# The plot of the Proportional Edge (PE) Proximity Regions (vertices jittered along $y$-coordinate) - multiple interval case Plots the points in and outside of the intervals based on `Yp` points and also the PE proximity regions (i.e., intervals). PE proximity region is constructed with expansion parameter $r \ge 1$ and centrality parameter $c \in (0,1)$. If there are duplicates of `Yp` or `Xp` points, only one point is retained for each duplicate value, and a warning message is printed. For better visualization, a uniform jitter from $U(-Jit,Jit)$ (default is $Jit=.1$) times range of `Xp` and `Yp` and the proximity regions (intervals)) is added to the $y$-direction. `centers` is a logical argument, if `TRUE`, plot includes the centers of the intervals as vertical lines in the plot, else centers of the intervals are not plotted. See also (if(!exists(".Rdpack.currefs")) .Rdpack.currefs \<-new.env();Rdpack::insert_citeOnly(keys="ceyhan:metrika-2012;textual",package="pcds",cached_env=.Rdpack.currefs) ). ```r plotPEregs1D( Xp, Yp, r, c = 0.5, Jit = 0.1, main = NULL, xlab = NULL, ylab = NULL, xlim = NULL, ylim = NULL, centers = FALSE, ... ) ``` ## Arguments - `Xp`: A set of 1D points for which PE proximity regions are plotted. - `Yp`: A set of 1D points which constitute the end points of the intervals which partition the real line. - `r`: A positive real number which serves as the expansion parameter in PE proximity region; must be $\ge 1$. - `c`: A positive real number in $(0,1)$ parameterizing the center inside middle intervals with the default `c=.5`. For the interval, $(a,b)$, the parameterized center is $M_c=a+c(b-a)$. - `Jit`: A positive real number that determines the amount of jitter along the $y$-axis, default=`0.1` and `Xp` points are jittered according to $U(-Jit,Jit)$ distribution along the $y$-axis where `Jit` equals to the range of the union of `Xp` and `Yp` points multiplied by `Jit`). - `main`: An overall title for the plot (default=`NULL`). - `xlab, ylab`: Titles for the $x$ and $y$ axes, respectively (default=`NULL` for both). - `xlim, ylim`: Two `numeric` vectors of length 2, giving the $x$- and $y$-coordinate ranges (default=`NULL` for both). - `centers`: A logical argument, if `TRUE`, plot includes the centers of the intervals as vertical lines in the plot, else centers of the intervals are not plotted (default is `FALSE`). - ``...``: Additional `plot` parameters. ## Returns Plot of the PE proximity regions for 1D points located in the middle or end-intervals based on `Yp` points ## Examples ```r r<-2 c<-.4 a<-0; b<-10; int<-c(a,b); #nx is number of X points (target) and ny is number of Y points (nontarget) nx<-15; ny<-4; #try also nx<-40; ny<-10 or nx<-1000; ny<-10; set.seed(1) xf<-(int[2]-int[1])*.1 Xp<-runif(nx,a-xf,b+xf) Yp<-runif(ny,a,b) plotPEregs1D(Xp,Yp,r,c,xlab="x",ylab="") ``` ## References if(!exists(".Rdpack.currefs")) .Rdpack.currefs \<-new.env();Rdpack::insert_all_ref(.Rdpack.currefs) ## See Also `plotPEregs1D`, `plotCSregs.int`, and `plotCSregs1D` ## Author(s) Elvan Ceyhan

plotPEregs1D function