search for: juv_sum_by_quad

...ise code I use: Juv=read.csv("juvenile_density_20110506.csv") Juv$count[Juv$count<0]<- NA #Missing data is imputed as negative data, so first label it as NA JuvFor=subset(Juv,(location==" 2 Outer 10 m") | (location==" 1 Outer 10 m")) #Subset the data of interest Juv_Sum_by_quad=aggregate(count~year+location+quadrat_juvenile,data= JuvFor,sum) # Calculate sum of each quadrat Juv_Avg=aggregate(count~year+location,data=Juv_Sum_by_quad, mean) #Calculate yearly means So far so good..... I thought I could do this: plot(Juv_Sum1$year, Juv_Sum1$count,type="L") But n...