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. 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? Thanks! Gilles

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