Nothing
## Common functions
#Paste = function(x,...) paste(x,...,sep="",collapse="")
##' get with a default if na or NULL
##'
getWithDefault <- function(x, default)
if(is.null(x) || is.na(x)) {
default
} else {
x
}
##' some DEBUG call
DEBUG = function(...) {
if(0)
cat(paste(...,sep=" ",collapse=" "),"\n")
}
##' simpler Paste
Paste = function(..., sep="", collapse="") {
x = unlist(list(...))
x = x[!is.na(x)]
x = x[x != "NA"]
paste(x, sep=sep, collapse=collapse)
}
PasteWithComma = function(...) {
args = unlist(list(...))
args = args[!is.na(args)]
paste(args, sep="", collapse=", ")
}
stripWhiteSpace = function(str) {
sub('[[:space:]]+$', '', str) ## from ?gsub
sub('^[[:space:]]+', '', str) ## from ?gsub
return(str)
}
## what type of object is thixs and a size
str2 <- function(obj) {
md <- mode(obj)
if (is.matrix(obj)) md <- "matrix"
obj.class <- oldClass(obj)
if (!is.null(obj.class)) {
md <- obj.class[1]
}
return(md)
}
quoteIfNeeded = function(str) {
if(length(grep('^\\".*\\"$', str, perl=TRUE)) > 0 ||
length(grep("^\\'.*\\'$", str, perl=TRUE)) > 0 )
return(str)
else
return(paste('"',str,'"',sep="",collapse=""))
}
## ReadParseEvaL -- saves typing
rpel = function(string, envir=.GlobalEnv) {
eval(parse(text=string), envir=envir)
}
showErrorMessage = function() { # leave here for scoping on command
message = Paste("Error:",
"\n\t",geterrmessage())
gmessage(message,icon="error")
stop()
}
## Push and Pop -- for convenience
Push = function(v,d) c(v,d)
Pop = function(v) ifelse(length(v) > 1, v[-length(v)], NA)
### is functions
is.rJavaObject = function(obj) {
is(obj,"rJavaObject")
}
is.guiWidget = function(obj) {
is(obj,"guiWidget")
}
is.gWidget = function(obj) {
is(obj,"gWidgetrJava")
}
is.gWindow = function(obj) {
is(obj,"gWindowrJava")
}
is.gComponent = function(obj) {
is(obj,"gComponentrJava")
}
is.gContainer = function(obj) {
is(obj,"gContainer")
}
is.gImage = function(obj) {
is(obj,"gImagerJava")
}
is.gLabel = function(obj) {
is(obj,"gLabelrJava")
}
is.gMenu = function(obj) {
is(obj,"gMenurJava")
}
is.gEditDataFrame=function(obj) {
stop("deprecated, use is.gGrid")
}
is.gGrid = function(obj) {
is(obj,"gGridrJava")
}
is.invalid = function(obj) {
while(!is.rJavaObject(obj))
obj = obj@block
ifelse("<invalid>" %in% class(obj), TRUE, FALSE)
}
## used to check output
is.empty = function(obj) {
if(is.null(obj) || is.na(obj) || obj == "") {
return(TRUE)
} else {
return(FALSE)
}
}
## for showing only possible values
is.dataframelike = function(obj) {
if(is.data.frame(obj) || is.matrix(obj) ||
is.numeric(obj) || is.logical(obj) ||
is.factor(obj)) {
return(TRUE)
} else {
return(FALSE)
}
}
## ## check if a gtkTreeViewCOlumn, make no GTK language
## is.gdataframecolumn = function(obj) {
## if(class(obj)[1] == "GtkTreeViewColumn")
## return(TRUE)
## else
## return(FALSE)
## }
## Function to convert back and forth between R classes and GObject classes
RtoGObjectConversion = function(obj) {
if("gComponent" %in% class(obj)) return("GObject")
if(is.list(obj)) return("GObject")
Klasse = class(obj)[1] # silly name?
