Re: Complex numbers

["Eric Schulte" <schulte.eric@gmail.com>]

Renier Marchand <renierm@gmail.com> writes:

> I have found the following way to reference my data correctly without
> having to quote it or have data rewritten.
>
> I do:
>
>       #+tblname: my-data
>       | hmin |
>       |------|
>       |      |
>       | 0.05 |
>       |  0.2 |
>       |  0.2 |
>       #+TBLFM: @5$1='(sbe "myfunc" (data "my-data[3:4,0]"))
>
> This also works for complex data as you suggested.
>

Very cool, I would never have thought to use a reference within a table
formula.

>
> But is there a way to refer in the formula to the current table
> instead of a specific table? Because this would obviously not work for
> multiple tables with the same name. (i.e. copy and paste for another
> dataset)
>

No, there is no support for that sort of usage, and adding such a
position dependent reference would be a fairly large change from the
existing reference resolution mechanisms.

Best -- Eric

>
> Regards,
>
> Renier
>
> On Wed, Apr 13, 2011 at 5:52 AM, Eric Schulte <schulte.eric@gmail.com> wrote:
>> Hi Renier,
>>
>> The Org-mode table machinery is interpreting the values of your table
>> cells as emacs lisp (given that the table formula is an elisp, rather
>> than a calc formula).  Due to the "," the result is a weird nested list
>> which confuses your python code block.  Some options here include...
>>
>> 1. wrapping these cells in quotes so that they are passed to the python
>>   block as strings...
>>
>>   #+source: parameter-variation(data=0)
>>   #+begin_src python :result values
>>     return 'text'
>>   #+end_src
>>
>>   |---------------------------------------|
>>   | "(0.0331901438056,0.000535222885197)" |
>>   | "(0.0333434157791,0.000537930174356)" |
>>   | "(0.0345727512157,0.000559346040457)" |
>>   | "(0.0353146483908,0.000571501584524)" |
>>   | "(0.0355522909393,0.000574387067408)" |
>>   | "(0.0356575682336,0.000574851263615)" |
>>   | "(0.0357806926897,0.000575051685084)" |
>>   |---------------------------------------|
>>   | text                                  |
>>   #+TBLFM: @8$1='(sbe parameter-variation (nums @1$1..@7$1))
>>
>> 2. referencing the table from an external code block, rather than inside
>>   of a table formula.  This is probably the easier solution, but it
>>   doesn't insert the result into your table, unless you do something
>>   tricky like give the code block and the table the same name so that
>>   the results of the code block replace the table...
>>
>>   #+results: complex-data
>>   |-------------------------------------|
>>   | (0.0331901438056,0.000535222885197) |
>>   | (0.0333434157791,0.000537930174356) |
>>   | (0.0345727512157,0.000559346040457) |
>>   | (0.0353146483908,0.000571501584524) |
>>   | (0.0355522909393,0.000574387067408) |
>>   | (0.0356575682336,0.000574851263615) |
>>   | (0.0357806926897,0.000575051685084) |
>>   #+TBLFM: @8$1='(sbe parameter-variation (nums @1$1..@7$1))
>>
>>   #+begin_src python :var data=complex-data
>>     return data
>>   #+end_src
>>
>> Hope this helps -- Eric
>>
>> Renier Marchand <renierm@gmail.com> writes:
>>
>>> Hi.
>>>
>>> I have been playing around with complex data that has been returned
>>> from Python. This is obviously not in calc.el format but if I change
>>> them to the correct format I can manipulate them using calc.
>>>
>>> but
>>>
>>> When I want to pass the complex numbers (python format) to python I
>>> get an error. If I pass real number everything works as expected
>>>
>>> For example:
>>>
>>>       #+source: parameter-variation(data=0)
>>>       #+begin_src python :result values
>>>         return 'text'
>>>       #+end_src
>>>
>>>
>>>       |   |  hmin |                                     |
