R help - Jul 2016 - adding a data point on a boxplot

Hi


Please could somebody offer some assistance with the following problem?

I am trying to use the boxplot function. As standard it displays (min, lower Q,
median, Upper Q and Max). For each dotplot I would also like to add the
current/most recent value from my data series as a data point. The goal being to
graphically show where current values are compared to the above standard
statistics.

I have removed the date columns from the data but it should be in descending
order i.e. the last data point in each series should be the current value.

Happy for someone to amend the whole code if there is a smarter way of doing it.

Thanks for any help you can give with this.

See code below:

blpConnect()


data<-data.frame(LargeValue=bdh("DJUSVL Index",
c("PX_LAST"), start.date=Sys.Date()-252*5),
                 LargeGrowth=bdh("DJUSGL Index",
c("PX_LAST"), start.date=Sys.Date()-252*5))
data <- data[,!names(data) %in%
c("LargeValue.date","LargeGrowth.date")]
boxplot(data, las = 2, names = c("Large Value"," Large
Growth"), col =
c("red","royalblue2"),main=toupper("Box Plot Value vs
Growth"), Xlab="Index Level", range = 0, horizontal=TRUE)



Thanks
Pierre

	[[alternative HTML version deleted]]

> On Jul 25, 2016, at 3:20 AM, Pierre Micallef <micallefpierre at
hotmail.com> wrote:
> 
> Hi
> 
> 
> Please could somebody offer some assistance with the following problem?
> 
> I am trying to use the boxplot function. As standard it displays (min,
lower Q, median, Upper Q and Max). For each dotplot I would also like to add the
current/most recent value from my data series as a data point. The goal being to
graphically show where current values are compared to the above standard
statistics.
> 
> I have removed the date columns from the data but it should be in
descending order i.e. the last data point in each series should be the current
value.
> 
> Happy for someone to amend the whole code if there is a smarter way of
doing it.
> 
> Thanks for any help you can give with this.
> 
> See code below:
> 
> blpConnect()
> 
> 
> data<-data.frame(LargeValue=bdh("DJUSVL Index",
c("PX_LAST"), start.date=Sys.Date()-252*5),
>                 LargeGrowth=bdh("DJUSGL Index",
c("PX_LAST"), start.date=Sys.Date()-252*5))
> data <- data[,!names(data) %in%
c("LargeValue.date","LargeGrowth.date")]
> boxplot(data, las = 2, names = c("Large Value"," Large
Growth"), col =
c("red","royalblue2"),main=toupper("Box Plot Value vs
Growth"), Xlab="Index Level", range = 0, horizontal=TRUE)
> 
> 
This should be very easy. (I'm not reviewing your code since it is obviously
not reproducible yet. Presumably you would want to use tail( vectname, 1) to get
the last point.)

To plot a large red "point" (actually a circle) at 0 in the first
"column" of the first example on the ?boxplot page, you would issue:

points(1, 0, cex=5, col="red")

-- 

David.

> 
> Thanks
> Pierre
> 
> 	[[alternative HTML version deleted]]
> 
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David Winsemius
Alameda, CA, USA