R help - Jan 2022 - Error: if statement: missing value where TRUE/FALSE needed

On Wed, 5 Jan 2022 15:47:07 +0000 (UTC)
Chuck Coleman via R-help <r-help at r-project.org> wrote:
> I then made the browser() statement conditional to stop execution if
> a missing argument were encountered and detectspikes() happily passed
> it and crashed.
How exactly do you check for a missing argument?

Could options(error = recover) shed some more light on the situation?
This way a crash happens first, then you get to use browser() to take a
look at the environment at the time of the crash.

-- 
Best regards,
Ivan

On Wed, 5 Jan 2022 21:22:37 +0300
Ivan Krylov <krylov.r00t at gmail.com> wrote:
> How exactly do you check for a missing argument?
To answer my own question, the check is
>> browser(expr = {
>>  is.na(w1) | is.na(ub) | is.na(m) | is.na(wi) | is.na(lb)
>> })
I think that there are NAs in xseg, which I don't see a check for. In
particular, a few lines above, there's
>> md = median( xseg, na.rm = TRUE);
>> if (robust) sdd = mad(xseg,na.rm = TRUE)
>> else sdd = sd(xseg,na.rm = TRUE)
...which seems to suggest they are expected to happen there.

Not sure which advice to give regarding the choice of file hosting
service. On the one hand, SourceForge lets you upload a whole directory
of files in arbitrary formats, but isn't very convenient do download
more than one file from. On the other hand, "pastebin" services like
http://paste.debian.net/ or http://paste.org.ru/ let us browse the code
right away, without having to look at the "Your download will start
shortly..." screen, but don't host *.RData or more than one file per
link. I guess that some other code hosting service like
SourceHut/GitHub/GitLab/Gitea/... could fulfil both criteria.

-- 
Best regards,
Ivan