Re: Babel: help with tables and code blocks?

From: Dan Davison <davison@stats.ox.ac.uk>
To: Bart Bunting <bart@bunting.net.au>
Cc: emacs-orgmode@gnu.org
Subject: Re: Babel: help with tables and code blocks?
Date: Sun, 08 Aug 2010 18:38:51 -0400	[thread overview]
Message-ID: <87k4o0d91g.fsf@stats.ox.ac.uk> (raw)
In-Reply-To: <8762zkd9wl.fsf@bunting.net.au> (Bart Bunting's message of "Mon, 09 Aug 2010 08:20:10 +1000")

Bart Bunting <bart@bunting.net.au> writes:

> On Sun, 08 Aug 2010 15:34:02 -0400, Dan Davison <davison@stats.ox.ac.uk> wrote:
> Dan,
>
> Thank you very much for that explanation! 
>
> This makes the whole thing much clearer.
>
> Do you know where the sbe call is documented in the manual?  I couldn't
> find it my self.

It's documented in the original Worg pages here

http://orgmode.org/worg/org-contrib/babel/intro.php#spreadsheet

but you're right, it looks like that information is completely lacking
from the manual. I've added it as a babel development TODO.

Thanks for pointing that out,

Dan

>
> Thanks again.
>
> Bart
>
>
>> Bart Bunting <bart@bunting.net.au> writes:
>> 
>> > Hi everyone,
>> >
>> > I'm trying to get my head around babel and getting info back into a
>> > table.
>> >
>> > The below org file tracks expenses and the perl code simply sums them
>> > up.
>> >
>> > The code is working but I now want to get the total back into another table.  What I have is not
>> > working can someone tell me what I'm doing wrong here?
>> >
>> > Cheers
>> >
>> > Bart
>> >
>> > * Expenses
>> >
>> > #+tblname: expenses
>> > |------------+-----------------------------------+--------|
>> > |       Date | What                              | Amount |
>> > |------------+-----------------------------------+--------|
>> > | 2010-07-26 | Breakfast                         |      5 |
>> > | 2010-07-26 | groceries                         |    8.5 |
>> > | 2010-07-26 | butchers - chicken                |    5.5 |
>> > | 2010-07-27 | umart - video card, kvm, speakers |    136 |
>> >
>> > * Code
>> >
>> > #+srcname: totals 
>> > #+begin_src perl  :var details=expenses[1:-1]
>> >   my $total = 0;
>> >   foreach my $row  (@$details) {
>> >       $total += @$row[2];
>> >   }
>> >   
>> > return $total;
>> > #+end_src
>> >
>> > #+results: totals
>> > : 155
>> >
>> >
>> >
>> > * Totals
>> >
>> > | Total | #ERROR |
>> >   #+TBLFM: $2=#+call: totals(details=expenses)
>> 
>> Hi Bart,
>> 
>> You've mixed up #+call and sbe there. sbe is what you want to use in a
>> table formula; #+call and #+lob are for standalone lines. Here are a few
>> examples of different ways to do what you're doing. Hopefully they make
>> things clear.
>> 
>> Dan
>> 
>> --8<---------------cut here---------------start------------->8---
>> 
>> * Totals
>> ** Using a table formula
>> 
>> *** Relying on default argument to totals block
>> | Total | 155 |
>> #+TBLFM: $2='(sbe "totals")
>> 
>> *** Providing argument explicitly
>> 
>> The dots are a bug. We'll fix it.
>> 
>> **** version 1
>> | Total | 155... |
>> #+TBLFM: $2='(sbe "totals(details=expenses[1:-1])")
>> 
>> **** version 2
>> | Total | 155... |
>> #+TBLFM: $2='(sbe "totals" (details "expenses[1:-1]"))
>> 
>> 
>> ** Using call/lob
>> 
>> #+call and #+lob are synonyms
>> 
>> *** Relying on default argument to totals block
>> 
>> #+call: totals()
>> 
>> #+results: totals()
>> : 155
>> 
>> or equivalently (it outputs into the same results block):
>> 
>> #+lob: totals()
>> 
>> *** Providing argument explicitly
>> #+call: totals(details=expenses[1:-1])
>> 
>> #+results: totals(details=expenses[1:-1])
>> : 155
>> 
>> --8<---------------cut here---------------end--------------->8---
>> 
>> 
>> 
>> 
>> >
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