File: radial.plot.R

package info (click to toggle)
r-cran-plotrix 3.2-6-1
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 1,136 kB
  • sloc: makefile: 3
file content (224 lines) | stat: -rwxr-xr-x 8,067 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
# plots data as radial lines or a polygon on a 24 hour "clockface" going 
# clockwise. clock.pos should be in decimal hours between 0 and 24.
# Remember to convert hour/minute values to hour/decimal values.
# example: clock24.plot(rnorm(16)+3,seq(5.5,20.5))

clock24.plot<-function(lengths,clock.pos,labels=NULL,label.pos=NULL,
 rp.type="r",...) {
 
 npos<-length(lengths)
 # if no positions are given, spread the lines out over the circle 
 if(missing(clock.pos)) clock.pos<-seq(0,24-24/(npos+1),length=npos)
 # start at "midnight" and go clockwise
 radial.pos<-pi*(450-clock.pos*15)/180
 if(is.null(labels))
  labels<-paste(0:23,"00",sep="")
 if(is.null(label.pos))
  label.pos<-seq(5*pi/2,7*pi/12,by=-pi/12)
 else label.pos<-pi*(450-clock.pos*15)/180
 invisible(radial.plot(lengths,radial.pos,labels=labels,label.pos=label.pos,
  rp.type=rp.type,...))
}

# plots data as radial lines or a polygon starting at the right and going
# counterclockwise.
# angles should be given in 0-360 values, use radial.plot for radians
# example: polar.plot(rnorm(20)+3,seq(90,280,by=10))

polar.plot<-function(lengths,polar.pos=NULL,labels,label.pos=NULL,
 start=0,clockwise=FALSE,rp.type="r",...) {
 
 npos<-length(lengths)
 # if no positions are given, add the average distance between positions so that
 # the first and last line don't overlap
 if(is.null(polar.pos)) radial.pos<-seq(0,(2-2/(npos+1))*pi,length=npos)
 else radial.pos<-pi*polar.pos/180
 if(start) start<-pi*start/180
 if(is.null(label.pos)) label.pos<-seq(0,1.89*pi,length=18)
 else label.pos<-pi*label.pos/180
 if(missing(labels)) labels<-as.character(seq(0,340,by=20))
 invisible(radial.plot(lengths,radial.pos,labels,label.pos,start=start,
  clockwise=clockwise,rp.type=rp.type,...))
}

# plots radial lines of length 'lengths', symbols at 'lengths' from the
# center or a polygon with corresponding vertices at 'radial.pos' in radians.
# starts at the 'east' position and goes counterclockwise unless
# the "start" and "clockwise" arguments are changed
# label.prop is the proportion of max(lengths) that gives the
# radial position of the labels

radial.plot<-function(lengths,radial.pos=NULL,labels=NA,label.pos=NULL,radlab=FALSE,
 start=0,clockwise=FALSE,rp.type="r",label.prop=1.15,main="",xlab="",ylab="",
 line.col=par("fg"),lty=par("lty"),lwd=par("lwd"),mar=c(2,2,3,2),
 show.grid=TRUE,show.grid.labels=4,show.radial.grid=TRUE,
 grid.col="gray",grid.bg="transparent",grid.left=FALSE,grid.unit=NULL,
 point.symbols=NULL,point.col=NULL,show.centroid=FALSE,radial.lim=NULL,
 radial.labels=NULL,boxed.radial=TRUE,poly.col=NULL,add=FALSE,...) {
 
