Dear Pikal and Robert,
thanks for the help, I guess trying the if function is worth it, and indeed, it
works for the example I provided. Unfortunatelly though I am not getting the
expected results with my actual code, which is a lot more complicated using
R2OpenBUGS. Let me give you the actual example:
using my model and input parameters I am generating res with a bugs function:
res <-bugs(list(....)
and also have:
k <-5+2
I have tryed your code as follows:
if (e > 0) { res <-bugs(list(....); k <-5+2 }
my goal is that if e = 0, then not to prompt a call of the model in OpenBUGS,
which is what is happening currently with the way it is written here. Any
thoughts on how to completiley "ignorre" a that line or chunk?
thanks,
Andras
--- On Wed, 3/20/13, Robert Baer <[email protected]> wrote:
From: Robert Baer <[email protected]>
Subject: Re: [R] how to skip part of the code
To: "PIKAL Petr" <[email protected]>
Cc: "Andras Farkas" <[email protected]>, "[email protected]"
<[email protected]>
Date: Wednesday, March 20, 2013, 9:27 AM
On 3/20/2013 8:21 AM, PIKAL Petr wrote:
> Hi
>
>> -----Original Message-----
>> From: [email protected] [mailto:r-help-bounces@r-
>> project.org] On Behalf Of Andras Farkas
>> Sent: Wednesday, March 20, 2013 2:11 PM
>> To: [email protected]
>> Subject: [R] how to skip part of the code
>>
>> Dear All,
>>
>> another quick question, this one is on skipping part of my code, so let
>> us say:
>>
>> a <-5
>> b <-2
>> e <-0
>>
>> d <-a+b
>> f <-a-b
>>
>> what I would like to do is to have R NOT to calculate the value for d
>> in case the value of e equals to zero (essentially skip that "chunk"),
>> but instead move on to calculate te value for f. In the code I am
>> working with the value of e changes, and I would like to calculate d
>> and f at all times when the value of e is greater then zero. If
>> possible, I would like to do this without using the functions "ifelse"
>> and "if else"
> Why? This is exactly the reason for which if else was invented?
>
> I am not sure if some simple solution without if is available.
>
> if (e > 0) { d <- a+b; f <- a-b }
>
> seems to be simple.
>
> Regards
> Petr
I second Petr on the question, why not use if? But this might meet your
criteria.
a <- 5
b <- 2
e <- 0
#
dat <- data.frame(a, b, e)
dat$d[dat$e > 0] <- a + b
dat$f <- a - b
>> appreciate the help,
>>
>> Andras
>> [[alternative HTML version deleted]]
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
--
Robert W. Baer, Ph.D.
Professor of Physiology
Kirksille College of Osteopathic Medicine
A. T. Still University of Health Sciences
Kirksville, MO 63501 USA
[[alternative HTML version deleted]]
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