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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
|
# core addTA base functions
#
# written by Jeffrey A. Ryan
# Copyright 2008
# Distributed under the GPL 3 or later
`funToTA` <-
function(x,drop.arg=1) {
drop.arg <- if(any(drop.arg < 1)) {
1:length(formals(x))
} else -drop.arg
fun.args <- paste(names(formals(x))[drop.arg],'=',sapply(formals(x), deparse)[drop.arg],sep='')
fun.args <- paste(gsub('=$','',fun.args),collapse=',')
paste('add',deparse(substitute(x)),'(',fun.args,') {',collapse='',sep='')
}
shading <- function(x)
{
# to be used from addTA when passed a logical object or vector
# also from new addEvents function
#
# ex. rect(shading$start-spacing, par('usr')[3],
# shading$end-spacing, par('usr')[3])
if( !is.logical(x) )
warning('need logical object')
runs <- rle(as.logical(x))
list(
start=cumsum(runs$lengths)[which(runs$values)] - runs$lengths[which(runs$values)]+1,
end=cumsum(runs$lengths)[which(runs$values)]
)
}
# addTA {{{
`addTA` <-
function(ta, order=NULL, on=NA, legend='auto', yrange=NULL, ...) {
if(is.character(ta)) {
if(exists(ta)) {
plot(do.call(paste('add',ta,sep=''),list(...)))
} else stop(paste('no TA method found for',paste('add',ta,sep='')))
} else {
lchob <- get.current.chob()
chobTA <- new("chobTA")
if(any(is.na(on))) {
chobTA@new <- TRUE
} else {
chobTA@new <- FALSE
chobTA@on <- on
}
nrc <- NROW(lchob@xdata)
ta <- try.xts(ta, error=FALSE)
if(is.xts(ta)) {
x <- merge(lchob@xdata, ta, fill=ifelse(is.logical(ta),0,NA),join='left', retside=c(FALSE,TRUE))
} else {
if(NROW(ta) != nrc)
stop('non-xtsible data must match the length of the underlying series')
x <- merge(lchob@xdata, ta, join='left', retside=c(FALSE,TRUE))
}
if(is.logical(ta))
x <- as.logical(x, drop=FALSE) #identical to storage.mode(x)<-"logical"
chobTA@TA.values <- coredata(x)[lchob@xsubset,]
chobTA@name <- "chartTA"
chobTA@call <- match.call()
chobTA@params <- list(xrange=lchob@xrange,
yrange=yrange,
colors=lchob@colors,
spacing=lchob@spacing,
width=lchob@width,
bp=lchob@bp,
isLogical=is.logical(ta),
x.labels=lchob@x.labels,
order=order,legend=legend,
pars=list(list(...)),
time.scale=lchob@time.scale)
# if(is.null(sys.call(-1))) {
# TA <- lchob@passed.args$TA
# lchob@passed.args$TA <- c(TA,chobTA)
# lchob@windows <- lchob@windows + ifelse(chobTA@new,1,0)
# do.call('chartSeries.chob',list(lchob))
# #quantmod:::chartSeries.chob(lchob)
# invisible(chobTA)
# } else {
return(chobTA)
# }
}
}#}}}
# chartTA {{{
`chartTA` <-
function(x) {
spacing <- x@params$spacing
width <- x@params$width
x.range <- x@params$xrange
x.range <- seq(x.range[1],x.range[2]*spacing)
tav <- x@TA.values
if(x@new) {
# draw new sub-window
y.range <- if(is.null(x@params$yrange) || length(x@params$yrange) != 2) {
seq(min(tav * 0.975, na.rm = TRUE), max(tav * 1.05, na.rm = TRUE),
length.out=length(x.range))
} else seq(x@params$yrange[1],x@params$yrange[2],length.out=length(x.range))
plot(x.range,y.range,type='n',axes=FALSE,ann=FALSE)
coords <- par('usr')
