Re: Complex numbers

[Renier Marchand <renierm@gmail.com>]

It is a cool idea yes, but I quickly learned that it also have its
problems, i.e. you cant really create nice column formulas because the
reference is not aware of "the current row" etc.

The biggest problem as I see it is that emacs-lisp does not support
the complex data type as lisp (natively) do. I am going to look into a
way of representing it.. maybe a two element lisp list (re im). I am
not really versed in lisp so it is a bit of a problem to modify code,
but I am looking into it.

One problem that I have encountered is that when a two element list is
referenced in the following scenario

| (1 2) | #ERROR |
#+TBLFM: $2='(sbe "myfunc" (data $1))

an error is caused because lisp is trying to execute this list
appearing struct, but when I do

| (1 2) |
| (2 3) |
| resul |
#+TBLFM: $1@3='(sbe "myfunc" (data @1$1..@2$1))

no error is reported because it is assumed to be a list of data for my
python code. i.e. it is sent as [[1,2],[2,3]] which is what I want. Is
there a way to get more consistent behavior?

Thank you.
Renier

On Wed, Apr 13, 2011 at 6:35 PM, Eric Schulte <schulte.eric@gmail.com> wrote:
> 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/
>