Replacing the - with _ is not necessary.
Version #2 only works because of a typo in the 3rd line =, instead
of =.
Version #3:
tblcsv =: 4 : 0
r=. y-.'"/'
r=.([: < ;._1 ',',]) ;._2 r
ttl=. {.r
dat=. |:}.r
for_j. (x e. 'dn')#i.$x do.
dat=. (><&.>".'0',"1>j{dat) j}dat
end.
ttl,|:dat
)
On Thu, Jan 12, 2012 at 11:41 AM, Tom Szczesny <[email protected]> wrote:
> The version I sent earlier appeared to work, but actually does not. This
> version does:
>
> tblcsv =: 4 : 0
> r=. y-.'"/'
> r=, '_' ((r='-')#i.$r) } r
> r=.([: < ;._1 ',',]) ;._2 r
> ttl=. {.r
> dat=. |:}.r
> for_k. (x e. 'dn')#i.$x do.
> dat=. (><&.>".'0',"1>k{dat) k}dat
> end.
> ttl,|:dat
> )
>
> Thanks again to everyone for all the help.
>
> On Thu, Jan 12, 2012 at 8:59 AM, Tom Szczesny <[email protected]> wrote:
>
>> Thanks much.
>> Since I create the csv files, I was able to take some shortcuts:
>> 1) All " are spurious (no commas in columns containing comments)
>> 2) - only occurs in negative numbers
>> 3) / only occus in dates 2004/12/15 (remove the / and don't need
>> getdate at all)
>>
>> This definition is working fine:
>>
>> tblcsv =: 4 : 0
>> r=. y-.'"/'
>> r=, '_' ((r='-')#i.$r) } r
>> r=.([: < ;._1 ',',]) ;._2 r
>> ttl=. {.r
>> dat=. |:}.r
>> for_i. (x e. 'dn')#i.$x do.
>> dat=. (<"".>i{ dat) i} dat
>> end.
>> ttl,|:dat
>> )
>>
>> For large files, the biggest time user might be the need to do transpose
>> twice.
>> tx=:'ssdndssnnnnnnnnnnnnndnns' tblcsv 1!:1 <'t.csv'
>>
>> On Thu, Jan 12, 2012 at 6:16 AM, R.E. Boss <[email protected]> wrote:
>>
>>> If you have a lot of dates, say >100k, getdate will be rather slow.
>>> But since the nub of these dates probably will contain <10k dates, you
>>> can
>>> use nubindex http://www.jsoftware.com/help/dictionary/d221.htm
>>> For that the following adverb will do (tested long time ago)
>>>
>>> nbind=:1 : '](i.!.0~ { u @:]) ~.'
>>>
>>>
>>> R.E. Boss
>>>
>>>
>>> > -----Oorspronkelijk bericht-----
>>> > Van: [email protected] [mailto:general-
>>> > [email protected]] Namens R.E. Boss
>>> > Verzonden: woensdag 11 januari 2012 21:48
>>> > Aan: 'General forum'
>>> > Onderwerp: Re: [Jgeneral] Data from csv files
>>> >
>>> > require 'dates'
>>> >
>>> > 100 #. getdate'2012/01/12'
>>> > 20120112
>>> >
>>> > I would transpose (|:) the matrix and then work a row at a time,
>>> depending
>>> > on the control vector.
>>> > Recently I learned techniques to assign different verbs to different
>>> items.
>>> >
>>> >
>>> > R.E. Boss
>>> >
>>> >
>>> > > -----Oorspronkelijk bericht-----
>>> > > Van: [email protected] [mailto:general-
>>> > > [email protected]] Namens Tom Szczesny
>>> > > Verzonden: woensdag 11 januari 2012 21:13
>>> > > Aan: General forum
>>> > > Onderwerp: Re: [Jgeneral] Data from csv files
>>> > >
>>> > > Thanks, that is very nice to know, but ...
>>> > >
>>> > > Since the csv files I need were created by me, I also know that
>>> > > - the only occurrences of " are spuriously added.
>>> > > - the only occurrences of - are in the representation of
>>> negative
>>> > > numbers, so I can define
>>> > >
>>> > > tblcsv=: 3 : 0
>>> > > r=: (-.y='"')#y
>>> > > r=: '_' ((r='-')#i.$r) } r
>>> > > ([: < ;._1 ',',]) ;._2 r
>>> > > )
>>> > >
>>> > > Next, I plan to figure out how to convert the columns with character
>>> > > strings representing numbers into actual numbers,
>>> > > and the columns with character strings representing dates (
>>> 2012/01/12 )
>>> > > into numbers representing dates ( 20120112 ),
>>> > > where tblcsv becomes dyadic with a control vector like 'SDSSNDNSNS'
>>> as
>>> > the
>>> > > left argument
>>> > > indicating which columns are strings, dates & numbers.
>>> > >
>>> > > On Wed, Jan 11, 2012 at 2:27 PM, Ric Sherlock <[email protected]>
>>> wrote:
>>> > >
>>> > > > Note that you don't need to define tblcsv explicitly:
>>> > > > tblcsv=: ([: <;._1 ','&,);._2
>>> > > > or
>>> > > > tblcsv=: ([: <;._1 ',' , ]);._2
>>> > > >
>>> > > > On Thu, Jan 12, 2012 at 6:29 AM, Tom Szczesny <[email protected]>
>>> > > wrote:
>>> > > > > tested ...... works . ..... thanks!
