Thanks again for your reply, Thierry.
Packing several functions into another function
would again seem to create a nested structure
(only slightly smaller).
The simplest solution would be to use [R]'s parsing
or evaluation commands to skip to the next line
once a certain function returns an error
All the best,
Nir
On Thu, Aug 13, 2009 at 1:07 PM, ONKELINX,
Thierry<Thierry.ONKELINX at inbo.ber > wrote:> It depends on how you want to deal with errors. If you need to do some
depeding on the function that throws an error then you need a nested structure.
Otherwise you can wrap all the functions in a big function an try() that
function.
>
> Big_function <- function(some params, ...){
> ? ? ? ?s1 <- func1(some params) ? ? ? ? # can generate errors
> ? ? ? ?s2 <- func2(s1,...) ?# yes she can aswell
> ? ? ? ?s3 <- func3(s2,...) ?# same here
> }
>
> try(Big_function(parameters))
>
> HTH,
>
> Thierry
>
> PS Please include the mailing list in your replies.
>
>
----------------------------------------------------------------------------
> ir. Thierry Onkelinx
> Instituut voor natuur- en bosonderzoek / Research Institute for Nature and
Forest
> Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
> Gaverstraat 4
> 9500 Geraardsbergen
> Belgium
> tel. + 32 54/436 185
> Thierry.Onkelinx at inbo.be
> www.inbo.be
>
> To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to say what
the experiment died of.
> ~ Sir Ronald Aylmer Fisher
>
> The plural of anecdote is not data.
> ~ Roger Brinner
>
> The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of data.
> ~ John Tukey
>
> -----Oorspronkelijk bericht-----
> Van: Nir Shachaf [mailto:nirshachaf at gmail.com]
> Verzonden: donderdag 13 augustus 2009 11:37
> Aan: ONKELINX, Thierry
> Onderwerp: Re: [R] un run run...
>
> Thierry hi,
>
> Most grateful for your detailed reply.
>
> The specific conditions that I am working with are that every function that
I call can generate an unexpected error: So that using your solution would
result in nested "if - then" statements...
>
> My data looks similar to this:
>
> s1 <- func1(some params) ? ? ? ? # can generate errors
> s2 <- func2(s1,...) ?# yes she can aswell
> s3 <- func3(s2,...) ?# same here
> ...
>
> then the whole thing repeats with diffrent parameters ...
>
> etc.
>
>
> Ideally, I would have set "options(error = expression("some
command"))" and have "some command" advance the execution
pointer of "source" by one step, which would eventually get me to a
working line and continue script run.
>
> Any hint?
>
> Thanks once more,
> Nir
>
> On Thu, Aug 13, 2009 at 12:13 PM, ONKELINX, Thierry<Thierry.ONKELINX at
inbo.be> wrote:
>> Here is an example in pseudo code.
>>
>> Instead of
>>
>> Object <- function that can generate error Other things to do
>>
>> Do something like
>>
>> Object <- try(function that can generate error)
>> if(class(Object) == "try-error"){
>> ? ? ? ?things to do when an error occures } else {
>> ? ? ? ?other things to do
>> }
>>
>> HTH,
>>
>> Thierry
>>
>> ----------------------------------------------------------------------
>> --
>> ----
>> ir. Thierry Onkelinx
>> Instituut voor natuur- en bosonderzoek / Research Institute for Nature
>> and Forest Cel biometrie, methodologie en kwaliteitszorg / Section
>> biometrics, methodology and quality assurance Gaverstraat 4 9500
>> Geraardsbergen Belgium tel. + 32 54/436 185 Thierry.Onkelinx at inbo.be
>> www.inbo.be
>>
>> To call in the statistician after the experiment is done may be no
>> more than asking him to perform a post-mortem examination: he may be
>> able to say what the experiment died of.
>> ~ Sir Ronald Aylmer Fisher
>>
>> The plural of anecdote is not data.
>> ~ Roger Brinner
>>
>> The combination of some data and an aching desire for an answer does
>> not ensure that a reasonable answer can be extracted from a given body
>> of data.
>> ~ John Tukey
>>
>> -----Oorspronkelijk bericht-----
>> Van: r-help-bounces at r-project.org
>> [mailto:r-help-bounces at r-project.org]
>> Namens Nir Shachaf
>> Verzonden: donderdag 13 augustus 2009 11:00
>> Aan: r-help at r-project.org
>> Onderwerp: [R] un run run...
>>
>> Hi All,
>>
>> I am running an Rscript with a bunch of algorithms that are UNSTABLE
>> under some parameter settings.
>>
>> At a certain point one of them sends error massage and my whole run
>> STOPS!
>>
>> What I would like is to save the error massage in some file or
>> variable and carry on to the next command line without stopping this
run...
>>
>> Any help or ideas would be welcome, please, with a concrete example
>> (not just - "have you thought of using 'tryCatch' etc.).
>>
>> Thanks all!
>> Nir
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>> Dit bericht en eventuele bijlagen geven enkel de visie van de
>> schrijver weer en binden het INBO onder geen enkel beding, zolang dit
>> bericht niet bevestigd is door een geldig ondertekend document. The
>> views expressed in ?this message and any annex are purely those of the
>> writer and may not be regarded as stating an official position of
>> INBO, as long as the message is not confirmed by a duly signed
document.
>>
>
> Dit bericht en eventuele bijlagen geven enkel de visie van de schrijver
weer
> en binden het INBO onder geen enkel beding, zolang dit bericht niet
bevestigd is
> door een geldig ondertekend document. The views expressed in ?this message
> and any annex are purely those of the writer and may not be regarded as
stating
> an official position of INBO, as long as the message is not confirmed by a
duly
> signed document.
>