[R] R3.3.1 - Windows10 OS - Overriding default Legend title with user specified title

[Tom Wright]

A quick google for "ggplot2 change legend text" turns up several hits.
This stackexchange question has several recipes.
http://stats.stackexchange.com/questions/5007/how-can-i-change-the-title-o
f-a-legend-in-ggplot2

including the correct use of the labs() function;
labs(aesthetic='BrandValue in Billions')

-----Original Message-----
From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of
udhayakanth reddy
Sent: July 26, 2016 12:02 PM
To: r-help at r-project.org
Subject: [R] R3.3.1 - Windows10 OS - Overriding default Legend title with
user specified title

Team - Could you please do the needful.

I have a below code using ggplot2() package. I am trying to plot between
the variables - 'Company Advertising' and 'Brand Revenue' of my data frame
'htmltable' , when the another variable 'Industry' is 'Luxury'; using
ggplot() function. I am using another variable of my data frame 'Brand
Value' as colour variable.

p<-
ggplot(htmltable[htmltable$Industry='Luxury',],aes(x='CompanyAdvertising',
y='BrandRevenue')

q <- p+geom_point(aes(color='BrandValue',size='BrandValue') +
geom_text(label='Brand')

r <- q+xlab("Company Advertisiment in Billions")+ylab("Brand Revenue in
Billions") +ggtitle("Luxury")

r+theme(plot.title=element_text(size=10,face='bold'),legend.key=element_
r+rect(fill='light
blue'))

Here, I want to change my legend title from "BrandValue" to "BrandValue in
Billions". Please suggest.

I tried using labs parameter in the below statement. But it is resulting
in 2 legends.

r <- q+xlab("Company Advertisiment in Billions")+ylab("Brand Revenue in
Billions") +ggtitle("Luxury")+labs(colour="BrandValue in Billions")


Thanks,

Udhay

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