rect(coords[1],coords[3],coords[2],coords[4],col=x@params$colors$area)
grid(NA,NULL,col=x@params$colors$grid.col)
}
pars <- x@params$pars[[1]]
pars <- lapply(pars,
function(x) {
len <- NCOL(tav)
if(length(x) < len) {
rep(list(x), length.out=len)
} else rep(list(x),length.out=len)
})
# pars <- x@params$pars#[[1]]
# pars <- lapply(pars, function(x) rep(x, length.out=NCOL(tav)))
col.order <- if(is.null(x@params$order)) {
1:NCOL(tav)
} else x@params$order
if(is.null(x@params$legend)) legend <- function(legend,text.col,...) {}
if(is.character(x@params$legend) && x@params$legend != "auto") {
legend("topleft", legend=x@params$legend, bty='n', y.intersp=0.95)
legend <- function(legend,text.col,...) { }
}
if(!x@new) {
legend <- function(legend,text.col,...) { list(legend=legend,text.col=text.col) }
}
#formals(legend) <- alist(legend=,text.col=,...=) #formals(graphics::legend) # all have the same formals now
legend.text <- list()
# possibly able to handle newTA functionality
if(is.null(x@params$legend.name)) x@params$legend.name <- deparse(x@call[-1][[1]])
x.pos <- 1 + spacing * (1:length(x.range))
if(NCOL(tav) == 1) {
tmp.pars <- lapply(pars,function(x) x[[1]][[1]])
if(x@params$isLogical) {
do.call('rect',c(list(x.pos[shading(tav)$start-1] - spacing/3), list(par('usr')[3]),
list(x.pos[shading(tav)$end-1] + spacing/3), list(par('usr')[4]), tmp.pars))
# do not add a legend name for background shading. probably better to have
# the labels in another routine
} else {
do.call('lines',c(list(seq(1,length(x.range),by=spacing)), list(tav), tmp.pars))
legend.text[[1]] <- legend('topleft',
legend=c(paste(x@params$legend.name,":"),sprintf("%.3f",last(na.omit(tav)))),
text.col=c(x@params$colors$fg.col,last(pars$col[[1]])),bty='n',y.intersp=0.95)
}
} else {
for(cols in col.order) {
tmp.pars <- lapply(pars,function(x) {
p <- try(x[[cols]][[cols]],silent=TRUE)
if(inherits(p, 'try-error')) {
stop("TA parameter length must equal number of columns", call.=FALSE)
} else p
}
)
do.call('lines',c(list(seq(1,length(x.range),by=spacing)), list(tav[,cols]), tmp.pars))
if(cols==1) {
legend.text[[cols]] <- legend('topleft',
legend=c(paste(x@params$legend.name,":")),
text.col=c(x@params$colors$fg.col,last(pars$col[[cols]])),bty='n',y.intersp=0.95)
}
# for each column, add colname: value
Col.title <- colnames(tav)[cols]
legend.text[[cols]] <- legend('topleft',
legend=c(rep('',cols),paste(Col.title,":",
sprintf("%.3f",last(na.omit(tav[,cols]))))),
text.col=pars$col[[cols]][cols],bty='n',y.intersp=0.95)
}
}
axis(2)
box(col=x@params$colors$fg.col)
invisible(legend.text)
} # }}}
# chartSetUp {{{
`chartSetUp` <-
function(x) {
spacing <- x@params$spacing
width <- x@params$width
x.range <- x@params$xrange
x.range <- seq(x.range[1],x.range[2]*spacing)
tav <- x@TA.values
if(x@new) {
y.range <- if(is.null(x@params$yrange) || length(x@params$yrange) != 2) {
seq(min(tav * 0.975, na.rm = TRUE), max(tav * 1.05, na.rm = TRUE),
length.out=length(x.range))
} else seq(x@params$yrange[1],x@params$yrange[2],length.out=length(x.range))
