Nothing
see.accPrec.tck <- function(){
# old.par <- par(no.readonly = TRUE)
if (!exists("slider.env"))
slider.env <- NULL
suppressWarnings(rm(slider.env))
slider.env <<- new.env()
accuracy <- 0.5
assign("accuracy", tclVar(accuracy), envir = slider.env)
precision <- 0.5
assign("precision", tclVar(precision), envir = slider.env)
angle <- 180
assign("angle", tclVar(angle), envir = slider.env)
dev.new(height = 4, width = 4)
par(mar=c(0,0,0,0))
norm.refresh <- function(...){
dev.hold()
accuracy <- as.numeric(evalq(tclvalue(accuracy), envir = slider.env))
precision <- as.numeric(evalq(tclvalue(precision), envir = slider.env))
angle <- as.numeric(evalq(tclvalue(angle), envir = slider.env))
plot(-1:1, -1:1, type = "n", xlab= "", ylab = "", yaxt = "n", xaxt = "n")
draw.circle(rep(0, 5), rep(0, 5), c(1, .8, .6, .4, .2), col = c("grey", "white", "grey", "white", "grey"))
rad <- angle * pi/180
xc <- sin(rad) * accuracy
yc <- cos(rad) * accuracy
x <- rnorm(10, sd = .25 * precision) + xc
y <- rnorm(10, sd = .25 * precision) + yc
points(x, y, pch = 19)
dev.flush()
}
m <- tktoplevel()
tkwm.title(m, "")
tkpack(tklabel(m, text = " Accuracy and Precision "))
tkwm.geometry(m, "+0+0")
tkpack(fr <- tkframe(m), side = "top")
tkpack(tklabel(fr, text = "Accuracy (low to high)", width = "20"), side = "right")
tkpack(sc <- tkscale(fr, command = norm.refresh, from = 1,
to = 0, orient = "horiz", resolution = 0.1, showvalue = FALSE),
side = "left")
assign("sc", sc, envir = slider.env)
evalq(tkconfigure(sc, variable = accuracy), envir = slider.env)
tkpack(fr <- tkframe(m), side = "top")
tkpack(tklabel(fr, text = "Precision (low to high)", width = "20"), side = "right")
tkpack(sc <- tkscale(fr, command = norm.refresh, from = 1,
to = 0, orient = "horiz", resolution = 0.1, showvalue = FALSE),
side = "left")
assign("sc", sc, envir = slider.env)
evalq(tkconfigure(sc, variable = precision), envir = slider.env)
tkpack(fr <- tkframe(m), side = "top")
tkpack(tklabel(fr, text = "Angle", width = 6), side = "left")
tkpack(e <- tkentry(fr, width = 8), side = "left")
assign("e", e, envir = slider.env)
evalq(tkconfigure(e, textvariable = angle), envir = slider.env)
tkpack(tkbutton(m, text = "Refresh", command = norm.refresh),
side = "left")
tkpack(tkbutton(m, text = "Exit", command = function() tkdestroy(m)),
side = "right")
# on.exit(par(old.par))
}
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