From: Eric Schulte <firstname.lastname@example.org> To: Gilles Charron <email@example.com> Cc: firstname.lastname@example.org Subject: Re: Interaction between org tables and embedded calc Date: Thu, 23 Aug 2012 10:45:46 -0600 [thread overview] Message-ID: <email@example.com> (raw) In-Reply-To: <loom.20120821T144735firstname.lastname@example.org> (Gilles Charron's message of "Tue, 21 Aug 2012 13:21:41 +0000 (UTC)") Gilles Charron <email@example.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 Gilles Charron 2012-08-23 16:45 ` Eric Schulte [this message]
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