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Re: Write a vector into a file [message #73465 is a reply to message #73414]

Thu, 11 November 2010 18:20

MC
Messages: 50
Registered: September 1996

Member

On Nov 10, 4:36 am, Paolo <pgri...@gmail.com> wrote:
> On Nov 9, 10:18 am, Paulo Penteado <pp.pente...@gmail.com> wrote:
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>> On Nov 9, 1:07 pm, David Fanning <n...@dfanning.com> wrote:
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>>> But I think it works for the wrong reasons, and
>>> I think there is a danger, especially if the data
>>> is not all of the same magnitude, that what ends
>>> up in the file is not exactly what you *expect*
>>> will end up in the file.
>
>> I agree. That way is relying on IDL's guess of how to make a string
>> out of the array, which is just intended to be a handy default (and
>> most often used interactively for the console). But since we do not
>> know what is getting written (might not even be numbers), that is a
>> neat generic trick.
>
>>> Much better, it seems to me, to do this correctly
>>> so that the precision of the data is maintained
>>> in the way you specify. Of course, we can't do
>>> this "correctly" since the end user hasn't told
>>> us anything about his data. It may be he is
>>> content with solutions that just look like they
>>> work. Many people are. :-)
>
>> That is a common problem. Too many are content with always using text
>> files, as if none of the binary formats existed or ever were useful.
>
> On the other hand, text format most likely can be read by anyone
> in any situations. 20 years down the line a binary format may be
> so obsolete that nobody can read it anymore...
>

You don't need 20 years just look at the evolution of (say) HDF or big
endian vs little endian!

Cheers

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[Message index]

		Re: Write a vector into a file By: penteado on Tue, 09 November 2010 07:41
		Re: Write a vector into a file By: pgrigis on Tue, 09 November 2010 07:36
		Re: Write a vector into a file By: penteado on Tue, 09 November 2010 07:18
		Re: Write a vector into a file By: David Fanning on Tue, 09 November 2010 07:07
		Re: Write a vector into a file By: David Fanning on Tue, 09 November 2010 06:37
		Re: Write a vector into a file By: jeanh on Tue, 09 November 2010 06:30
		Re: Write a vector into a file By: penteado on Mon, 08 November 2010 18:08
		Re: Write a vector into a file By: David Fanning on Mon, 08 November 2010 17:56
		Re: Write a vector into a file By: jeanh on Mon, 08 November 2010 17:24
		Re: Write a vector into a file By: David Fanning on Mon, 08 November 2010 17:21
		Re: Write a vector into a file By: MC on Thu, 11 November 2010 18:18
		Re: Write a vector into a file By: MC on Thu, 11 November 2010 18:20
		Re: Write a vector into a file By: Gray on Tue, 09 November 2010 09:01

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