From: "Charles C. Berry" <ccberry@ucsd.edu>
To: Rainer M Krug <Rainer@krugs.de>
Cc: emacs-orgmode@gnu.org
Subject: Re: [PATCH] read.table in variable transfer caused sometimes "function not found" error - small change
Date: Tue, 7 Oct 2014 13:51:55 -0700 [thread overview]
Message-ID: <alpine.OSX.2.00.1410071313430.858@charles-berrys-macbook.local> (raw)
In-Reply-To: <m2ppe55rwt.fsf@krugs.de>
On Mon, 6 Oct 2014, Rainer M Krug wrote:
> Hi
>
> The variable transfer of tables from org to R caused sometimes 'could
> not find function "read.table"' errors (e.g. when the file was tangled
> into a ./data directory which was loaded by the function
> devtools::load_all("./")). This can easily be fixed by adding the package
> name to the call in R, i.e. replacing =read.table()= with
> =utils::read.table()= which is done in this patch.
It does fix that one case.
But I wonder if that is the best way.
The heart of the matter is that load_all eventually calls sys.source,
which can be persnickety about finding objects on the search path. See
?sys.source.
If the src block you tangle to ./data/ has any code that uses any other
objects from utils, stats, datasets or whatever, you will be in the
same pickle.
Arguably, this is a bug in devtools::load_data. And maybe it would be
better to beg the maintainer for a fix or an extension that accomodates
your case.
>
> In R the calls read.table and utils::read.table are interchangeable (the
> second one is actually preferred) so no negative effects can be
> expected.
What if the user has intentionally masked read.table or the
eventual package provides its own read.table?
HTH,
Chuck
next prev parent reply other threads:[~2014-10-07 20:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-06 12:00 [PATCH] read.table in variable transfer caused sometimes "function not found" error - small change Rainer M Krug
2014-10-07 20:51 ` Charles C. Berry [this message]
2014-10-08 9:54 ` Rainer M Krug
2014-10-08 15:43 ` Charles C. Berry
2014-10-08 18:39 ` Rainer M Krug
2014-10-08 21:34 ` Charles C. Berry
2014-10-09 8:19 ` [NEW PATCH] " Rainer M Krug
2014-10-09 8:25 ` Rainer M Krug
2014-10-10 4:21 ` Aaron Ecay
2014-10-10 7:43 ` Rainer M Krug
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