R : Copyright 2005, The R Foundation for Statistical Computing
Version 2.1.1  (2005-06-20), ISBN 3-900051-07-0

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> ### * <HEADER>
> ###
> attach(NULL, name = "CheckExEnv")
> assign(".CheckExEnv", as.environment(2), pos = length(search())) # base
> ## add some hooks to label plot pages for base and grid graphics
> setHook("plot.new", ".newplot.hook")
> setHook("persp", ".newplot.hook")
> setHook("grid.newpage", ".gridplot.hook")
> 
> assign("cleanEx",
+        function(env = .GlobalEnv) {
+ 	   rm(list = ls(envir = env, all.names = TRUE), envir = env)
+            RNGkind("default", "default")
+ 	   set.seed(1)
+    	   options(warn = 1)
+ 	   delayedAssign("T", stop("T used instead of TRUE"),
+ 		  assign.env = .CheckExEnv)
+ 	   delayedAssign("F", stop("F used instead of FALSE"),
+ 		  assign.env = .CheckExEnv)
+ 	   sch <- search()
+ 	   newitems <- sch[! sch %in% .oldSearch]
+ 	   for(item in rev(newitems))
+                eval(substitute(detach(item), list(item=item)))
+ 	   missitems <- .oldSearch[! .oldSearch %in% sch]
+ 	   if(length(missitems))
+ 	       warning("items ", paste(missitems, collapse=", "),
+ 		       " have been removed from the search path")
+        },
+        env = .CheckExEnv)
> assign("..nameEx", "__{must remake R-ex/*.R}__", env = .CheckExEnv) # for now
> assign("ptime", proc.time(), env = .CheckExEnv)
> grDevices::postscript("session-Examples.ps")
> assign("par.postscript", graphics::par(no.readonly = TRUE), env = .CheckExEnv)
> options(contrasts = c(unordered = "contr.treatment", ordered = "contr.poly"))
> options(warn = 1)    
> library('session')
> 
> assign(".oldSearch", search(), env = .CheckExEnv)
> assign(".oldNS", loadedNamespaces(), env = .CheckExEnv)
> cleanEx(); ..nameEx <- "session"
> 
> ### * session
> 
> flush(stderr()); flush(stdout())
> 
> ### Name: save.session
> ### Title: Save and restore session information, including loaded packages
> ###   and attached data objects.
> ### Aliases: save.session restore.session
> ### Keywords: data programming
> 
> ### ** Examples
> 
> 
>   ls(all=TRUE) # show all data objects
[1] "..nameEx"     ".Random.seed"
>   search()  # list search path
 [1] ".GlobalEnv"        "package:session"   "CheckExEnv"       
 [4] "package:methods"   "package:stats"     "package:graphics" 
 [7] "package:grDevices" "package:utils"     "package:datasets" 
[10] "Autoloads"         "package:base"     
> 
>   # save the current R session to the file "RSession.Rda"
>   save.session("RSession.Rda")
Warning in save.session("RSession.Rda") : Open graphics devices will not be saved or restored.
Saving search path..
Saving list of loaded packages..
Saving all data...
Done.
> 
>   ## Not run: 
> ##D   # exit R without saving data
> ##D   q("no")
> ##D 
> ##D   # restart R
> ##D   R 
> ##D   
> ## End(Not run)
> 
>   # load a saved R session from "RSession.Rda"
>   restore.session("RSession.Rda")
Loading all data...
Loading packages...
Restoring search path...
Done.
> 
>   ls(all=TRUE) # show all data objects
[1] "..nameEx"     ".Random.seed"
>   search()  # list search path
 [1] ".GlobalEnv"        "package:session"   "CheckExEnv"       
 [4] "package:methods"   "package:stats"     "package:graphics" 
 [7] "package:grDevices" "package:utils"     "package:datasets" 
[10] "Autoloads"         "package:base"     
> 
> 
> 
> 
> cleanEx(); ..nameEx <- "texteval"
> 
> ### * texteval
> 
> flush(stderr()); flush(stdout())
> 
> ### Name: texteval
> ### Title: Evaluate string(s) containing R commands and return the text
> ###   transcript or printed results
> ### Aliases: capture texteval printed
> ### Keywords: data programming
> 
> ### ** Examples
> 
> 
> # define a script string
> script <- "x <- rnorm(100)\ny <- x + rnorm(100,0.25)\nsummary(lm(y~x))"
> 
> # evaluate the script string, returning a transcript.
> result <- texteval(script, "\n")
> cat(result)

> x <- rnorm(100)

> y <- x + rnorm(100, 0.25)

> summary(lm(y ~ x))

Call:
lm(formula = y ~ x)

Residuals:
    Min      1Q  Median      3Q     Max 
-1.8768 -0.6138 -0.1395  0.5394  2.3462 

Coefficients:
            Estimate Std. Error t value Pr(>|t|)    
(Intercept)  0.21231    0.09699   2.189    0.031 *  
x            0.99894    0.10773   9.273 4.58e-15 ***
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 

Residual standard error: 0.9628 on 98 degrees of freedom
Multiple R-Squared: 0.4674,	Adjusted R-squared: 0.4619 
F-statistic: 85.99 on 1 and 98 DF,  p-value: 4.583e-15 

> 
> # evaluate the script string, returning the printed output.
> result <- printed(script, "\n")
> cat(result)

Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-2.74179 -0.56139 -0.01749  0.67973  1.84843 

Coefficients:
            Estimate Std. Error t value Pr(>|t|)    
(Intercept)  0.29845    0.09910   3.012  0.00331 ** 
x            1.10622    0.09626  11.492  < 2e-16 ***
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 

Residual standard error: 0.9906 on 98 degrees of freedom
Multiple R-Squared: 0.574,	Adjusted R-squared: 0.5697 
F-statistic: 132.1 on 1 and 98 DF,  p-value: < 2.2e-16 

> 
> 
> 
> 
> ### * <FOOTER>
> ###
> cat("Time elapsed: ", proc.time() - get("ptime", env = .CheckExEnv),"\n")
Time elapsed:  0.15 0.02 0.17 0 0 
> grDevices::dev.off()
null device 
          1 
> ###
> ### Local variables: ***
> ### mode: outline-minor ***
> ### outline-regexp: "\\(> \\)?### [*]+" ***
> ### End: ***
> quit('no')