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what is the difference between matrix and array in the meaning and functions?

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i want to know the difference between the matrix and array in terms of the meaning and function , if any one will answer please with an example thanks
  4 Kommentare
Star Strider
Star Strider am 29 Jul. 2014
MATLAB takes liberties with the definition. See for example the documentation on Cell Arrays.

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Akzeptierte Antwort

Arun Mathew Iype
Arun Mathew Iype am 29 Jul. 2014
Bearbeitet: Jan am 30 Mai 2017
I agree with what dpb said above. Here is the example which will help you visualize.
Matrix
mat_A= [1 2 3; 3 4 5; 6 7 8]
Conventionally this is shown in 2 dimenstions (2D) as:
Mat_A =
1 2 3
3 4 5
6 7 8
Arrays : May be of various dimensions. The above is a 2D array or matrix. A 1D array is called a vector. arr_1D = [1 2 3 4 5 6 7 8 9] We can also have 3D, as well as, ND arrays. In case of a 3D array, imagine a Rubik’s cube with each cell having a value inside it.
Here is and example using MATLAB "rand" function >> Arr_3D = rand(2,2,2)
Arr_3D(:,:,1) =
0.8147 0.1270
0.9058 0.9134
Arr_3D(:,:,2) =
0.6324 0.2785
0.0975 0.5469
  3 Kommentare
Steven Lord
Steven Lord am 25 Jun. 2022
Another way to explain this is by looking at the help text for the ismatrix function.
help ismatrix
ISMATRIX True if input is a matrix. ISMATRIX(M) returns logical 1 (true) if M is an m-by-n matrix, and logical 0 (false) otherwise. See also ISSCALAR, ISVECTOR, ISROW, ISCOLUMN, ISNUMERIC, ISLOGICAL, ISCHAR, ISEMPTY, SIZE. Documentation for ismatrix doc ismatrix Other functions named ismatrix categorical/ismatrix distributed/ismatrix tall/ismatrix datetime/ismatrix duration/ismatrix
So a 1-by-1 array is a matrix. A 3-by-3 array is also a matrix. But a 2-by-3-by-4 array is not a matrix.
ismatrix(zeros(1, 1))
ans = logical
1
ismatrix(zeros(3, 3))
ans = logical
1
ismatrix(zeros(2, 3, 4))
ans = logical
0

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Weitere Antworten (1)

Robin Szeto
Robin Szeto am 30 Mai 2017
All MATLAB variables are multidimensional arrays, no matter what type of data. A matrix is a two-dimensional array often used for linear algebra. source: https://www.mathworks.com/help/matlab/learn_matlab/matrices-and-arrays.html
  2 Kommentare
Stephen23
Stephen23 am 30 Mai 2017
Bearbeitet: Stephen23 am 30 Mai 2017
+1 This is true: all MATLAB array types are N-dimensional, with implicit infinite trailing singleton dimensions, as has been discussed many times before:
"Arrays in MATLAB are N-dimensional, with an infinite number of trailing singleton dimensions."

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