Format custom summary output to match with ANOVA output in R - r

Question

I'm new to R. We have an assignment that i'm working on. The assignment is on creating R package to mimic Anova table. I have created all the necessary function that is mandated in the assignment. The function calculates the correct values, but I couldn't make it display like ANOVA table that R's built in anova() function can. This is my summary.oneway function
summary.oneway <- function(object, ...){
#model <- oneway(object)
fval <- object$FValue
TAB <- list(t(object$AOV), "Mean Sq."= rbind(object$MSB, object$MSW),
"F Value" = fval, p.value = object$p.value)
res <- list(call=object$call, onewayAnova = TAB)
class(res) <- "summary.oneway"
res
}
This is the output:
Analysis of Variance:
oneway.formula(formula = coag ~ diet, data = coagdata)
[[1]]
Sum of Squares Deg. of Freedom
diet 228 3
Residual 112 20
$`Mean Sq.`
1
[1,] 76.0
[2,] 5.6
$`F Value`
1
13.57143
$p.value
1
4.658471e-05
Actual ANOVA output:
Analysis of Variance Table
Response: coag
Df Sum Sq Mean Sq F value Pr(>F)
diet 3 228 76.0 13.571 4.658e-05 ***
Residuals 20 112 5.6
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
How can I achieve this format? Where and what am I missing?
Thank you so much for your help.
Kuni

Answer 1

The Anova output uses the print method print.anova you may want to take look at methods(print) and specifically stats:::print.anova
You will most likely want to create your own print function
print.oneway <- function(object, ...) {
foo
bar
}