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Re: tab2rdf.py doesn't generate Turtle

From: Jonathan Rees <jar@creativecommons.org>
Date: Wed, 11 Aug 2010 11:07:46 -0400
Message-ID: <AANLkTikyx1Vstfkqc8w+JoO4ORMbK=QQCUbmFS=d6g6n@mail.gmail.com>
To: Tim Berners-Lee <timbl@w3.org>
Cc: public-cwm-bugs@w3.org
Ah, I think this is my problem... too few headings added to top of
file. The comment about getting a syntax error on output when there
are too many input columns and the last is empty still holds, but
that's really an input error so I'll take the blame. Sorry for the
false alarm

Jonathan

# headings found:  3 ['head1', 'head2', 'head3']
[]
    :head1 "x11";
    :head2 "x12";
    :head3 "x13".
[]
    :head1 "x21";
    :head3 "x23".
#  3 headings but 2 values
[]
    :head1 "x31";
    :head2 "x32".
[]
    :head1 "x41";
    :head2 "x42";
#  3 headings but 4 values
[]
    :head1 "x51";
    :head2 "x52";
    :column3 "x54".
#  3 headings but 4 values
[]
    :head1 "x61";
    :head2 "x62";
    :head3 "x63";
    :column3 "x64".
# Total number of records: 6



On Wed, Aug 11, 2010 at 10:56 AM, Jonathan Rees <jar@creativecommons.org> wrote:
> Thanks for the quick fix. Now I'm having trouble with files that have
> empty columns (two tabs in a row).  It would be nice if the script
> interpreted that situation as meaning that the value is the empty
> string; or else as there being no value at all... anything that treats
> tabs as significant and keeps things aligned the way Excel would.
>
> (Also, if there is an extra column with an empty value, i.e. extra tab
> char at end of line, you get syntactically incorrect output.)
>
> Thanks
> Jonathan
>
> head1   head2   head3
> x11     x12     x13
> x21             x23
> x31     x32
> x41     x42
> x51     x52             x54
> x61     x62     x63     x64
>
> On Mon, Aug 2, 2010 at 6:04 PM, Tim Berners-Lee <timbl@w3.org> wrote:
>> SIgh.  A random and unnecessary departure of turtle from N3 IMHO.
>>
>> Changed the code anyway.  Almost 10 years on
>>
>> Tim
>>
>>
>> total revisions: 6;     selected revisions: 6
>> description:
>> ----------------------------
>> revision 1.6
>> date: 2010/08/02 22:01:22;  author: timbl;  state: Exp;  lines: +31 -8
>> See mail from JAR to public-cwm-talk mid:AANLkTingr3WLyjOFVQqz-v5AASMe4sFbqkhn4ap26DiG@mail.gmail.com
>> ----------------------------
>> revision 1.5
>> date: 2007/10/18 20:55:41;  author: timbl;  state: Exp;  lines: +38 -17
>> doublequote escaping
>> ----------------------------
>> revision 1.4
>> date: 2007/06/26 02:36:15;  author: syosi;  state: Exp;  lines: +55 -55
>> fix tabs
>> ----------------------------
>> revision 1.3
>> date: 2000/11/10 23:04:18;  author: timbl;  state: Exp;  lines: +1 -1
>> Starting basis for qualifiers
>> ----------------------------
>> revision 1.2
>> date: 2000/11/02 20:48:45;  author: timbl;  state: Exp;  lines: +10 -0
>> first schema hack
>> ----------------------------
>> revision 1.1
>> date: 2000/10/31 15:56:37;  author: timbl;  state: Exp;
>> Hacked TabDelimted-windows format to n3 converter
>> =============================================================================
>>
>> On 2010-08 -02, at 16:37, Jonathan Rees wrote:
>>
>>> I'm trying to use http://www.w3.org/2000/10/swap/tab2n3.py
>>> and have discovered the hard way that it doesn't generate Turtle...
>>> not that it claims to, but I felt like complaining.
>>>
>>> Apparently the Turtle grammar requires a predicate and object
>>> following each subject, and in the output of tab2n3 there are subjects
>>> with no predicate and object. E.g.
>>>
>>> # headings found:  3 ['strain_id', 'strain_name', 'strain_type']
>>> [
>>>    :strain_id "MGI:2164743";
>>>    :strain_name "(C57BL/6JEiJ x C3Sn.BLiA-Pde6b<+>)F1";
>>>    :strain_type "Not Specified";
>>> ] .
>>>
>>> Here's what the Turtle submission says:
>>>
>>> [6]   triples ::=     subject predicateObjectList
>>> [7]   predicateObjectList     ::=     verb objectList ( ';' verb objectList )* ( ';')?
>>>
>>> To generate correct Turtle is possible but awkward. You could say
>>> tab2n3 is working as designed, and was never meant to generate Turtle,
>>> only N3, but... wouldn't it be nice?
>>>
>>> Jonathan
>>>
>>
>>
>
Received on Wednesday, 11 August 2010 15:08:15 UTC

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