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Refactor addChAD/addChVol to follow skeleton_TA #98

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Refactor addChAD/addChVol to follow skeleton_TA #98

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184 changes: 116 additions & 68 deletions R/addChaikin.R
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Original file line number Diff line number Diff line change
Expand Up @@ -9,87 +9,135 @@
`addChAD` <-
function (..., on = NA, legend = "auto")
{
lchob <- get.current.chob()
x <- as.matrix(lchob@xdata)
x <- chaikinAD(HLC = HLC(x), volume = Vo(x))
yrange <- NULL
chobTA <- new("chobTA")
if (NCOL(x) == 1) {
chobTA@TA.values <- x[lchob@xsubset]
}
else chobTA@TA.values <- x[lchob@xsubset, ]
chobTA@name <- "chartTA"
if (any(is.na(on))) {
chobTA@new <- TRUE
lenv <- new.env()
lenv$chartChAD <- function(x, ..., on, legend) {
xdata <- x$Env$xdata
xsubset <- x$Env$xsubset
vo <- x$Env$vo
ChaikinAD <- chaikinAD(HLC = HLC(xdata), volume = vo)[xsubset]
spacing <- x$Env$theme$spacing
x.pos <- 1 + spacing * (1:NROW(ChaikinAD) - 1)
xlim <- x$Env$xlim
ylim <- range(ChaikinAD,na.rm=TRUE)
theme <- x$Env$theme

lines(x.pos, ChaikinAD, col = theme$chaikin$col$chaikinad,
lwd = 1, lend = 2, ...)
}
else {
chobTA@new <- FALSE
chobTA@on <- on
if(!is.character(legend) || legend == "auto")
legend <- gsub("^addChAD", "Chaikin Acc/Dist", deparse(match.call()))
mapply(function(name, value) {
assign(name, value, envir = lenv)
}, names(list(..., on = on, legend = legend)),
list(..., on = on, legend = legend))
exp <- parse(text = gsub("list", "chartChAD", as.expression(substitute(list(x = current.chob(),
..., on = on, legend = legend)))), srcfile = NULL)
exp <- c(exp, expression(
lc <- xts:::legend.coords("topleft", xlim, range(ChaikinAD,na.rm=TRUE)),
legend(x = lc$x, y = lc$y,
legend = c(paste(legend, ":"),
paste(format(last(ChaikinAD),nsmall = 3L))),
text.col = c(theme$fg, theme$chaikin$col$chaikinad),
xjust = lc$xjust,
yjust = lc$yjust,
bty = "n",
y.intersp=0.95)))
exp <- c(expression(
# add inbox color
rect(xlim[1], range(ChaikinAD, na.rm=TRUE)[1], xlim[2], range(ChaikinAD, na.rm=TRUE)[2], col=theme$fill),
# add grid lines and left-side axis labels
segments(xlim[1], y_grid_lines(range(ChaikinAD, na.rm=TRUE)),
xlim[2], y_grid_lines(range(ChaikinAD, na.rm=TRUE)),
col = theme$grid, lwd = x$Env$grid.ticks.lwd, lty = 3),
text(xlim[1], y_grid_lines(range(ChaikinAD, na.rm=TRUE)), y_grid_lines(range(ChaikinAD, na.rm=TRUE)),
col = theme$labels, srt = theme$srt,
offset = 0.5, pos = 2, cex = theme$cex.axis, xpd = TRUE),
# add border of plotting area
rect(xlim[1], range(ChaikinAD, na.rm=TRUE)[1], xlim[2], range(ChaikinAD, na.rm=TRUE)[2], border=theme$labels)), exp)

lchob <- current.chob()
if (is.null(lchob$Env$theme$chaikin$col$chaikinad)) {
lchob$Env$theme$chaikin$col$chaikinad <- 3
}
chobTA@call <- match.call()
legend.name <- gsub("^.*[(]", " Chaikin Acc/Dist (", deparse(match.call()))
#extended = TRUE)
gpars <- c(list(...), list(col = 11))[unique(names(c(list(col = 11),
list(...))))]
chobTA@params <- list(xrange = lchob@xrange, yrange = yrange,
colors = lchob@colors, color.vol = lchob@color.vol, multi.col = lchob@multi.col,
spacing = lchob@spacing, width = lchob@width, bp = lchob@bp,
x.labels = lchob@x.labels, time.scale = lchob@time.scale,
isLogical = is.logical(x), legend = legend, legend.name = legend.name,
pars = list(gpars))
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))
invisible(chobTA)
xdata <- lchob$Env$xdata
xsubset <- lchob$Env$xsubset
vo <- lchob$Env$vo
ChaikinAD <- chaikinAD(HLC = HLC(xdata), volume = vo)[xsubset]
lchob$Env$ChaikinAD <- ChaikinAD
if(is.na(on)) {
lchob$add_frame(ylim=range(ChaikinAD,na.rm=TRUE),asp=1,fixed=TRUE)
lchob$next_frame()
}
else {
return(chobTA)
lchob$set_frame(sign(on)*(abs(on)+1L))
}
lchob$replot(exp, env=c(lenv,lchob$Env), expr=TRUE)
lchob
}

