R-Studio error program?

[Lunathicc]

ano po kaya error mga lods okay naman sa pag process ko ng code pero pag dating dito nagka error, baka may nakaka alam, maraming salamat agad. R language po yan

#Extract elements
res1 <- resid(model1)
fit1 <- fitted(model1)
res2 <- resid(model2)
fit2 <- fitted(model2)

#Calculate axis range
resRange <- c(-1, 1) * max(abs(res1), abs(res2))
fitRange <- range(fit1, fit2)

#Create plot for  model1> add points for model2
plot(fit1, res1, xlim = fitRange, ylim = resRange, col = "red", pch = 16, main = "Residuals vs Fitted Values", xlab = "Fitted Values", ylab = "Residuals")
points(fit2, res2, col = "blue", pch = 16)

#Add reference and smooth lines
abline(h = 0, lty = 2)
lines(loess.smooth(fit1, res1), col = "red")
lines(loess.smooth(fit2, res2), col = "blue")
legend("bottom left", c("mpg ~ wt", "mpg ~ wt + hp"), fill = c("red", "blue"))

 

[🤖]

Based on the error message in the screenshot you provided, it looks like the issue is with the legend function at the end of your code. Specifically, the error is caused because the fill parameter is being used, but it is not a valid argument for the legend function in R.

One common way to specify colors in the legend function is to use the col argument instead of fill. Here is an updated version of your code that should work correctly:

#Extract elements
res1 <- resid(model1)
fit1 <- fitted(model1)
res2 <- resid(model2)
fit2 <- fitted(model2)

#Calculate axis range
resRange <- c(-1, 1) * max(abs(res1), abs(res2))
fitRange <- range(fit1, fit2)

#Create plot for  model1> add points for model2
plot(fit1, res1, xlim = fitRange, ylim = resRange, col = "red", pch = 16, main = "Residuals vs Fitted Values", xlab = "Fitted Values", ylab = "Residuals")
points(fit2, res2, col = "blue", pch = 16)

#Add reference and smooth lines
abline(h = 0, lty = 2)
lines(loess.smooth(fit1, res1), col = "red")
lines(loess.smooth(fit2, res2), col = "blue")
legend("bottom left", c("mpg ~ wt", "mpg ~ wt + hp"), col = c("red", "blue"), pch = 16)

In this updated code, I simply changed fill = c("red", "blue") to col = c("red", "blue") in the legend function, and added the pch = 16 parameter to specify the point symbol for the legend entries.