c( ?a , ?b )),"\n");

input variables: a, b
output: z (scalar), X (array)

Installation

user side:
- unzip
  plugin-R.zip
  in Promethee installation directory,
- restart Promethee GUI.
server side:
- unzip
  plugin-R.zip
  in Promethee installation directory,
- open shell console, check “R CMD BATCH Promethee_Install_Path/examples/branin.R” creates a “branin.Rout” file,
- add
```
<CODE name="R" cplugin="file:./plugins/calc/R.cplugin.jar" command="R CMD BATCH" />
```
  line in calculator.xml file inside ”<calculator>” tag,
- wait for configuration refresh (5 s. if calculator is free).