I am not sure what you want to do but if you have a well-behaved matrix of
values in a csv file to read in then this might work faster than readcsv:
e.g. if file contents are:
text2 =. '0,0.014648428,0.343476414,-0.105340538,1.565688588', LF,
'1,2,3,-4,5'
text2
0,0.014648428,0.343476414,-0.105340538,1.565688588
1,2,3,-4,5
( [: ".;._1 ','&,);._1 LF , text2
0 0.0146484 0.343476 _0.105341 1.56569
1 2 3 _4 5
Use 1!:1 to read the file contents.
On Thu, Feb 12, 2009 at 12:33 PM, Björn Helgason <[email protected]> wrote:
> readcsv does the fix so aaa is already J array
>
> 2009/2/12 Steven Taylor <[email protected]>
>
> > Hi,
> >
> > could someone take a quick look at this csv import? What is the best way
> to
> > go about this?
> >
> > thanks,
> > Steven
> >
> > NB. the csv 'L1.csv'
> > 0,0.014648428,0.343476414,-0.105340538,1.565688588
> > NB. end of csv
> >
> > load 'csv'
> > aaa=:readcsv jpath 'G:\J\data\l1.csv'
> > aa=:fixcsv aaa
> >
> > |length error: fixcsv
> > | >msk <@chopcsv;._2 y
> >
> > a=:makenum aa
> > ----------------------------------------------------------------------
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> >
>
>
>
> --
> Björn Helgason, Verkfræðingur
> Fugl&Fiskur ehf,
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> http://groups.google.com/group/J-Programming
>
>
> Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari einfaldleikans
>
> góður kennari getur stigið á tær án þess að glansinn fari af skónum
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