Converting 2D matrix to 3D matrix
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I have a 3529 x 2 2D matrix. how can I convert it into a 3D matrix? please help.
2 个评论
Guillaume
2018-2-28
More information required. Why do you want it to be 3D? What should the size of the 3D matrix be? Which elements of the 2D matrix should move to the 3rd dimension?
Walter Roberson
2018-2-28
What size of output are you expecting?
采纳的回答
Andrei Bobrov
2018-2-28
out = reshape(your_matrix,size_of_your_new_3D_matrix)
7 个评论
Walter Roberson
2018-2-28
3529 and 2 are both prime so the only way to create a 3d matrix from this through reshape is if one of the three dimensions ends up singular.
saswati bhattacharya
2018-3-1
Walter Roberson
2018-3-1
What size of output are you expecting? 42 x 42 x 4 ?
saswati bhattacharya
2018-3-1
Saswati, do you realise that you're not providing enough information at all for us to answer your question and we're left guessing at what you're trying to do? From the little you have said so far we can guess that you may have a 2D matrix of X, Y and Z coordinates. How these are arranged, we don't know. It could be
[X1 Y1 Z1 X2 Y2 Z2 X3 Y3 Z3
X4 Y4 Z4 X5 Y5 Z5 X6 Y6 Z6
.... ]
or
[X1 X4 X6 X9
Y1 Y4 Y6 Y9
Z1 Z4 Z6 Z9
X2 X5 X7 X9
...]
or
[X1 X2 X3 X4 X5 X6
X7 X8 X9 Y1 Y2 Y3
Y4 Y5 ...
or any other arrangment. Any of these requires a different solution to the questions " how can I convert it into a 3D matrix" and "how to plot these data".
For all we know, you don't actually have X, Y, Z but just have
[Z11 Z12 Z13 Z14 Z15 ...
Z21 Z22 Z23 Z24 Z25 ...
...
saswati bhattacharya
2018-3-6
编辑：Walter Roberson
2018-3-6
Guillaume
2018-3-6
You have yet to explain what any of these numbers represent so we have absolutely no idea how to convert your 2D matrix to 3D.
You really really really need to explain a lot better what it is you want.
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