* How to pass named table reference in source block variable
@ 2013-08-06 21:31 Roland Donat
2013-08-06 22:22 ` Thorsten Jolitz
0 siblings, 1 reply; 10+ messages in thread
From: Roland Donat @ 2013-08-06 21:31 UTC (permalink / raw
To: emacs-orgmode
Hello,
I have the following table :
#+TBLNAME: T
| | x | 1 |
| ^ | | varx |
And I would like to use the reference T$var_x (=1) as input in a source block
variable.
For example, I would have expected the following behavior for this source
code :
#+begin_src python :var x=T$varx :return x
x
#+end_src
#+RESULTS:
: 1
But instead, I get the emacs message : org-babel-ref-resolve: Reference
'T$varx' not found in this
buffer
Any idea to produce the desired result would be much appreciated!
Thanks you in advance.
Roland.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to pass named table reference in source block variable
2013-08-06 21:31 How to pass named table reference in source block variable Roland Donat
@ 2013-08-06 22:22 ` Thorsten Jolitz
2013-08-06 22:27 ` Nick Dokos
2013-08-07 8:28 ` Roland Donat
0 siblings, 2 replies; 10+ messages in thread
From: Thorsten Jolitz @ 2013-08-06 22:22 UTC (permalink / raw
To: emacs-orgmode
Roland Donat <roland.donat@gmail.com> writes:
> Hello,
>
> I have the following table :
> #+TBLNAME: T
> | | x | 1 |
> | ^ | | varx |
>
> And I would like to use the reference T$var_x (=1) as input in a source block
> variable.
> For example, I would have expected the following behavior for this source
> code :
> #+begin_src python :var x=T$varx :return x
> x
> #+end_src
>
> #+RESULTS:
> : 1
>
> But instead, I get the emacs message : org-babel-ref-resolve: Reference
> 'T$varx' not found in this
> buffer
>
> Any idea to produce the desired result would be much appreciated!
>
> Thanks you in advance.
>
> Roland.
This does the job in Emacs Lisp:
#+TBLNAME: T
| | x | 1 |
| ^ | | varx |
#+begin_src emacs-lisp :var x=T[0,-1]
x
#+end_src
#+results:
: 1
--
cheers,
Thorsten
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to pass named table reference in source block variable
2013-08-06 22:22 ` Thorsten Jolitz
@ 2013-08-06 22:27 ` Nick Dokos
2013-08-07 8:28 ` Roland Donat
1 sibling, 0 replies; 10+ messages in thread
From: Nick Dokos @ 2013-08-06 22:27 UTC (permalink / raw
To: emacs-orgmode
Thorsten Jolitz <tjolitz@gmail.com> writes:
> Roland Donat <roland.donat@gmail.com> writes:
>
>> Hello,
>>
>> I have the following table :
>> #+TBLNAME: T
>
> This does the job in Emacs Lisp:
>
> #+TBLNAME: T
> | | x | 1 |
> | ^ | | varx |
>
> #+begin_src emacs-lisp :var x=T[0,-1]
> x
> #+end_src
>
> #+results:
> : 1
Nit: I believe #+TBLNAME is obsolete/deprecated/frowned upon - use
#+name going forward.
--
Nick
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to pass named table reference in source block variable
2013-08-06 22:22 ` Thorsten Jolitz
2013-08-06 22:27 ` Nick Dokos
@ 2013-08-07 8:28 ` Roland Donat
2013-08-07 15:29 ` Thomas S. Dye
1 sibling, 1 reply; 10+ messages in thread
From: Roland Donat @ 2013-08-07 8:28 UTC (permalink / raw
To: emacs-orgmode
Thorsten Jolitz <tjolitz <at> gmail.com> writes:
>
> This does the job in Emacs Lisp:
>
> #+TBLNAME: T
> | | x | 1 |
> | ^ | | varx |
>
> #+begin_src emacs-lisp :var x=T[0,-1]
> x
> #+end_src
>
> #+results:
> : 1
>
Thanks for the answer but in fact, my objective is precisely to avoid using
the indices of the value I want to pass as input of the code block.
My goal is to use the cell name reference "varx" which would make the code
block simpler to maintain. Indeed, if I add new data on the top of table T,
I wouldn't have to change the reference in the code block since the name
reference is fixed.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to pass named table reference in source block variable
2013-08-07 8:28 ` Roland Donat
@ 2013-08-07 15:29 ` Thomas S. Dye
2013-08-07 20:06 ` Roland Donat
0 siblings, 1 reply; 10+ messages in thread
From: Thomas S. Dye @ 2013-08-07 15:29 UTC (permalink / raw
To: Roland Donat; +Cc: emacs-orgmode
Roland Donat <roland.donat@gmail.com> writes:
> Thorsten Jolitz <tjolitz <at> gmail.com> writes:
>
>>
>> This does the job in Emacs Lisp:
>>
>> #+TBLNAME: T
>> | | x | 1 |
>> | ^ | | varx |
>>
>> #+begin_src emacs-lisp :var x=T[0,-1]
>> x
>> #+end_src
>>
>> #+results:
>> : 1
>>
>
> Thanks for the answer but in fact, my objective is precisely to avoid using
> the indices of the value I want to pass as input of the code block.
