How to use TERR's RinR package inside TERR/Spotfire

terr_RinR.r

# Download: http://tap.tibco.com/ -> "Samples" tab -> RinR -> "Try Now" button
# Docs:     http://docs.tibco.com/pub/enterprise-runtime-for-R/2.5.0/doc/html/RinR/RinR-package.html

########################################
# Setup
########################################

library(RinR)
library(Sdatasets)

########################################
# Tell TERR where to find R
########################################

# Option 1 - Explicit & Temporary

RinR::pushPATH("c:/Program Files/R/R-3.1.1/bin")

# Option 2 - Explicit & Permanent
#
# Modify /engine/etc/TERRprofile.site
# Add: options(RinR_R_FULL_PATH = "c:/Program Files/R/R-3.1.1/bin")

# Option 3  - Do nothing!
#
# TERR will search the PATH and pick the first engine it finds

#########################################
# Show which engine is used
#########################################

REvaluate(version$version.string, REvaluator)


#########################################
# Run a computation
#########################################

# Method 1 - Direct

x   <- 1:100
val <- REvaluate(sum(x), REvaluator, data = c("x"))   # val == 5050

# Method 2 - Via Parameter Input (i.e. string passed into Spotfire data function)

rcode <- "x <- 1:100; sum(x)"
val   <- REvaluate(eval(parse(text = rcode)), REvaluator, data = c("rcode"))  # val == 5050


#########################################
# Return a graph
#########################################


# base
myplot <- RGraph(hist(fuel.frame$Weight),
            data = "fuel.frame",
            display = TRUE)

# lattice (need explicit 'print')
myplot <- RGraph(print(xyplot(Fuel ~ Weight | Type, data=fuel.frame)), 
            packages="lattice",
            data = "fuel.frame",
            display = FALSE)

# ggplot2 (need explicit 'print')
myplot <- RGraph(print(qplot(x = Fuel, geom = "histogram", data = fuel.frame)), 
            packages="ggplot2", 
            data = "fuel.frame", 
            display = TRUE)


#########################################
# Get graph into Spotfire
#########################################

# 1. just set 'myplot' as an output from the script
# 2. assign that output to a 'binary' label in a text area