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Re: Convert 3D to 1D, apply fuction then convert back to 3D [message #71431]

Mon, 21 June 2010 05:15

Jeremy Bailin
Messages: 618
Registered: April 2008

Senior Member

On Jun 20, 8:58 pm, Mat <m...@waikato.ac.nz> wrote:
> On Jun 21, 12:21 pm, pp <pp.pente...@gmail.com> wrote:
>
>> On Jun 20, 9:06 pm, Mat <m...@waikato.ac.nz> wrote:
>
>>> The results are three water quality parameters. Actually it does not
>>> matter whether they are within one result or three separate results.
>
>> That still says nothing to answer your question. You called a function
>> that used a (5,nx*xy) array and returned a 3-element array. We do not
>> know how those 3 numbers relate to the 5*nx*ny values in the array, or
>> what you were intending to get that also was supposed to have 5*nx*ny
>> elements.
>
> No the function used the "imageR" from above which is a floating 1D 5
> element array (reformed from a 5 band 3d image (satellite reflectance)
> and returned a 3-element array(water quality). The function is complex
> and not my code so I'm not in a position to post it sorry. So for each
> pixel in the original tiff I want the water quality (three parameters)
> in an image format. I hope this helps.
>
> I think it is simpler if somebody posts a code to convert an
> image(5,nx*xy) to 1D, then convert it back to the original image. I
> think I could fill in the gaps.

I don't think your function is giving you what you think. You are
giving it a 2D [5,N] element array, and it is returning a 1D [3]
element array. From your question, I think you're expecting either
a [3,N] element array or a [3,5,N] element array - i.e. each of those
three values for either every pixel, or every pixel-band combination.

-Jeremy.

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[Message index]

		Re: Convert 3D to 1D, apply fuction then convert back to 3D By: Jeremy Bailin on Mon, 21 June 2010 05:15
		Re: Convert 3D to 1D, apply fuction then convert back to 3D By: penteado on Sun, 20 June 2010 18:14
		Re: Convert 3D to 1D, apply fuction then convert back to 3D By: Mat on Sun, 20 June 2010 17:58
		Re: Convert 3D to 1D, apply fuction then convert back to 3D By: penteado on Sun, 20 June 2010 17:21
		Re: Convert 3D to 1D, apply fuction then convert back to 3D By: Mat on Sun, 20 June 2010 17:06
		Re: Convert 3D to 1D, apply fuction then convert back to 3D By: penteado on Sun, 20 June 2010 16:15
		Re: Convert 3D to 1D, apply fuction then convert back to 3D By: Mat on Mon, 21 June 2010 15:55

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