If I understand what you wrote, you want something like this:
require'files'
process=: 3 :0
row_number=. ":y
input=: fread '/home/user/input/filename', row_number ,'.pgm'
NB. insert here, some calculations which define output as a sequence
of characters
assert. 1=#$output
assert. ' ' ={.0#output
output fwrite '/home/user/output/filename', row_number ,'.pgm'
)
proccess"0(1+i.50)
The result here will be a list of length 50, representing the number
of bytes written to each of these files (_1 for any case where the
write was unsuccessful).
--
Raul
On Mon, Sep 10, 2012 at 7:41 PM, pascha <[email protected]> wrote:
>
> could I put it into simple form:
>
> I'd like to write a verb that reads and process "each" row of a table (50 x
> 8) with the condition that this verb calls for two other verbs (read and
> write) which they need a specific path. The problem is that how can I read
> this table row by row and number the path's "filenames" based on the
> row_number that is processing?
>
> process=: : 0
> input=: read '/home/user/input/filename', row_number ,'.pgm'
>
> **some calculations**
>
> output=: write '/home/user/output/filename', row_number ,'.pgm'
> )
>
>
>
> Ric Sherlock wrote:
>>
>> I'm struggling to understand exactly what you are trying to achieve
>> but am assuming it just involves processing a set of files. If so then
>> something like this might work.
>>
>> Create a 2 column table of outfilenames ,. infilenames. It doesn't
>> really matter how you do this but for clarity here's an example:
>> outpath=: 'path/out/'
>> inpath=: 'path/in/'
>> outfiles=: ((outpath,'outfile') , ,&'.txt') each 8!:0 ] i.3
>> infiles=: ((inpath,'infile') , ,&'.png') each 8!:0 ] i.3
>> outfiles,.infiles
>> ┌─────────────────────┬───────────────────┐
>> │path/out/outfile0.txt│path/in/infile0.png│
>> ├─────────────────────┼───────────────────┤
>> │path/out/outfile1.txt│path/in/infile1.png│
>> ├─────────────────────┼───────────────────┤
>> │path/out/outfile2.txt│path/in/infile2.png│
>> └─────────────────────┴───────────────────┘
>>
>> Then you want to process each row of this table. The verb processData
>> is a placeholder for whatever processing you need to do to take the
>> contents of the infile and produce the contents for the outfile.
>>
>> (fwrite~ processData@fread)/"1 outfiles,.infiles
>>
>> This is essentially doing the equivalent of the following for each
>> pair of out and in files:
>>
>> 'out/path/outfile1.txt' (fwrite~ processData@fread)
>> 'in/path/infile1.png'
>>
>> HTH
>>
>>
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