>
> My goal is to use the cell name reference "varx" which would make the code
> block simpler to maintain. Indeed, if I add new data on the top of table T,
> I wouldn't have to change the reference in the code block since the name
> reference is fixed.
>
>
Perhaps this can help:
http://orgmode.org/worg/org-contrib/babel/examples/lob-table-operations.html
Alternatively, you might pass the table to a code block of a language
that understands tables, such as an R data frame, and use that language
to retrieve values by name.
hth,
Tom
--
Thomas S. Dye
http://www.tsdye.com
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to pass named table reference in source block variable
2013-08-07 15:29 ` Thomas S. Dye
@ 2013-08-07 20:06 ` Roland Donat
2013-08-07 21:53 ` Thomas S. Dye
0 siblings, 1 reply; 10+ messages in thread
From: Roland Donat @ 2013-08-07 20:06 UTC (permalink / raw
To: emacs-orgmode
Thomas S. Dye <tsd <at> tsdye.com> writes:
>
> Perhaps this can help:
>
> http://orgmode.org/worg/org-contrib/babel/examples/lob-table-
operations.html
>
> Alternatively, you might pass the table to a code block of a language
> that understands tables, such as an R data frame, and use that language
> to retrieve values by name.
>
> hth,
> Tom
>
Thank you for the link, I'll check it but seems that it won't solve the
problem. But anyway, I found a workaround that doesn't involve to insert
table reference.
It's a pity that I am so bad at Lisp because I feel this feature wouldn't be
too complicated to code, especially if the reference mechanism is already
implemented.
Thank you again!
Cheers,
Roland.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to pass named table reference in source block variable
2013-08-07 20:06 ` Roland Donat
@ 2013-08-07 21:53 ` Thomas S. Dye
2013-08-08 7:55 ` Roland Donat
0 siblings, 1 reply; 10+ messages in thread
From: Thomas S. Dye @ 2013-08-07 21:53 UTC (permalink / raw
To: Roland Donat; +Cc: emacs-orgmode
Roland Donat <roland.donat@gmail.com> writes:
>>
>> Perhaps this can help:
>>
>> http://orgmode.org/worg/org-contrib/babel/examples/lob-table-
> operations.html
>>
>> Alternatively, you might pass the table to a code block of a language
>> that understands tables, such as an R data frame, and use that language
>> to retrieve values by name.
>>
>> hth,
>> Tom
>>
>
> Thank you for the link, I'll check it but seems that it won't solve the
> problem. But anyway, I found a workaround that doesn't involve to insert
> table reference.
What is the workaround?
All the best,
Tom
--
Thomas S. Dye
http://www.tsdye.com
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to pass named table reference in source block variable
2013-08-07 21:53 ` Thomas S. Dye
@ 2013-08-08 7:55 ` Roland Donat
2013-08-08 15:10 ` Eric Schulte
0 siblings, 1 reply; 10+ messages in thread
From: Roland Donat @ 2013-08-08 7:55 UTC (permalink / raw
To: emacs-orgmode
Thomas S. Dye <tsd <at> tsdye.com> writes:
>
> Roland Donat <roland.donat <at> gmail.com> writes:
>
> >>
> >> Perhaps this can help:
> >>
> >> http://orgmode.org/worg/org-contrib/babel/examples/lob-table-
> > operations.html
> >>
> >> Alternatively, you might pass the table to a code block of a language
> >> that understands tables, such as an R data frame, and use that language
> >> to retrieve values by name.
> >>
> >> hth,
> >> Tom
> >>
> >
> > Thank you for the link, I'll check it but seems that it won't solve the
> > problem. But anyway, I found a workaround that doesn't involve to insert
> > table reference.
>
> What is the workaround?
>
> All the best,
> Tom
Well, my main objective was to write piece of code in a given language X
including information stored in some org-table.
So my solution for now was to create some python functions able to generate
my code. I use babel to pass my org-table as input to the python function
and the result is another source block of language X containing the code
taking into account the information of my org-table.
I recognized that the solution seems quite heavy but I have already
developped some python wrapper for my language X so It takes me only 2 hours
to do the job.
All the best.
