Nothing
see.exppower.tck<-function ()
{
if (!exists("slider.env"))
slider.env <- NULL; suppressWarnings(rm(slider.env)); slider.env <<- new.env()# Dummy to trick R CMD check
m <- 1
assign("m", tclVar(m), envir = slider.env)
xmin <- -3
assign("xmin", tclVar(xmin), envir = slider.env)
xmax <- 3
assign("xmax", tclVar(xmax), envir = slider.env)
exppower<-function(x,m){exp(-abs(x)^m)}
norm.refresh <- function(...) {
m <- as.numeric(evalq(tclvalue(m), envir = slider.env))
xmin <- as.numeric(evalq(tclvalue(xmin), envir = slider.env))
xmax <- as.numeric(evalq(tclvalue(xmax), envir = slider.env))
xx <- seq(xmin, xmax, length = 200)
yy <- exppower(as.numeric(xx), m)
dev.hold()
plot(xx, yy, type = "l", xlim = c(xmin, xmax),xlab=expression(italic(x)),ylab=expression(paste(italic(f),"(",italic(x),")", sep = "")))
dev.flush()
}
tclServiceMode(TRUE)
m <- tktoplevel()
tkwm.title(m, "Visualizing Exponential Power Distributions")
tkwm.geometry(m, "+0+0")
tkpack(tklabel(m,text=" Visualizing Exponential Power Distributions "))
tkpack(fr <- tkframe(m), side = "top")
tkpack(tklabel(fr, text = "f(x) =", font=c("Helvetica","9","italic")), side = "left")
tkpack(tklabel(fr, text = "exp(", font=c("Helvetica","9","normal")),side="left")
tkpack(tklabel(fr, text ='-|x| \u036b', font=c("Helvetica","9","italic")), side = "left", anchor ="w")
tkpack(tklabel(fr, text = " ) ", font=c("Helvetica","9","normal")),side="left", anchor ="w")
tkpack(tklabel(m,text=""), side = "top")
tkpack(fr1 <- tkframe(m), side = "top")
tkpack(tklabel(fr1, text = "m ", font=c("Helvetica","10","italic")),side="left", anchor = "s")
tkpack(sc <- tkscale(fr1, command = norm.refresh, from = -10,
to = 10, orient = "horiz", resolution = .1, showvalue = TRUE),
side = "left", anchor="n")
assign("sc", sc, envir = slider.env)
evalq(tkconfigure(sc, variable = m), envir = slider.env)
tkpack(tklabel(m,text=""), side = "top")
tkpack(fr <- tkframe(m), side = "top")
tkpack(tklabel(fr, text = "Xmin:", width = 6), side = "left")
tkpack(e <- tkentry(fr, width = 8), side = "left")
assign("e", e, envir = slider.env)
evalq(tkconfigure(e, textvariable = xmin), envir = slider.env)
tkpack(tklabel(fr, text = "Xmax:", width = 6), side = "left")
tkpack(e <- tkentry(fr, width = 8), side = "left")
assign("e", e, envir = slider.env)
evalq(tkconfigure(e, textvariable = xmax), envir = slider.env)
tkpack(tklabel(m,text=""), side = "top")
tkpack(tkbutton(m, text = "Refresh", command = norm.refresh),
side = "left")
tkpack(tkbutton(m, text = "Exit", command = function() tkdestroy(m)),
side = "right")
}
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