plot(x.range,y.range,type='n',axes=FALSE,ann=FALSE)
coords <- par('usr')
rect(coords[1],coords[3],coords[2],coords[4],col=x@params$colors$area)
grid(NA,NULL,col=x@params$colors$grid.col)
}
pars <- x@params$pars[[1]]
pars <- lapply(pars,
function(x) {
len <- NCOL(tav)
if(length(x) < len) {
rep(list(x), length.out=len)
} else rep(list(x),length.out=len)
})
# pars <- x@params$pars#[[1]]
# pars <- lapply(pars, function(x) rep(x, length.out=NCOL(tav)))
col.order <- if(is.null(x@params$order)) {
1:NCOL(tav)
} else x@params$order
if(is.null(x@params$legend)) legend <- function(legend,text.col,...) {}
if(is.character(x@params$legend) && x@params$legend != "auto") {
legend("topleft", legend=x@params$legend, bty='n', y.intersp=0.95)
legend <- function(legend,text.col,...) { }
}
if(!x@new) {
legend <- function(legend,text.col,...) { list(legend=legend,text.col=text.col) }
}
legend.text <- list()
# possibly able to handle newTA functionality
if(is.null(x@params$legend.name)) x@params$legend.name <- deparse(x@call[-1][[1]])
if(NCOL(tav) == 1) {
tmp.pars <- lapply(pars,function(x) x[[1]][[1]])
# if(x@params$isLogical) {
# do.call('rect',c(list(shading(tav)$start*spacing), list(par('usr')[3]),
# list(shading(tav)$end*spacing), list(par('usr')[4]), tmp.pars))
# } else
# do.call('lines',c(list(seq(1,length(x.range),by=spacing)), list(tav), tmp.pars))
legend.text[[1]] <- legend('topleft',
legend=c(paste(x@params$legend.name,":"),sprintf("%.3f",last(na.omit(tav)))),
text.col=c(x@params$colors$fg.col,last(pars$col[[1]])),bty='n',y.intersp=0.95)
} else {
for(cols in col.order) {
tmp.pars <- lapply(pars,function(x) x[[cols]][[cols]])
# do.call('lines',c(list(seq(1,length(x.range),by=spacing)), list(tav[,cols]), tmp.pars))
if(cols==1) {
legend.text[[cols]] <- legend('topleft',
legend=c(paste(x@params$legend.name,":")),
text.col=c(x@params$colors$fg.col,last(pars$col[[cols]])),bty='n',y.intersp=0.95)
}
# for each column, add colname: value
Col.title <- colnames(tav)[cols]
legend.text[[cols]] <- legend('topleft',
legend=c(rep('',cols),paste(Col.title,":",
sprintf("%.3f",last(na.omit(tav[,cols]))))),
text.col=pars$col[[cols]][cols],bty='n',y.intersp=0.95)
}
}
axis(2)
box(col=x@params$colors$fg.col)
invisible(legend.text)
} # }}}
# setTA {{{
`setTA` <-
function(type=c('chartSeries','barChart','candleChart')) {
if('chartSeries' %in% type) setDefaults(chartSeries,TA=listTA())
if('barChart' %in% type) setDefaults(barChart,TA=listTA())
if('candleChart' %in% type) setDefaults(candleChart,TA=listTA())
}# }}}
# unsetTA {{{
`unsetTA` <-
function(type=c('chartSeries','barChart','candleChart')) {
if('chartSeries' %in% type) setDefaults(chartSeries,TA=NULL)
if('barChart' %in% type) setDefaults(barChart,TA=NULL)
if('candleChart' %in% type) setDefaults(candleChart,TA=NULL)
}# }}}
# listTA {{{
`listTA` <-
function(dev) {
if(missing(dev)) dev <- dev.cur()
sapply(get.chob()[[dev]]@passed.args$TA,function(x) x@call)
} # }}}
chartNULL <- function(...) return(invisible(NULL))
|
