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plot.xts replacements of PerformanceAnalytics chart.TimeSeries and charts.PerformanceSummary
#install.packages("xtsExtra", repos="http://R-Forge.R-project.org")
require(PerformanceAnalytics)
require(xtsExtra) #if you get error, please install xtsExtra from r-forge as shown in the top line
require(RColorBrewer)
#function add alpha or transparency to colors
addalpha <- function(cols,alpha=180) {
rgbcomp <- col2rgb(cols)
rgbcomp[4] <- alpha
return(rgb(rgbcomp[1],rgbcomp[2],rgbcomp[3],rgbcomp[4],maxColorValue=255))
}
#replicate example provided in chart.TimeSeries with plot.xts
# These are start and end dates, formatted as xts ranges.
## http://www.nber.org-cycles.html
cycles.begin.dates<-c("1857-06",
"1860-10",
"1865-04",
"1869-06",
"1873-10",
"1882-03",
"1887-03",
"1890-07",
"1893-01",
"1895-12",
"1899-06",
"1902-09",
"1907-05",
"1910-01",
"1913-01",
"1918-08",
"1920-01",
"1923-05",
"1926-10",
"1929-08",
"1937-05",
"1945-02",
"1948-11",
"1953-07",
"1957-08",
"1960-04",
"1969-12",
"1973-11",
"1980-01",
"1981-07",
"1990-07",
"2001-03",
"2007-12"
)
cycles.end.dates<-c("1858-12",
"1861-06",
"1867-12",
"1870-12",
"1879-03",
"1885-05",
"1888-04",
"1891-05",
"1894-06",
"1897-06",
"1900-12",
"1904-08",
"1908-06",
"1912-01",
"1914-12",
"1919-03",
"1921-07",
"1924-07",
"1927-11",
"1933-03",
"1938-06",
"1945-10",
"1949-10",
"1954-05",
"1958-04",
"1961-02",
"1970-11",
"1975-03",
"1980-07",
"1982-11",
"1991-03",
"2001-11",
"2009-06"
)
# Event lists - FOR BEST RESULTS, KEEP THESE DATES IN ORDER
risk.dates = c(
"1987-10-19",
"1994-02-01",
"1997-07-01",
"1998-08-17",
"1998-09-23",
"2000-07-01",
"2011-09-11")
risk.labels = c(
"Black Monday",
"Bond Crash",
"Asian Crisis",
"Russian Crisis",
"LTCM",
"Tech Bubble",
"Sept 11")
data(edhec)
R=edhec[,1:3,drop=FALSE]
Return.cumulative = cumprod(1+R) - 1
plot.xts(Return.cumulative, main="Default plot.xts Chart") #using all the defaults
#png("chartTimeSeries.png",width=640,height=567,units="px")
plot.xts(Return.cumulative, screens=1, #screens=1 probably most appropriate for this application
blocks = list( #get blocks to plot from above set dates in list form
start.time=paste(cycles.begin.dates,"-01",sep=""),
end.time=paste(cycles.end.dates,"-01",sep=""),
col = "lightblue"),
events = list( #get events to plot from above risk.date in list form
time = risk.dates,
label = risk.labels,
col = "red"),
lwd = 2,
legend.loc = "bottomright", auto.legend=TRUE,
main="EDHEC Style Indexes")
#dev.off()
#png("chartTimeSeries with extra.png",width=640,height=567,units="px")
plot.xts(Return.cumulative,
screens=c(1,2,2), #plot 1st series in 1st panel and 2nd and 3rd series in 2nd panel
layout.screens=c(1,2,2), #just as an example change the layout so 1st panel is 1/3 of area and 2nd is bottom 2/3
blocks = list( #set up blocks for recessions
start.time=paste(cycles.begin.dates,"-01",sep=""),
end.time=paste(cycles.end.dates,"-01",sep=""),
col = "lightblue"),
events = list( #add some event lines
time = risk.dates,
label = risk.labels,
offset = c(0.5,0.5,0.5,0.5,-0.5,0.5), #collision control can also use yadj as in next line
y.adj = c(0,0.5), #with recycling will alternate position for each label
col = "purple"), #don't know why you would use purple but in case you do
lwd = 2,
legend.loc = "bottomright", auto.legend=TRUE,
main="EDHEC Style Indexes")
#dev.off()
#for a little more advanced application we can start to do charts.PerformanceSummary style plot.xts
cumulreturn.panel <- function(...) {
mtext("Cumulative Return", side=1, adj=1, line=-3)
default.panel(...)