>>> > > > >
>>> > > > > On Wed, Jan 11, 2012 at 12:23 PM, R.E. Boss <[email protected]>
>>> > wrote:
>>> > > > >
>>> > > > >> tblcsv =: 3 : 0
>>> > > > >> ([: <;._1 ',',]) ;._2 y
>>> > > > >> )
>>> > > > >> (untested)
>>> > > > >>
>>> > > > >> R.E. Boss
>>> > > > >>
>>> > > > >>
>>> > > > >> > -----Oorspronkelijk bericht-----
>>> > > > >> > Van: [email protected] [mailto:general-
>>> > > > >> > [email protected]] Namens Tom Szczesny
>>> > > > >> > Verzonden: woensdag 11 januari 2012 17:55
>>> > > > >> > Aan: General forum
>>> > > > >> > Onderwerp: Re: [Jgeneral] Data from csv files
>>> > > > >> >
>>> > > > >> > Given
>>> > > > >> >
>>> > > > >> > cutc =: 3 : 0
>>> > > > >> > < ;._1 ',',y
>>> > > > >> > )
>>> > > > >> >
>>> > > > >> > tblcsv =: 3 : 0
>>> > > > >> > cutc ;._2 y
>>> > > > >> > )
>>> > > > >> >
>>> > > > >> > tblcsv 1!:1 <'test.csv'
>>> > > > >> >
>>> > > > >> > I assumed that I would be able to represent this as a single
>>> > > > definition,
>>> > > > >> > such as
>>> > > > >> >
>>> > > > >> > tblcsv =: 3 : 0
>>> > > > >> > ( <;._1 ',',) ;._2 y
>>> > > > >> > )
>>> > > > >> >
>>> > > > >> > or
>>> > > > >> >
>>> > > > >> > tblcsv =: 3 : 0
>>> > > > >> > (( <;._1',',)&) ;._2 y
>>> > > > >> > )
>>> > > > >> >
>>> > > > >> > I've tried several other vaiations, and all result in 'syntax
>>> > error'.
>>> > > > Am
>>> > > > >> I
>>> > > > >> > missing something, or does the verb applied to each 'cut'
>>> interval
>>> > > > need
>>> > > > >> to
>>> > > > >> > be defined separately?
>>> > > > >> >
>>> > > > >> > On Mon, Jan 9, 2012 at 5:00 PM, Arthur Anger <[email protected]>
>>> > > wrote:
>>> > > > >> >
>>> > > > >> > > I often use Rank to select sub-arrays from an array:
>>> > > > >> > > <"0 i. 7
>>> > > > >> > > --Art
>>> > > > >> > > ------------------
>>> > > > >> > > Quoting [email protected]:
>>> > > > >> > > . . .
>>> > > > >> > > > Message: 2
>>> > > > >> > > > Date: Mon, 9 Jan 2012 11:46:24 -0500
>>> > > > >> > > > From: Tom Szczesny <[email protected]>
>>> > > > >> > > > Subject: Re: [Jgeneral] Data from csv files
>>> > > > >> > > > To: General forum <[email protected]>
>>> > > > >> > > > Message-ID:
>>> > > > >> > > > <CABn7SNYFw2gyAPKcjx1DMLEru97NMTst6zoGx=
>>> > > > >> > > [email protected]>
>>> > > > >> > > > Content-Type: text/plain; charset=ISO-8859-1
>>> > > > >> > > >
>>> > > > >> > > > As mentioned in the dictionary entry for cut:
>>> > > > >> > > > the phrase u;._2 y applies the verb u to each
>>> interval
>>> > > > created
>>> > > > >> by
>>> > > > >> > > cut,
>>> > > > >> > > > where the fret is the last item, and marks the ends of the
>>> > > > intervals.
>>> > > > >> > > >
>>> > > > >> > > > What is the notation for applying the "each" concept to a
>>> verb
>>> > > > >> > > independent
>>> > > > >> > > > of cut ?
>>> > > > >> > > > For example,
>>> > > > >> > > > <i.7
>>> > > > >> > > > +-------------+
>>> > > > >> > > > |0 1 2 3 4 5 6|
>>> > > > >> > > > +-------------+
>>> > > > >> > > >
>>> > > > >> > > > How do you express
>>> > > > >> > > > < each i.7
>>> > > > >> > > > and get 7 individually boxed items?
>>> > > > >> > > > (I could not find an entry for "each" in the Index, nor in
>>> the
>>> > > > >> > > Vocabulary.)
>>> > > > >> > > . . .
>>> > > > >> > > > End of General Digest, Vol 76, Issue 8
>>> > > > >> > > > **************************************
>>> > > > >> > >
>>> > > > >> > >
>>> > > >
>>> ----------------------------------------------------------------------
>>> > > > >> > > For information about J forums see
>>> > > > >> > http://www.jsoftware.com/forums.htm
>>> > > > >> > >
>>> > > > >> >
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>>>
>>
>>
>
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