Roland.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to pass named table reference in source block variable
2013-08-08 7:55 ` Roland Donat
@ 2013-08-08 15:10 ` Eric Schulte
2013-08-08 15:42 ` Roland Donat
0 siblings, 1 reply; 10+ messages in thread
From: Eric Schulte @ 2013-08-08 15:10 UTC (permalink / raw
To: Roland Donat; +Cc: emacs-orgmode
[-- Attachment #1: Type: text/plain, Size: 1652 bytes --]
Roland Donat <roland.donat@gmail.com> writes:
> Thomas S. Dye <tsd <at> tsdye.com> writes:
>
>>
>> Roland Donat <roland.donat <at> gmail.com> writes:
>>
>> >>
>> >> Perhaps this can help:
>> >>
>> >> http://orgmode.org/worg/org-contrib/babel/examples/lob-table-
>> > operations.html
>> >>
>> >> Alternatively, you might pass the table to a code block of a language
>> >> that understands tables, such as an R data frame, and use that language
>> >> to retrieve values by name.
>> >>
>> >> hth,
>> >> Tom
>> >>
>> >
>> > Thank you for the link, I'll check it but seems that it won't solve the
>> > problem. But anyway, I found a workaround that doesn't involve to insert
>> > table reference.
>>
>> What is the workaround?
>>
>> All the best,
>> Tom
>
> Well, my main objective was to write piece of code in a given language X
> including information stored in some org-table.
>
> So my solution for now was to create some python functions able to generate
> my code. I use babel to pass my org-table as input to the python function
> and the result is another source block of language X containing the code
> taking into account the information of my org-table.
>
> I recognized that the solution seems quite heavy but I have already
> developped some python wrapper for my language X so It takes me only 2 hours
> to do the job.
>
> All the best.
>
It sounds like you want to use tables like key-value stores. I think
adding such behavior directly to Org-mode would overly complicate the
data structures passed between code blocks (which currently only
consists of scalars and tables). However, maybe the following could
work.
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: key-value.org --]
[-- Type: text/x-org, Size: 776 bytes --]
Here's an example table with key/value data.
#+name: table
| keys | values |
|------+--------|
| foo | 1 |
| bar | 2 |
| baz | 3 |
| qux | 4 |
Here's a code block which can access the data in such a table by key.
This could be added to the library of babel to make it usable from any
Org-mode file.
#+name: by-key
#+begin_src sh :var data="" :var key=""
echo "$data"|awk "{if(\$1 == \"$key\") print \$2}"
#+end_src
And here's an example usage.
#+headers: :results verbatim
#+begin_src sh :var foo=by-key(table,"foo") :var baz=by-key(table,"baz")
cat <<EOF
Pulling the data from the above table we find
that foo is $foo and baz is $baz.
EOF
#+end_src
#+RESULTS:
: Pulling the data from the above table we find
: that foo is 1 and baz is 3.
[-- Attachment #3: Type: text/plain, Size: 71 bytes --]
Cheers,
--
Eric Schulte
http://cs.unm.edu/~eschulte
PGP: 0x614CA05D
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to pass named table reference in source block variable
2013-08-08 15:10 ` Eric Schulte
@ 2013-08-08 15:42 ` Roland Donat
0 siblings, 0 replies; 10+ messages in thread
From: Roland Donat @ 2013-08-08 15:42 UTC (permalink / raw
To: emacs-orgmode
Eric Schulte <schulte.eric <at> gmail.com> writes:
>
> It sounds like you want to use tables like key-value stores. I think
> adding such behavior directly to Org-mode would overly complicate the
> data structures passed between code blocks (which currently only
> consists of scalars and tables). However, maybe the following could
> work.
>
>
> Attachment (key-value.org): text/x-org, 776 bytes
>
>
> Cheers,
>
Thanks for the attachment. It works fine indeed!
But should it be so complicated to add this behavior to Org-mode?
I can rewrite your table as follows :
#+name: table
| | keys | values |
|---+------+--------|
| | foo | 1 |
| ^ | | foo |
| | bar | 2 |
| ^ | | bar |
Now I can refer to bar value as $bar in org-table.
So, my suggestion is only to mimic this feature to assign value of source
block variable like :
#+headers: :results verbatim
#+begin_src sh :var foo=table$foo :var bar=table$bar
cat <<EOF
Pulling the data from the above table we find
that foo is $foo and baz is $bar.
EOF
#+end_src
But anyway, thanks for the solution.
Cheers.
Roland.
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2013-08-08 15:42 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-08-06 21:31 How to pass named table reference in source block variable Roland Donat
2013-08-06 22:22 ` Thorsten Jolitz
2013-08-06 22:27 ` Nick Dokos
2013-08-07 8:28 ` Roland Donat
2013-08-07 15:29 ` Thomas S. Dye
2013-08-07 20:06 ` Roland Donat
2013-08-07 21:53 ` Thomas S. Dye
2013-08-08 7:55 ` Roland Donat
2013-08-08 15:10 ` Eric Schulte
2013-08-08 15:42 ` Roland Donat
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