[BioC] asking for some code

[Adaikalavan Ramasamy]

Thanks Kasper. I did not know R's switch now has a default value which
is very convenient for many things I am doing. And the use of -Inf and
Inf is excellent suggestion as well.

I would like to add that the values of 1, 2, ... have to be characters
as well. Otherwise you have syntax error. For example :

x <- 5
switch(as.character(x),
         "1" = "one",
         "2" = "two",
         "Everything else")

Regards, Adai


On Wed, 2005-03-09 at 18:06 +0100, Kasper Daniel Hansen wrote:
> On Wed, Mar 09, 2005 at 02:41:36PM +0000, Adaikalavan Ramasamy wrote:
> > sapply( x, my.switch.fn )  
> > [1] 1.2655087 1.3721239 1.5728534 2.9082078 0.2016819
> > 
> > 
> > In the case of 2 breakpoints, my example does not look much shorter than
> > the if-else clause below. The drawback of my suggestion is that you need
> > to know the min and max occuring values values (in this case 0 and 1)
> > and switch does not have a default value.
> 
> You can use Inf/-Inf to get around not knowing he min and max, and you 
> can indeed give a further argument to switch such like
>   switch(x, 1 = "One",
>             2 = "Two",
>             "Everything else")
> 
> Kasper
>