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Programming Fundamentals - The MathWorks - #30

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1 Matrices and Arrays
Function
Description
zeros
Create a matrix or array of all zeros.
eye
Create a matrix with ones on the diagonal and zeros elsewhere.
accumarray
Distribute elements of an input matrix to specified locations in an output matrix, also allowing for accumulation.
diag
Create a diagonal matrix from a vector.
magic
Create a square matrix with rows, columns, and diagonals thatadduptothesamenumber.
rand
Create a matrix or array of uniformly distributed random numbers.
randn
Create a matrix or array of normally distributed random numbers and arrays.
randperm
Create a vector (1-by-n matrix) containing a random permutation of the specified integers.
Most of these functions return matrices of type double (double-precision floating point). However, you can easily build basic arrays of any numeric type using the ones, zeros,and eye functions.
To do this, specify the MATLAB class name as the last argument: A = zeros(4, 6, 'uint32')
A=
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
Examples
Here are some examples of how you can use these functions.
1-6
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