Error: Cannot use `+.gg()` with a single argument.

It is just like the message suggested. You have a + at the end of each line
and
the beginning of the next.  The one at the end is required.  The ones at
the beginning are
causing the error message.

Please put spaces around your assignment arrows.
Difficult to read:  r<-murders
Easy to read:    r <- murders

On Thu, May 7, 2020 at 10:46 PM Ana Marija <sokovic.anamarija at gmail.com>
wrote:

Hello,

I got this error:
Error: Cannot use `+.gg()` with a single argument. Did you
accidentally put + on a new line?

After running this:
data(murders)
library(ggplot2)
library(dplyr)
library(ggplot2)
ggplot(data=murders)

#define the slope of the line
r<-murders %>% summarize(rate=sum(total)/sum(population)*10^6) %>%.$rate
#mamke the plot
murders %>% ggplot(aes(population/10^6,total,label=abb))+
   +geom_abline(intercept = log10(r),lty=2,color="darkgrey")+
   +geom_point(aes(col=region), size=3)+
   +geom_text_repel()+
   +scale_x_log10()+
   +scale_y_log10()+
   +xlab("Populations in millions (log scale)")+
   +ylab("Total number of murders (log scale)")+
   +ggtitle("US Gun Murders in US 2010")+
   +scale_color_discrete(name="Region")+
   +theme_economist()

Is this an issue with my dplyr? Or how I can fix this code in order to
work?

Thanks
Ana

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