[R] Override/Insert (Change) a value (default value) inside a function

[Mohammad Tanvir Ahamed]

Thanks for reply.
as I said , the function in the package is like 
myplot <- function(x,y) { plot(x,y) }

not like 
myplot <- function(x,y) { plot(x,y,...) }

And I cant change the function inside the package!! 

So , in this case how to solve the problem ? 
 Tanvir Ahamed 
Göteborg, Sweden   |  mashranga at yahoo.com 


----- Original Message -----
From: Franklin Bretschneider <bretschr at xs4all.nl>
To: Mohammad Tanvir Ahamed <mashranga at yahoo.com>; R-help groep <r-help at r-project.org>
Sent: Saturday, 11 March 2017, 22:45
Subject: Re: [R] Override/Insert (Change) a value (default value) inside a function

Dear Mohammad Tanvir Ahamed,



Re:

> Hi!, 
> 
> Lets I have a function form a package. 
> The function is,  as an example, 
> 
> myplot <- function(x,y) { plot(x,y) }
> 
> 
> Now I can use the function according to function's defined argument. 
> 
> x<- sort(runif(200))
> y<- 1:200
> myplot(x,y)
> 
> Now I want to input extra argument or override default value of plot inside the function myplot. 
> 
> If I use  myplot (x,y, col = "red", cex = 0.1 )  it does not work . I clearly understand , why it does not work . 
> But in this situation how can i solve the problem ? 
> 



That's where the three-dot argument is for.

See "Introduction to R", paragraph 10.4 The ‘…’ argument.

Succes and
best regards,

Frank
---


Franklin Bretschneider
Dept of Biology
Utrecht University
bretschr at xs4all.nl