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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: Number of line in a text file
Replies: 12   Last Post: Jan 23, 2013 1:51 PM

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Benoit Valley

Posts: 16
Registered: 10/19/05
Re: Number of line in a text file
Posted: Nov 3, 2006 2:57 AM
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Thanks a lot for your explanations.
Benoît.

Kirill wrote:
>
>
> Indeed -- 4.65sec vs former 7.6sec!!!
>
> JWagberg wrote:
>> Kirill wrote:
>> > while ~feof(fh)
>> > ch = fread(fh, chunksize, 'uchar');
>> > if isempty(ch)
>> > break
>> > end
>> ...
>> > n2 = n2 + sum(ch == char(10));
>>
>>
>> Prepend the 'uchar' with an asterisk, '*uchar', and you can
read
> eight
>> times as much with each chunk and the (ch == char(10)) will
also
> speed
>> up by a factor five.
>>
>> /jewa
>
>

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