`addChVol` <-
function (n = 10, maType, ..., on = NA, legend = "auto")
{
lchob <- get.current.chob()
x <- as.matrix(lchob@xdata)
x <- chaikinVolatility(HL = HLC(x)[,-3], n = n, maType = maType)
yrange <- NULL
chobTA <- new("chobTA")
if (NCOL(x) == 1) {
chobTA@TA.values <- x[lchob@xsubset]
lenv <- new.env()
lenv$chartChVol <- function(x, n, maType, ..., on, legend) {
xdata <- x$Env$xdata
xsubset <- x$Env$xsubset
ChaikinVol <- chaikinVolatility(HL = HLC(xdata)[,-3], n = n, maType = maType)[xsubset]
spacing <- x$Env$theme$spacing
x.pos <- 1 + spacing * (1:NROW(ChaikinVol) - 1)
xlim <- x$Env$xlim
ylim <- range(ChaikinVol,na.rm=TRUE)
theme <- x$Env$theme

lines(x.pos, ChaikinVol, col = theme$chaikin$col$chaikinvol,
lwd = 1, lend = 2, ...)
}
else chobTA@TA.values <- x[lchob@xsubset, ]
chobTA@name <- "chartTA"
if (any(is.na(on))) {
chobTA@new <- TRUE
}
else {
chobTA@new <- FALSE
chobTA@on <- on
if(missing(maType)) maType <- "SMA"
if(!is.character(legend) || legend == "auto")
legend <- gsub("^addChVol", "Chaikin Volatility", deparse(match.call()))
mapply(function(name, value) {
assign(name, value, envir = lenv)
}, names(list(n = n, maType = maType, ..., on = on, legend = legend)),
list(n = n, maType = maType, ..., on = on, legend = legend))
exp <- parse(text = gsub("list", "chartChVol", as.expression(substitute(list(x = current.chob(),
n = n, maType = maType, ..., on = on, legend = legend)))), srcfile = NULL)
exp <- c(exp, expression(
lc <- xts:::legend.coords("topleft", xlim, range(ChaikinVol,na.rm=TRUE)),
legend(x = lc$x, y = lc$y,
legend = c(paste(legend, ":"),
paste(format(last(ChaikinVol),nsmall = 3L))),
text.col = c(theme$fg, theme$chaikin$col$chaikinvol),
xjust = lc$xjust,
yjust = lc$yjust,
bty = "n",
y.intersp=0.95)))
exp <- c(expression(
# add inbox color
rect(xlim[1], range(ChaikinVol, na.rm=TRUE)[1], xlim[2], range(ChaikinVol, na.rm=TRUE)[2], col=theme$fill),
# add grid lines and left-side axis labels
segments(xlim[1], y_grid_lines(range(ChaikinVol, na.rm=TRUE)),
xlim[2], y_grid_lines(range(ChaikinVol, na.rm=TRUE)),
col = theme$grid, lwd = x$Env$grid.ticks.lwd, lty = 3),
text(xlim[1], y_grid_lines(range(ChaikinVol, na.rm=TRUE)), y_grid_lines(range(ChaikinVol, na.rm=TRUE)),
col = theme$labels, srt = theme$srt,
offset = 0.5, pos = 2, cex = theme$cex.axis, xpd = TRUE),
# add border of plotting area
rect(xlim[1], range(ChaikinVol, na.rm=TRUE)[1], xlim[2], range(ChaikinVol, na.rm=TRUE)[2], border=theme$labels)), exp)
lchob <- current.chob()
if (is.null(lchob$Env$theme$chaikin$col$chaikinvol)) {
lchob$Env$theme$chaikin$col$chaikinvol <- "#F5F5F5"
}
chobTA@call <- match.call()
legend.name <- gsub("^.*[(]", " Chaikin Volatility (", deparse(match.call()))#,
#extended = TRUE)
gpars <- c(list(...), list(col = 8))[unique(names(c(list(col = 8),
list(...))))]
chobTA@params <- list(xrange = lchob@xrange, yrange = yrange,
colors = lchob@colors, color.vol = lchob@color.vol, multi.col = lchob@multi.col,
spacing = lchob@spacing, width = lchob@width, bp = lchob@bp,
x.labels = lchob@x.labels, time.scale = lchob@time.scale,
isLogical = is.logical(x), legend = legend, legend.name = legend.name,
pars = list(gpars))
if (is.null(sys.call(-1))) {
TA <- lchob@passed.args$TA
lchob@passed.args$TA <- c(TA, chobTA)
lchob@windows <- lchob@windows + ifelse(chobTA@new, 1,
0)
do.call("chartSeries.chob", list(lchob))
invisible(chobTA)
xdata <- lchob$Env$xdata
xsubset <- lchob$Env$xsubset
ChaikinVol <- chaikinVolatility(HL = HLC(xdata)[,-3], n = n, maType = maType)[xsubset]
lchob$Env$ChaikinVol <- ChaikinVol
if(is.na(on)) {
lchob$add_frame(ylim=range(ChaikinVol,na.rm=TRUE),asp=1,fixed=TRUE)
lchob$next_frame()
}
else {
return(chobTA)
lchob$set_frame(sign(on)*(abs(on)+1L))
}
lchob$replot(exp, env=c(lenv,lchob$Env), expr=TRUE)
lchob
}