Hi I would like to know how I can apply the same code that works for a single ticker with an XTS Object that has many tickers.
This is the code that works for 1 tickers (Close Price):
getSymbols("IYR",from="1995-01-01",to="2014-01-01")
adj<-IYR$IYR.Adjusted
rtnM<-ROC(adj)[2:length(adj)]
r05<-rtnM[rtnM<= -.05]
plot(sort(r05),type='o',main='US ETF Drops 1995-present returns <= -5%')
100*sort(r05)
I seem to be struggling with these 2 lines when applying it to my full ticker list
mb<- sub[sub<= -.05]
plot.xts(sort(mb),type='o',main='US ETF <= -5%')
I apologise if I haven't made myself clear this is a first post.
> head(sub)
DIA.Close EEM.Close EFA.Close EWZ.Close FXI.Close GLD.Close
GSG.Close
2012-01-03 0.0145024539 0.030116502 0.026891372 0.039461948 0.031336368 0.025528326 0.035154052
2012-01-04 0.0027463668 -0.005642487 -0.005913678 0.003678319 -0.014839976 0.005053908 0.004672906
2012-01-05 -0.0001613424 -0.004382015 -0.014939029 -0.013610224 0.006747285 0.006804694 -0.015267472
2012-01-06 -0.0033942169 -0.012739026 -0.013740366 -0.010031539 -0.014677091 -0.003682778 0.004428052
2012-01-09 0.0010518226 0.010411338 0.003858265 0.020800615 0.021100797 -0.004462870 0.001177510
2012-01-10 0.0058055315 0.021517224 0.015086276 0.020376751 0.022299616 0.013581474 0.007620201
> mb<- sub[sub<= -.05]
Error in `[.xts`(sub, sub <= -0.05) : 'i' or 'j' out of range
Assuming you want to plot together for each ticker the sorted values that are less than -5%,
As stated above by @GSee, the first two lines
adj<-IYR$IYR.Adjusted
rtnM<-ROC(adj)[2:length(adj)]
could be combined to remove the NA's of the first line this way:
#
rtnM <- na.omit(ROC(IYR[,6])) # remove all NA's
Using your xts object sub that holds per column the ROC's,
# get a list per column, with all the fields that are <= -0.05
answer.ls <- lapply(1:ncol(sub), function(i) sub[sub[,i] <= -0.05, i])
If you work directly with a list, then your function would be even simpler:
# import libraries
library(xts)
library(quantmod)
library(RColorBrewer)
mySymbols <- c("IYR", "DIA", "EEM", "EFA", "EWZ", "FXI", "GLD", "GSG")
# get symbols
getSymbols(mySymbols,
from = "1995-01-01",
to = "2014-01-01")
# apply ROC to the last column of each of them,
# get() will allow to access the object using the character name
sub.ls <- lapply(mySymbols,
function(symbol) na.omit(ROC(get(symbol)[,6])))
# check dimensions (all are different)
lapply(sub.ls, dim)
answer.ls <- lapply(sub.ls,
function(sub.ticker) sub.ticker[sub.ticker[,1] <= -0.05, 1])
# each ticker has a different dimension
lapply(answer.ls, dim)
Then just plot it:
# plot each list
require(RColorBrewer)
# create colors palette
pal <- brewer.pal(length(answer.ls), "Set3")
# plot all series
plot(sort(coredata(answer.ls[[1]])),
type = "o",
col = pal[1])
for(i in 2:length(answer.ls)){
lines(sort(coredata(answer.ls[[i]])),
col = pal[i])
}
legend("bottomright",
legend = mySymbols,
col = pal,
pch = c("o", rep("-", length(answer.ls) - 1)),
lwd = 4)
Don't forget coredata() before sorting the XTS objects
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