switch(Klasse,
"integer"="gint",
"numeric"="gdouble",
"gtk"="GObject",
"logical" = "gboolean",
"gchararray"
)
}
### these are used by gvarbrowser
## This is from browseEnv in base
## what type of object is thixs and a size
str1 <- function(obj) {
md <- mode(obj)
lg <- length(obj)
objdim <- dim(obj)
if (length(objdim) == 0)
dim.field <- paste("length:", lg)
else {
dim.field <- "dim:"
for (i in 1:length(objdim)) dim.field <- paste(dim.field,
objdim[i])
if (is.matrix(obj))
md <- "matrix"
}
obj.class <- oldClass(obj)
if (!is.null(obj.class)) {
md <- obj.class[1]
if (inherits(obj, "factor"))
dim.field <- paste("levels:", length(levels(obj)))
}
list( type = md, dim.field = dim.field)
}
## what type of object is thixs and a size
str2 <- function(obj) {
md <- mode(obj)
if (is.matrix(obj)) md <- "matrix"
obj.class <- oldClass(obj)
if (!is.null(obj.class)) {
md <- obj.class[1]
}
return(md)
}
## untaint a variable name so that $ can be used
untaintName = function(objName) {
if (length(grep(" |\\+|\\-|\\*|\\/\\(|\\[|\\:",objName)) > 0) {
objName=Paste("\"",objName,"\"")
}
return(objName)
}
## try to stip off data frame stuff in fron to DND target
findDataParent = function(x) {
child = sub(".*]]","",x)
child = sub(".*\\$","",child)
parent = sub(Paste(child,"$"),"",x)
parent = sub("\\$$","",parent)
return(list(child=child,parent=parent))
}
## basically repeat findDataParent until no parent
findRootObject = function(x) {
x = sub("\\[\\[.*","",x)
x = sub("\\$.*","", x)
return(x)
}
## get does not work with name$component, this gets around that
## returns NULL if not available
getObjectFromString = function(string="", envir=.GlobalEnv) {
tmp = try(get(string, envir), silent = TRUE)
if(!inherits(tmp, "try-error")) return(tmp)
tmp = try(rpel(string,envir), silent=TRUE)
if(!inherits(tmp, "try-error")) return(tmp)
## out of chances
return(NULL)
}
## get the names of the object, if available (datastores)
getNamesofObject = function(string="") {
## if empty string, get variables in .GlobalEnv
if(string == "") {
## return objects of certain type
objects = getObjectsWithType(root=NULL, filter=knownTypes[['data sets']])
return(unlist(objects$Name))
}
obj = getObjectFromString(string)
if(!is.null(obj)) {
if(is.list(obj)) {
return(names(obj))
} else if(is.matrix(obj)) {
return(colnames(obj))
} else{
return(NULL)
}
} else {
return(NULL)
}
}
## a function to get objects and their types
## filter is a vector of classes
getObjectsWithType = function(root=NULL, filter = NULL, envir=.GlobalEnv) {
if(is.null(root)) {
objects = ls(envir=envir)
} else {
string = Paste("with(",root,",ls())")
objects = try(rpel(string,envir=envir), silent=TRUE)