abline(h=pretty(c(par("yaxp")[1],par("yaxp")[2]),n=par("yaxp")[3]),col="gray60",lty=3)
abline(h=0, col="black")
}
es.panel <- function(index,x,...) {
mtext("Expected Shortfall", side=1, adj=1, line=-3)
default.panel(index,x,...)
#silly to do this but if we wanted just certain points like every 4 months we could do something like this
#default.panel(index[seq(1,NROW(index),by=4)],coredata(x[seq(1,NROW(index),by=4)]),...)
#abline(h=0, col="black")
abline(h=pretty(c(par("yaxp")[1],par("yaxp")[2]),n=par("yaxp")[3]),col="gray60",lty=3)
abline(h=par("yaxp")[1], col="black")
}
drawdown.panel <- function(index,x,...) {
mtext("Drawdown", side=1, adj=1, line=-2)
default.panel(index,x,...)
#silly to do this but if we wanted just certain points like every 4 months we could do something like this
#default.panel(index[seq(1,NROW(index),by=4)],coredata(x[seq(1,NROW(index),by=4)]),...)
#abline(h=0, col="black")
abline(h=pretty(c(par("yaxp")[1],par("yaxp")[2]),n=par("yaxp")[3]),col="gray60",lty=3)
abline(h=par("usr")[3], col="black")
}
#get some risk measurements to add for Performance Summary style plot
Risk.drawdown <- Drawdowns(R)
Risk.es <- rollapplyr(R,FUN="ES",width=36,p=0.95,na.pad=TRUE)
#take care of NA with 0 at beginning and interpolation at end
Risk.es <- apply(Risk.es,MARGIN=2,FUN=na.fill,fill=c(0,"extend"))
#something wrong with returned value from apply.rolling so indexes don't work properly
data.to.plot <- as.xts(cbind(coredata(Return.cumulative),Risk.es,coredata(Risk.drawdown)),order.by=index(edhec))
#png("chartsPerformanceSummary.png",width=640,height=600,units="px")
plot.xts(data.to.plot,
lwd = c(2,1,1), #do this to show how arguments are recycled
col = brewer.pal(n=9,"PuBu")[c(8,4,6)],
auto.grid = FALSE, #usually auto.grid works just fine but turn off for example purposes
las = 1,yax.loc = "right", # yax.loc could also be flip or left in this case
screens = c(1,1,1,2,2,2,3,3,3), #3 series for each so first 3 in panel 1 second 3 in panel 2 and last 3 in panel 3
layout.screens = c(1,1,2,3), #panel 1 take up first 2 of 4 so 50% and panels 2 and 3 each 25%
bty = "n",
panel = c(cumulreturn.panel,es.panel,drawdown.panel), #c(first.panel,"auto"), #panel cycles through by panel rather than each series
ylab = NA, major.format = "%b %Y", minor.ticks = FALSE,
legend.loc = c("topleft",NA,NA), auto.legend = TRUE,
legend.pars = list(bty = "n", horiz=TRUE), #make legend box transparent
cex.axis = 0.9,
main = NA)
title(main = "Performance Summary of EDHEC Indexes", adj = 0, outer = TRUE, line = -1.5)
#dev.off()
#just playing around with type="h"
#think will only work if all colors very different
plot.xts(Risk.drawdown["2000::2001",],type="h",screens=1,lwd=c(10,25,15),
col=apply(as.matrix(brewer.pal(n=9,"PuBu")[c(8,4,6)]),MARGIN=1,FUN=addalpha,alpha=120))
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