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Re: how to sort data based on other sorted data [message #57977 is a reply to message #57973]

Thu, 10 January 2008 11:16

pgrigis
Messages: 436
Registered: September 2007

Senior Member

On Jan 10, 1:23 pm, placebo <willie.mad...@gmail.com> wrote:
>> What are the minimum and maximum values of your coordinate data?
>
> The range for the data is small, nanometer sizes. My data files
> represent the coordinates for atom positions in a crystal lattice.
> The precision in the coordinates goes out to 15 or so decimal places,
> for ex: 4.271762465783982 nm.

It seems like you are getting dangerously close to the Planck
scale there, so don't be surprised if your results get a little
fuzzy... ;-)

Cheers,
Paolo

>
>> The idea is to merge your array of coordinates in a single vector that
>> can be sorted.
>> Example:
>> color=4700000
>> Blue=fix(color/2.^16)
>> Green=fix((color mod 2.^16)/2.^8)
>> Red=fix((color mod 2.^16) mod 2.^8)
>> Print,Blue,Green,Red
>
> I see how the example works with Integers, but I need to find what
> "color" would be for each row of data (floating point). I think the
> "MOD" function may pose a problem here, although I've not played
> around with it yet.

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[Message index]

		Re: how to sort data based on other sorted data By: placebo on Thu, 10 January 2008 12:51
		Re: how to sort data based on other sorted data By: pgrigis on Thu, 10 January 2008 11:16
		Re: how to sort data based on other sorted data By: JMB on Thu, 10 January 2008 10:52
		Re: how to sort data based on other sorted data By: JMB on Thu, 10 January 2008 10:47
		Re: how to sort data based on other sorted data By: placebo on Thu, 10 January 2008 10:23
		Re: how to sort data based on other sorted data By: JMB on Thu, 10 January 2008 05:52
		Re: how to sort data based on other sorted data By: Brian Larsen on Wed, 09 January 2008 13:30
		Re: how to sort data based on other sorted data By: wlandsman on Wed, 09 January 2008 13:03
		Re: how to sort data based on other sorted data By: Tom McGlynn on Fri, 11 January 2008 09:53

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