From: Eric Schulte <eric.schulte@gmx.com>
To: Gilles Charron <gilles.charron@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: Interaction between org tables and embedded calc
Date: Thu, 23 Aug 2012 10:45:46 -0600 [thread overview]
Message-ID: <87sjbd4kw5.fsf@gmx.com> (raw)
In-Reply-To: <loom.20120821T144735-273@post.gmane.org> (Gilles Charron's message of "Tue, 21 Aug 2012 13:21:41 +0000 (UTC)")
Gilles Charron <gilles.charron@gmail.com> writes:
> Hi,
>
> I recently discovered the beauty of emacs embedded calc. Works great inside
> org files for note taking with math & engineering related content.
>
> I've been trying to get org tables and embedded calc to coordinate with each
> other using assigned variables however it appears that embedded calc uses some
> sort of namespace for storing variables. Below is a sample of what I'm trying
> to do:
>
> Let's say I need to calculate something - I'll assign it to an embedded calc
> variable:
>
> myVariable := 1 + 0.5 => 1.5
>
> Now, embedded calc knows about "myVariable" . Next I would like to use this
> variable inside a org table (like offset all elements in a column with
> "myVariable"):
>
> | Data | Corrected Data (-myVariable) |
> | 0 | should yield -1.5 |
> | 1 | should yield -0.5 |
> | 2 | should yield 0.5 |
>
> I've been trying to use calc-eval along with evalv however they don't appear to
> resolve "myVariable".
>
> Reading though the embedded calc documentation:
>
>
> "The assignment operator `a := 17' does not actually do anything by itself. But
> Embedded Mode recognizes it and marks it as a sort of file-local definition of
> the variable."
>
> How can I access these "file-local definitions" through "calc-eval" or org
> tables? Essentially, I'm looking for an equivalent of org properties
> "$PROP_propertyName" which can be accessed in org tables.
>
This is an interesting question but to the extent that you're asking how
to resolve an embedded calc variable from general calc execution I think
this is more of a calc than an Org-mode question, and should be sent to
the calc mailing list.
>
> I would also like the ability to read from an org table and use the
> content later in a embedded math equation:
>
> | Data |
> |------|
> | 1 |
> | 2 |
> | 3 |
> |------|
> | 6 |
> #+TBLFM: @5$1=vsum(@I..II)
>
> Would like to read the results (6) and use it in a equation:
>
> MoreProcessing := $result + 1.234
>
> How would one go about doing this?
>
Assuming you know the syntax to specify vectors in embedded calc, you
could use a code block to read the table from Org-mode and output the
calc vector syntax into your document.
Best,
>
>
> Thanks!
> Gilles
>
>
--
Eric Schulte
http://cs.unm.edu/~eschulte
prev parent reply other threads:[~2012-08-23 17:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-21 13:21 Interaction between org tables and embedded calc Gilles Charron
2012-08-23 16:45 ` Eric Schulte [this message]
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