>>>       |---+-------+-------------------------------------|
>>>       |   |       |                                     |
>>>       |   |  0.05 | (0.0331901438056,0.000535222885197) |
>>>       |   |   0.1 | (0.0333434157791,0.000537930174356) |
>>>       |   |   0.3 | (0.0345727512157,0.000559346040457) |
>>>       |   |   0.6 | (0.0353146483908,0.000571501584524) |
>>>       |   |   0.9 | (0.0355522909393,0.000574387067408) |
>>>       |   |   1.2 | (0.0356575682336,0.000574851263615) |
>>>       |   |  10.0 | (0.0357806926897,0.000575051685084) |
>>>       | $ | x=0.1 | y=0.1                               |
>>>       |   |  text |                                     |
>>>       #+TBLFM: @11$2='(sbe "parameter-variation" (data
>>> @3$2..@9$2))::@11$3='(sbe "parameter-variation" (data @3$3..@9$3))
>>>
>>> i.e. I get the word 'text' returned for column 2 where there are real
>>> numbers but I don't get anything returned where there are complex
>>> numbers. As you can see, there are no actual calculation performed on
>>> the data I am just returning 'text' so I am expecting it to work in
>>> both instances.
>>>
>>> The debug sessions show the following for the real column:
>>>
>>> Substitution history of formula
>>> Orig:   '(sbe "parameter-variation" (data @3$2..@9$2))
>>> $xyz->  '(sbe "parameter-variation" (data @3$2..@9$2))
>>> @r$c->  '(sbe "parameter-variation" (data #("0.05" 0 4 (fontified t
>>> face org-table)) #("0.1" 0 3 (fontified t face org-table)) #("0.3" 0 3
>>> (fontified t face org-table)) #("0.6" 0 3 (fontified t face
>>> org-table)) #("0.9" 0 3 (fontified t face org-table)) #("1.2" 0 3
>>> (fontified t face org-table)) #("10.0" 0 4 (fontified t face
>>> org-table))))
>>> $1->    '(sbe "parameter-variation" (data #("0.05" 0 4 (fontified t
>>> face org-table)) #("0.1" 0 3 (fontified t face org-table)) #("0.3" 0 3
>>> (fontified t face org-table)) #("0.6" 0 3 (fontified t face
>>> org-table)) #("0.9" 0 3 (fontified t face org-table)) #("1.2" 0 3
>>> (fontified t face org-table)) #("10.0" 0 4 (fontified t face
>>> org-table))))
>>> Result: text
>>> Format: NONE
>>> Final:  text
>>>
>>> and for the complex column:
>>>
>>> Substitution history of formula
>>> Orig:   '(sbe "parameter-variation" (data @3$3..@9$3))
>>> $xyz->  '(sbe "parameter-variation" (data @3$3..@9$3))
>>> @r$c->  '(sbe "parameter-variation" (data
>>> #("(0.0331901438056,0.000535222885197)" 0 35 (fontified t face
>>> org-table)) #("(0.0333434157791,0.000537930174356)" 0 35 (fontified t
>>> face org-table)) #("(0.0345727512157,0.000559346040457)" 0 35
>>> (fontified t face org-table)) #("(0.0353146483908,0.000571501584524)"
>>> 0 35 (fontified t face org-table))
>>> #("(0.0355522909393,0.000574387067408)" 0 35 (fontified t face
>>> org-table)) #("(0.0356575682336,0.000574851263615)" 0 35 (fontified t
>>> face org-table)) #("(0.0357806926897,0.000575051685084)" 0 35
>>> (fontified t face org-table))))
>>> $1->    '(sbe "parameter-variation" (data
>>> #("(0.0331901438056,0.000535222885197)" 0 35 (fontified t face
>>> org-table)) #("(0.0333434157791,0.000537930174356)" 0 35 (fontified t
>>> face org-table)) #("(0.0345727512157,0.000559346040457)" 0 35
>>> (fontified t face org-table)) #("(0.0353146483908,0.000571501584524)"
>>> 0 35 (fontified t face org-table))
>>> #("(0.0355522909393,0.000574387067408)" 0 35 (fontified t face
>>> org-table)) #("(0.0356575682336,0.000574851263615)" 0 35 (fontified t
>>> face org-table)) #("(0.0357806926897,0.000575051685084)" 0 35
>>> (fontified t face org-table))))
>>> Result:
>>> Format: NONE
>>> Final:
>>>
>>>
>>> Thank you very much for your help.
>>>
>>> Renier
>>>
>>>
>>
>> --
>> Eric Schulte
>> http://cs.unm.edu/~eschulte/
>>
>

-- 
Eric Schulte
http://cs.unm.edu/~eschulte/