Graphing using R

Question

I want to draw multiplot graphing using r and I want the value of in X-axis for each site and the different lines in the graph are M, T, L, and G but at the beginning of the code, I got an error,

$ operator is invalid for atomic vectors

Graphdata <- as.data.frame(multiplot)
par(mfrow=c(4,3))
plot(Graphdata$Sites$A, Graphdata$f, ylim=c(0,16), xlab="Number of years", 
     ylab="Relative density", lwd=2)
lines(Graphdata$Sites$M, type="l", col="blue", lwd=2)
lines(Graphdata$Sites$T, type="l", col="green", lwd=2)
lines(Graphdata$Sites$L, type="l", col="grey", lwd=2)
lines(Graphdata$Sites$G, type="l", col="orange", lwd=2)

and some of my data is

Answer 1

You could tack on to your ggplot call using the facet_wrap function and use the 'MySite' variable as your faceting variable

Answer 2

You need to subset as follows:

SiteA<-Graphdata[Graphdata$Sites=="A",]

plot(SiteA$f,SiteA$M)

par(mfrow=c(1,1))

That said, I'm a fan of the tidyverse and think it would give you an easier solution. You'll need to reshape2 your data although gather can do just fine. EDIT You'll also need to decide what to do with the missing values.

library(tidyverse)
Graphdata %>% 
  gather("MySite","MyValue",3:ncol(.)) %>% 
  filter(Sites=="A") %>% 
  ggplot(aes(`f`,MyValue,col=MySite))+geom_point()+geom_line()

This yields: