panel.superpose.dl: panel superpose dl

In tdhock/directlabels: Direct Labels for Multicolor Plots

panel superpose dl

Description

Call panel.superpose for the data points and then for the direct labels. This is a proper lattice panel function that behaves much like panel.superpose.

Usage

panel.superpose.dl(x, 
    y = NULL, subscripts, 
    groups, panel.groups, 
    method = NULL, .panel.superpose = lattice::panel.superpose, 
    type = "p", debug = FALSE, 
    ...)

Arguments

x	Vector of x values.
y	Vector of y values.
subscripts	Subscripts of x,y,groups.
groups	Vector of group ids.
panel.groups	To be parsed for default labeling method, and passed to panel.superpose.
method	Positioning Method for direct labeling. NULL indicates to choose a Positioning Method based on the panel.groups function.
.panel.superpose	The panel function to use for drawing data points.
type	Plot type, used for default method dispatch.
debug	passed to dlgrob.
...	passed to real panel function, and to translator.

Author(s)

Toby Dylan Hocking

Examples

loci <- data.frame(
  ppp=c(rbeta(800,10,10),rbeta(100,0.15,1),rbeta(100,1,0.15)),
  type=factor(c(rep("NEU",800),rep("POS",100),rep("BAL",100))))
## 3 equivalent ways to make the same plot:
if(require(lattice)){
  print(direct.label( ## most user-friendly
    densityplot(~ppp,loci,groups=type,n=500)
  ))
  print(direct.label( ## exactly the same as above but with specific panel fns
    densityplot(
      ~ppp,loci,groups=type,n=500,
      panel=lattice::panel.superpose,
      panel.groups="panel.densityplot")
  ))
  ## using panel.superpose.dl as the panel function automatically adds
  ## direct labels
  print(densityplot(
    ~ppp,loci,groups=type,n=500,
    panel=panel.superpose.dl,panel.groups="panel.densityplot"
  ))
  ## Exploring custom panel and panel.groups functions
  if(require(nlme)){
    ## Say we want to use a simple linear model to explain rat body weight:
    fit <- lm(weight~Time+Diet+Rat,BodyWeight)
    bw <- BodyWeight
    bw$.fitted <- predict(fit,BodyWeight)
    ## lots of examples to come, all with these arguments:
    ratxy <- function(...){
      xyplot(weight~Time|Diet,bw,groups=Rat,type="l",layout=c(3,1),...)
    }
    ## No custom panel functions:
    ##regular <- ratxy(par.settings=simpleTheme(col=c("red","black")))
    regular <- ratxy()
    print(regular) ## normal lattice plot
    print(direct.label(regular)) ## with direct labels
    ## The direct label panel function panel.superpose.dl can be used to
    ## display direct labels as well:
    print(ratxy(panel=panel.superpose.dl,panel.groups="panel.xyplot"))
    print(ratxy(panel=function(...)
      panel.superpose.dl(panel.groups="panel.xyplot",...)))
    ## Not very user-friendly, since default label placement is
    ## impossible, but these should work:
    print(ratxy(
      panel=panel.superpose.dl,panel.groups=panel.xyplot,
      method=first.points))
    print(ratxy(panel=function(...)
      panel.superpose.dl(panel.groups=panel.xyplot,...),
      method=first.points))
    ## Custom panel.groups functions:
    ## This panel.groups function will display the model fits:
    panel.model <- function(x,subscripts,col.line,...){
      panel.xyplot(x=x,subscripts=subscripts,col.line=col.line,...)
      llines(x,bw[subscripts,".fitted"],col=col.line,lty=2)
    }
    pg <- ratxy(panel=lattice::panel.superpose,panel.groups=panel.model)
    print(pg)
    ## If you use panel.superpose.dl with a custom panel.groups function,
    ## you need to manually specify the Positioning Method, since the
    ## name of panel.groups is used to infer a default:
    print(direct.label(pg,method="first.qp"))
    print(ratxy(
      panel=panel.superpose.dl,panel.groups="panel.model",
      method="first.qp"))
    ## Custom panel function that draws a box around values:
    panel.line1 <- function(ps=lattice::panel.superpose){
      function(y,...){
        panel.abline(h=range(y))
        ps(y=y,...)
      }
    }
    custom <- ratxy(panel=panel.line1())
    print(custom)
    print(direct.label(custom))
    ## Alternate method, producing the same results, but using
    ## panel.superpose.dl in the panel function. This is useful for direct
    ## label plots where you use several datasets.
    print(ratxy(panel=panel.line1(panel.superpose.dl),panel.groups="panel.xyplot"))
    ## Lattice plot with custom panel and panel.groups functions:
    both <- ratxy(panel=panel.line1(),panel.groups="panel.model")
    print(both)
    print(direct.label(both,method="first.qp"))
    print(ratxy(panel=panel.line1(panel.superpose.dl),
                panel.groups=panel.model,method="first.qp"))
  }
}

tdhock/directlabels documentation built on April 21, 2024, 11:32 a.m.