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> ### > 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("clines-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('clines') > > assign(".oldSearch", search(), env = .CheckExEnv) > assign(".oldNS", loadedNamespaces(), env = .CheckExEnv) > cleanEx(); ..nameEx <- "clines" > > ### * clines > > flush(stderr()); flush(stdout()) > > ### Name: clines > ### Title: Calculate Contour Lines > ### Aliases: clines > ### Keywords: dplot > > ### ** Examples > > # Mount Maungawhau > data("volcano") > rx <- range(x <- 10*1:nrow(volcano)) > ry <- range(y <- 10*1:ncol(volcano)) > ry <- ry + c(-1,1) * (diff(rx) - diff(ry))/2 > tcol <- terrain.colors(12) > plot(x = 0, y = 0,type = "n", xlim = rx, ylim = ry, xlab = "", ylab = "") > u <- par("usr") > rect(u[1], u[3], u[2], u[4], col = tcol[8], border = "red") > > line.list <- clines(x, y, volcano) Warning in clines(x, y, volcano) : The clines package is no longer required. You should use the function contourLines() in the graphics package instead. > > contour(x, y, volcano, col = tcol[2], lty = "solid", add = TRUE, + vfont = c("sans serif", "plain")) > > templines <- function(clines) { + lines(clines[[2]], clines[[3]]) + } > invisible(lapply(line.list, templines)) > > > > graphics::par(get("par.postscript", env = .CheckExEnv)) > ### *