R code for CicadaRWL vs Mass

ctable<-read.delim("cicadaPreySpeciesWithIndicators.txt")
CicadaMass<-ctable[,1]
CicadaRWL<-ctable[,2]
lnCicadaMass <-ctable[,3]
lnCicadaRWL <-ctable[,4]
small<-ctable[,5]
medium<-ctable[,6]
large<-ctable[,7]
 
mediumCross <-medium*lnCicadaRWL
largeCross <-large*lnCicadaRWL
lm3 <- lm(lnCicadaMass ~ lnCicadaRWL + medium)
summary(lm3)
coefs <- coef(lm3)
coefs

jpeg(filename = "FinalCicadaRWLvsMassFittedPlot.jpeg")
plot(CicadaRWL, CicadaMass, main = "Body Size Relationships of Cicadas", xlab="Cicadas RWL (mm)", ylab="Cicadas Wet Mass (mg)", pch = 20)
xCoord1 <- c(23.56:30.16)
points(xCoord1, exp(coefs[1])*xCoord1^(coefs[2]), type="l", lwd=3, col="red")
xCoord2 <- c(40.31:46.23)
points(xCoord2, exp(coefs[1]+coefs[3])*xCoord2^(coefs[2]), type="l", lwd=3, col="blue")
xCoord3 <- c(48.12:55.68)
points(xCoord3, exp(coefs[1])*xCoord3^(coefs[2]), type="l", lwd=3, col="red")

colors <- c("red", "blue")
legend("topleft", c("Small, Large   y = 0.017x^3.02", "Medium   y = 0.02x^3.02"), fill=colors, bty="n")