[Scilab-users] Wanted: Command like regexp accepting a string vector for haystack

[Jens Simon Strom]

Hallo Samuel,
Just further feedback! In my case, when concatenating the 7000 lines 
(minimum example of a gpx file) to one long string 1 x 1, grep needs 
three times more computing time compared to parsing the lines in a loop. 
Here vectorisation is way slower.

Kind regards
Jens
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Am 06.12.2018 14:51, schrieb Jens Simon Strom:
> Thanks Samuel,
>
> That works fine.
>
> Regards
> Jens
> --------------------------------------------------------------------------------------
> Am 05.12.2018 21:50, schrieb Samuel Gougeon:
>> Hello Jens,
>>
>> Le 05/12/2018 à 17:47, Jens Simon Strom a écrit :
>>>
>>> Hallo Scilab experts,
>>> I am looking for a command to
>>>
>>> *return the match (or position) of a character string (=needle) in a 
>>> **vector**of strings (=haystack), where needle may be a regular 
>>> expression*
>>>
>>> Needle occurs only once in any line of haystack. That may ease the 
>>> problem.
>>>
>>> [start, final, match] =regexp(input, pattern, 'r') is very close to it but does not accept a vector of strings as a haystack.
>>>
>>> I hope to have overlooked something in my search. Is there such a command?
>>>
>>> Vectorisation is essential here because otherwise the search is too slow for many lines (<10^6).
>>
>> You may concatenate your input array with some gluing character that 
>> you know is not in the strings (for instance, likely, ascii(10)), and 
>> then use regexp() on the single glued result.
>>
>> HTH
>> Samuel
>>
>>
>>
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>

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