how to convert 2D matrix to 1D

Question

Anfal 2014-12-13

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https://ww2.mathworks.cn/matlabcentral/answers/166492-how-to-convert-2d-matrix-to-1d

编辑： AIJAZ BHAT 2020-11-2

i want to convert 2D array with size 83*6580 to 1D array , any help ?

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Answer 1

Star Strider 2014-12-13

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If you just want to make a vector out of it, use the ‘(:)’ notation:

A = rand(83,6580);
V = A(:);

‘V’ is a (546140x1) double.

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Stephen23 2018-2-14

"To make V as 1D array"

Unlike some languages MATLAB does not have any concept of 1D arrays: all arrays have atleast 2 explicit dimensions and infinite implicit trailing singleton dimensions. Because the first dimension is the row dimension the most "basic" kind of vector is actually a column vector.

AIJAZ BHAT 2020-11-2

编辑：AIJAZ BHAT 2020-11-2

Alright I also want to add a precaution here while using it, It operates in column wise concatenation.

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Answer 2

अंबरीश प्रशांत चांदूरकर Ambarish Prashant Chandurkar 2019-7-26

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To Convert a 2D Matrix into a 1D Array( i.e a row vector), such that row vector is formed by concatenating consecutive rows of the 2D Matrix, use the following Code :

OneDArray = reshape(TwoDArray',[1 size(TwoDArray,1)*size(TwoDArray,2)]);