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From: tsd@tsdye.com (Thomas S. Dye)
To: Michael Hannon <jm_hannon@yahoo.com>
Cc: Org-Mode List <emacs-orgmode@gnu.org>,
	Eric Schulte <eric.schulte@gmx.com>
Subject: Re: Babel: communicating irregular data to R source-code block
Date: Tue, 24 Apr 2012 07:18:19 -1000	[thread overview]
Message-ID: <m1bomhxd44.fsf@tsdye.com> (raw)
In-Reply-To: <1335251229.83988.YahooMailNeo@web161905.mail.bf1.yahoo.com> (Michael Hannon's message of "Tue, 24 Apr 2012 00:07:09 -0700 (PDT)")

Michael Hannon <jm_hannon@yahoo.com> writes:

> On Monday, April 23, 2012 at 11:44 PM Thomas S. Dye wrote:
> .
> .
> .
>> The documentation of read.table has this:
>> The number of data columns is determined by looking at the first five lines
>> of input (or the whole file if it has less than five lines), or from the
>> length of col.names if it is specified and is longer. This could conceivably
>> be wrong if fill or blank.lines.skip are true, so specify col.names if
>> necessary (as in the ‘Examples’).
>> The example is this:
>> read.csv(tf, fill = TRUE, header = FALSE,
>>         col.names = paste("V", seq_len(ncol), sep = ""))
>> where read.csv is a synonym of read.table with preset arguments.
>> This explains why the sixth line wraps.
> .
> .
> .
> Thanks, Tom.  I had just run across this myself. I guess I need to walk a mile
> in somebody's moccasins before complaining, but this behavior on the part of R
> seems totally stupid to me.
> I'm going to have to mull this over some more.
> -- Mike
Yes, please do. I'm not a programmer, and often get things wrong, but I
trust you'll help rein me in if I get off on a tangent. 

It would be good if this limitation in ob-R were eliminated.  The way I
see it, ob-R is designed to handle a subset of the expected input.  It
coerces a variable into a tsv table, then reads it into R, expecting all
cells are filled.  At the same time, other babel modules are free to
export structures (in the Pascal's triangle example, a list of lists)
that orgtbl-to-tsv interprets as a table with empty cells.  It would be
nice if ob-R could be made to read all the tables that orgtbl-to-tsv is
able to create.

All the best,

Thomas S. Dye

  reply	other threads:[~2012-04-24 17:18 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-21 20:17 Babel: communicating irregular data to R source-code block Michael Hannon
2012-04-22  0:44 ` Thomas S. Dye
2012-04-22 15:58   ` Eric Schulte
2012-04-23 16:46     ` Thomas S. Dye
2012-04-23 15:41       ` Eric Schulte
2012-04-23 19:17         ` Thomas S. Dye
2012-04-23 22:24     ` Michael Hannon
2012-04-23 21:05       ` Eric Schulte
2012-04-24  0:23       ` Thomas S. Dye
2012-04-23 22:55         ` Eric Schulte
2012-04-24  6:44           ` Thomas S. Dye
2012-04-24  7:07             ` Michael Hannon
2012-04-24 17:18               ` Thomas S. Dye [this message]
2012-04-24 19:23                 ` Thomas S. Dye
2012-04-25 23:52               ` Thomas S. Dye
2012-04-26  2:06                 ` Michael Hannon
2012-04-26  6:34                   ` Thomas S. Dye

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