Nothing
.plt.shapes <-
function(shape, out_shape, lvl=NULL) {
# first call from Plot(), #303, there is no level, just check for bad shapes
# second call there is a level if a by variable
bad.shape <- NULL
shapes.nm <- c("circle", "square", "diamond", "triup", "tridown")
shapes.pnt <- c("+", "*", "#", "%", "!", "=", "-", "&", "$",
"?", "|", ">", "<", "@", ".", "/", ";", ":")
shapes.dgt <- as.character(0:9)
shapes.all <- c(shapes.nm, 0:19, letters, LETTERS, shapes.pnt, shapes.dgt)
if (!is.null(lvl)) {
# shiny does not get here, shape is never missing, from Plot #771
if (unique(lvl) > length(shapes.all)) {
cat("\n")
stop(call.=FALSE, "\n","------\n",
"Only ", length(shapes.all), " unique shapes to display\n",
"You specified a by variable with ", unique(lvl), " levels\n\n")
}
more <- c(8, 7, 9, 10, 12:14, 11, letters, LETTERS, shapes.pnt)
shapes.by <- c("triup", "tridown", "circle", "square", "diamond", more)
shape <- shapes.by[1:lvl]
}
# convert named shape to its numeric code
num.flag <- FALSE
for (i in 1:length(shape)) {
if (!(shape[i] %in% shapes.all)) {
bad.shape <- shape[i]
}
else if (shape[i] %in% shapes.nm) {
shape[i] <- which(shape[i] == shapes.nm) + 20 # still char
num.flag <- TRUE
}
else if (shape[i] %in% LETTERS) {
shape[i] <- which(LETTERS == shape[i]) + 64
num.flag <- TRUE
}
else if (shape[i] %in% letters) {
shape[i] <- which(letters == shape[i]) + 96
num.flag <- TRUE
}
}
if (num.flag) {
shape <- as.numeric(shape)
}
# convert named out_shape to its numeric code
num.flag <- FALSE
if (!(out_shape %in% shapes.all))
bad.shape <- out_shape
else {
if (out_shape %in% shapes.nm) { # outlier point
out_shape <- which(out_shape == shapes.nm) + 20
num.flag <- TRUE
}
}
if (num.flag) out_shape <- as.numeric(out_shape)
if (!is.null(bad.shape)) {
message("\nValid shapes")
message("------------")
for (j in 1:length(shapes.nm)) message(shapes.nm[j])
message("all uppercase and lowercase letters")
message("all digits")
message("+ * # % ! = - & $ ? | < > @")
cat("\n")
stop(call.=FALSE, "\n","------\n",
"Not a valid shape: ", bad.shape, "\n\n")
}
return(list(shape=shape, out_shape=out_shape))
}
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