}
## objects is character vector of components of root.
badnames = grep("[[<-]|\\*",objects)
if(length(badnames) > 0)
objects = objects[-badnames]
objectsWithRoot = sapply(objects,function(i) makeObjectName(root,i))
type = sapply(objectsWithRoot, function(i) {
string = Paste("str2(",i,")")
rpel(string, envir=envir)
})
objects = data.frame(Name=I(objects),Type=I(type))
## filter
if(!is.null(filter))
objects = objects[type %in% filter,]
return(objects)
}
## Find the name of the object by pasting toghther the pieces
## better to do name$name, but value may be a numeric
makeObjectName = function(root,value) {
if(is.null(root)) return(untaintName(value))
## now decide between $ and [[]]
if(value == make.names(value)) {
return(Paste(root,"$",untaintName(value)))
} else {
return(Paste(root,"[['",value,"']]"))
}
}
######
## send a file to csv mode for editing
"browseDataAsCSV" <-
function(x) {
x = try(as.data.frame(x))
if(inherits(x,"try-error")) {
stop("Can not coerce data into a data frame")
}
tmpfile = paste(tempfile(),".csv",sep="",collapse="")
write.csv(x,file=tmpfile)
browseURL(paste("file://",tmpfile,sep="",collapse=""))
}
## help out with gtree
byReturnVector = function(df, FUN,...) {
tmp = by(df, factor(1:nrow(df)), FUN)
sapply(tmp, function(x) x)
}
hack.as.data.frame = function(items) {
## check rectangular, or coerce to rectangules
if(!(is.data.frame(items) || is.matrix(items) || is.vector(items))) {
warning("Needs rectangular data, either a vector, matrix or data.frame")
return(NA)
}
## coerce to data frame
if(is.vector(items)) {
itemsName = deparse(substitute(items))
items = data.frame(I(items))
names(items) = itemsName
}
if(is.matrix(items)) {
items = hack.as.data.frame.matrix(items) # fun in common.R
}
return(items)
}
## no easy way to not convert character vectors. This is a hack.
hack.as.data.frame.matrix =
function (x, row.names = NULL, optional = FALSE)
{
d <- dim(x)
nrows <- d[1]
ir <- seq(length = nrows)
ncols <- d[2]
ic <- seq(length = ncols)
dn <- dimnames(x)
if (missing(row.names))
row.names <- dn[[1]]
collabs <- dn[[2]]
if (any(empty <- nchar(collabs) == 0))
collabs[empty] <- paste("V", ic, sep = "")[empty]
value <- vector("list", ncols)
if (mode(x) == "character") {
for (i in ic) value[[i]] <- as.character(x[, i])
}
else {
for (i in ic) value[[i]] <- as.vector(x[, i])
}
if (length(row.names) != nrows)
row.names <- if (optional)
character(nrows)
else as.character(ir)
if (length(collabs) == ncols)
names(value) <- collabs
else if (!optional)
names(value) <- paste("V", ic, sep = "")
attr(value, "row.names") <- row.names
class(value) <- "data.frame"
value
}
##################################################
## timestamp function for objects made with pmg
## Modified from R mailing list, value is comment. Need <- to act in
## OO manner comment needs to be a character vector. If a list were
## okay (say serialize()) then this could be different
"Timestamp<-" <- function(obj,value) {
currentStamp = Timestamp(obj)
currentStamp = c(currentStamp, timestamp=as.character(Sys.time()),comment=value)
comment(obj) <- currentStamp
return(obj)
}
Timestamp = function(obj,k=1) {
currentComment= comment(obj)
allStamps =comment(obj)[names(comment(obj)) %in% "timestamp"]
n = length(allStamps)
if(n > 0)
return(allStamps[(max(1,n+1-k)):n])
else
return(NA)
}
#################################################
## functions to deal with icons
## class to icon translation -- return stock name
## with prefix
stockIconFromClass = function(theClass=NULL) {
default = "symbol_star"
if(is.null(theClass) ||
is.na(theClass) ||
length(theClass) == 0
)
return(NA)
if(theClass %in% .models)
return(getstockiconname("lines"))
if(theClass %in% .ts)
return(getstockiconname("ts"))
if(theClass %in% .functions)
return(getstockiconname("function"))
ret = switch(theClass,
"numeric"= "numeric",
"integer"= "numeric",
"logical" = "logical",
"character"="select-font",
"matrix" = "matrix",
"data.frame" = "dataframe",
"list" = "dataframe",
"complex"="numeric",
"factor"="factor",
"recordedplot" = "plot",
NA)
return(getstockiconname(ret))
}
stockIconFromObject = function(obj)
stockIconFromClass(class(obj)[1])
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