 if(is.null(radial.lim)) radial.lim<-range(lengths)
 length.dim<-dim(lengths)
 if(is.null(length.dim)) {
  npoints<-length(lengths)
  nsets<-1
  lengths<-matrix(lengths,nrow=1)
 }
 else {
  npoints<-length.dim[2]
  nsets<-length.dim[1]
  lengths<-as.matrix(lengths)
 }
 lengths<-lengths-radial.lim[1]
 lengths[lengths<0]<-NA
 if(is.null(radial.pos[1]))
  radial.pos<-seq(0,pi*(2-2/npoints),length.out=npoints)
 radial.pos.dim<-dim(radial.pos)
 if(is.null(radial.pos.dim))
  radial.pos<-matrix(rep(radial.pos,nsets),nrow=nsets,byrow=TRUE)
 else radial.pos<-as.matrix(radial.pos)
 if(clockwise) radial.pos<--radial.pos
 if(start) radial.pos<-radial.pos+start
 if(show.grid) {
  if(length(radial.lim) < 3) grid.pos<-pretty(radial.lim)
  else grid.pos<-radial.lim
  if(grid.pos[1] < radial.lim[1]) grid.pos<-grid.pos[-1]
  maxlength<-max(grid.pos-radial.lim[1])
  angles<-seq(0,1.96*pi,by=0.04*pi)
 }
 else {
  grid.pos<-NA
  maxlength<-diff(radial.lim)
 }
 oldpar<-par("xpd","mar","pty")
 if(!add) {
  par(mar=mar,pty="s")
  plot(c(-maxlength,maxlength),c(-maxlength,maxlength),type="n",axes=FALSE,
   main=main,xlab=xlab,ylab=ylab)
  if(show.grid) {
   for(i in seq(length(grid.pos),1,by=-1)) {
    xpos<-cos(angles)*(grid.pos[i]-radial.lim[1])
    ypos<-sin(angles)*(grid.pos[i]-radial.lim[1])
    polygon(xpos,ypos,border=grid.col,col=grid.bg)
   }
  }
 }
 par(xpd=TRUE)
 # stretch everything out to the correct length
 if(length(line.col) < nsets) line.col<-1:nsets
 if(length(rp.type) < nsets) rp.type<-rep(rp.type,length.out=nsets)
 if(length(point.symbols) < nsets)
  point.symbols<-rep(point.symbols,length.out=nsets)
 if(length(point.col) < nsets) point.col<-rep(point.col,length.out=nsets)
 if(length(poly.col) < nsets) poly.col<-rep(poly.col,length.out=nsets)
 if(length(lty) < nsets) lty<-rep(lty,length.out=nsets)
 if(length(lwd) < nsets) lwd<-rep(lwd,length.out=nsets)
 for(i in 1:nsets) {
  if(nsets > 1) {
   linecol<-line.col[i]
   polycol<-poly.col[i]
   pointcol<-point.col[i]
   pointsymbols<-point.symbols[i]
   ltype<-lty[i]
   lwidth<-lwd[i]
  }
  else {
   linecol<-line.col
   polycol<-poly.col
   pointcol<-point.col
   pointsymbols<-point.symbols
   ltype<-lty
   lwidth<-lwd
  }
  # split up rp.type if there is a combination of displays
  rptype<-unlist(strsplit(rp.type[i],""))
  if(match("s",rptype,0)) {
   if(is.null(pointsymbols)) pointsymbols<-i
   if(is.null(pointcol)) pointcol<-i
  }
  # get the vector of x positions
  xpos<-cos(radial.pos[i,])*lengths[i,]
  # get the vector of y positions
  ypos<-sin(radial.pos[i,])*lengths[i,]
  # plot radial lines if rp.type == "r"    
  if(match("r",rptype,0))
   segments(0,0,xpos,ypos,col=linecol,lty=ltype,lwd=lwidth,...)
  if(match("p",rptype,0))
   polygon(xpos,ypos,border=linecol,col=polycol,lty=ltype,
    lwd=lwidth,...)
  if(match("s",rptype,0))
   points(xpos,ypos,pch=pointsymbols,col=pointcol,...)
  if(show.centroid)
   if(match("p",rptype,0)) {
    nvertices<-length(xpos)
    # first get the "last to first" area component
    polygonarea<-xpos[nvertices]*ypos[1] - xpos[1]*ypos[nvertices]
    for(vertex in 1:(nvertices-1))
     polygonarea<-
      polygonarea+xpos[vertex]*ypos[vertex+1]-xpos[vertex+1]*ypos[vertex]
    polygonarea<-polygonarea/2
    centroidx<-
     (xpos[nvertices]+xpos[1])*(xpos[nvertices]*ypos[1]-xpos[1]*ypos[nvertices])
    centroidy<-
     (ypos[nvertices]+ypos[1])*(xpos[nvertices]*ypos[1]-xpos[1]*ypos[nvertices])
    for(vertex in 1:(nvertices-1)) {
     centroidx<-centroidx + (xpos[vertex]+xpos[vertex+1])*
      (xpos[vertex]*ypos[vertex+1]-xpos[vertex+1]*ypos[vertex])
     centroidy<-centroidy + (ypos[vertex]+ypos[vertex+1])*
      (xpos[vertex]*ypos[vertex+1]-xpos[vertex+1]*ypos[vertex])
    }
    points(centroidx/(6*polygonarea),centroidy/(6*polygonarea),
     col=point.col[i],pch=point.symbols[i],cex=2,...)
   
   }
   else
    points(mean(xpos),mean(ypos),col=pointcol,pch=pointsymbols,
     cex=2,...)
 }
 if(!add) {
  if(is.na(labels[1])) {
   label.pos<-seq(0,1.8*pi,length=9)
   labels<-as.character(round(label.pos,2))
  }
  if(is.null(label.pos[1])) {
   lablen<-length(labels)
   label.pos<-seq(0,pi*(2-2/lablen),length.out=lablen)
  }
  if(clockwise) label.pos<--label.pos
  if(start) label.pos<-label.pos+start
  xpos<-cos(label.pos)*maxlength
  ypos<-sin(label.pos)*maxlength
  if(show.radial.grid) segments(0,0,xpos,ypos,col=grid.col)
  xpos<-cos(label.pos)*maxlength*label.prop
  ypos<-sin(label.pos)*maxlength*label.prop
  if(radlab) {
   for(label in 1:length(labels)) {
    labelsrt<-(180*label.pos[label]/pi)+
     180*(label.pos[label] > pi/2 && label.pos[label] < 3*pi/2)
    text(xpos[label],ypos[label],labels[label],cex=par("cex.axis"),srt=labelsrt)
   }
  }
  else
   boxed.labels(xpos,ypos,labels,ypad=0.7,border=FALSE,cex=par("cex.axis"))
  if(show.grid.labels) {
   if(show.grid.labels%%2) {
    ypos<-grid.pos-radial.lim[1]
    xpos<-rep(0,length(grid.pos))
    if(show.grid.labels==1) ypos<--ypos
   }
   else {
    xpos<-grid.pos-radial.lim[1]
    ypos<-rep(0,length(grid.pos))
    if(show.grid.labels==2) xpos<--xpos
   }
   if(is.null(radial.labels)) radial.labels=as.character(grid.pos)
   if(!is.null(grid.unit))
    radial.labels[length(grid.pos)]<-
     paste(radial.labels[length(grid.pos)],grid.unit)
   if(boxed.radial)
    boxed.labels(xpos,ypos,radial.labels,border=FALSE,
     cex=par("cex.lab"))
   else text(xpos,ypos,radial.labels,cex=par("cex.lab"))
  }
 }
 invisible(oldpar)
}