COnvert 3d matrix to 2D

Question

Joana 2019-12-5

评论： Star Strider 2019-12-5

I have a matrix of x=1200x30x410, i need to change it to 2D as x=3600x410. How to do that.?

it gives an error by using reshape that 'Product of known dimensions, 410, not divisible into total number of elements, 3672000'

Answer 1

Star Strider 2019-12-5

The reshaped matrix has to be (36000 x 410).

x = rand(1200,30,410);              % Create Matrix
y = reshape(x,[],410);

You can reduce the first dimension afterwards, if necessary.

Joana 2019-12-5

It doesn't work actually. Here's the x for example i need to change.

y should be equal to 6000x102

Star Strider 2019-12-5

Please define ‘doesn’t work’.

It works for me:

D = load('matlab.mat');
x = D.x;
y = reshape(x, [], 102);
whos('y')

producing:

  Name         Size               Bytes  Class     Attributes
  y         6000x102            4896000  double 