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Re: Write a vector into a file [message #73415 is a reply to message #73414]

Tue, 09 November 2010 07:18

penteado
Messages: 866
Registered: February 2018

Senior Member
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On Nov 9, 1:07 pm, David Fanning <n...@dfanning.com> wrote:
> 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.

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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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