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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Warning: UNFllong's may lose precision when converted to UNFldoubles 
UNFldouble mantissa 53 
sizeof UNFllong unsigned int 8 
> ### * <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("UNF-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('UNF')
> 
> assign(".oldSearch", search(), env = .CheckExEnv)
> assign(".oldNS", loadedNamespaces(), env = .CheckExEnv)
> cleanEx(); ..nameEx <- "unf"
> 
> ### * unf
> 
> flush(stderr()); flush(stdout())
> 
> ### Name: unf
> ### Title: universal numeric fingerprint
> ### Aliases: unf as.unf as.character.unf unf2base64
> ### Keywords: misc debugging
> 
> ### ** Examples
> 
> 
> # simple example
> v=1:100/10 +.0111 
> vr=signif(v,digits=2)
> 
> # print.unf shows in  standard format, including version and digits
> print(unf(v))
[1] "UNF:3:10:rOk2V32CW294EW6fP6ik1Q=="
> 
> # as.character will return base64 section only for comparisons
> as.character(unf(v))
[1] "UNF:3:10:rOk2V32CW294EW6fP6ik1Q=="
> 
> # this is false,  since computed  base64 values UNF's differ
> as.character(unf(v))==as.character(unf(vr))
[1] FALSE
> 
> # this is true,  since computed UNF's base64 values are the same at 2 significant digits
> as.character(unf(v, digits=2))==as.character(unf(vr))
[1] FALSE
> 
> # WARNING: this is false, since UNF's values are the same, but 
> # number of calculated digits differ , probably not the comparison
> # you intend
> 
> identical(unf(v,digits=2),unf(vr))
[1] FALSE
> 
> # compute a fingerprint of longley at 10 significant digits of accuracy
> # this fingerprint can be stored and verified when reading the dataset
> # later
> data(longley)
> mf10<-unf(longley,digits=10);
> 
> #printable representation, prints seven UNF's, one for each vector
> print(mf10)
[1] "UNF:3:10:30ObC1h8QA1WhSE0FWmYhA==" "UNF:3:10:FyY+kxfdF13JoTH0ascNjQ=="
[3] "UNF:3:10:lRU/Y4WYUNjNy5MZ4F09aA==" "UNF:3:10:ULOA0HC94ULNFvbrGkG0cA=="
[5] "UNF:3:10:jINPpf9fC5HmM1c6m5E2Eg==" "UNF:3:10:gm1lOzG/ziBKGGvy6TCVRg=="
[7] "UNF:3:10:TnSDq3rRD8MHSCQZNUHB9w=="
> 
> #  summarizes the base64 portion of the unf for each vector into a 
> # single  base64 UNF representing entire dataset
> summary(mf10)
[1] "UNF:3:32:9WjBbKMpKv3dibqeLoCTkg=="
> 
> 
> 
> 
> ### * <FOOTER>
> ###
> cat("Time elapsed: ", proc.time() - get("ptime", env = .CheckExEnv),"\n")
Time elapsed:  0.15 0.01 1.04 0 0 
> grDevices::dev.off()
null device 
          1 
> ###
> ### Local variables: ***
> ### mode: outline-minor ***
> ### outline-regexp: "\\(> \\)?### [*]+" ***
> ### End: ***
> quit('no')