mxGetNumberOfElements returns the number of elements in the specified mxArray, returned as size_t.
The result indicates that only about 2% of the elements in the matrix are nonzero. Input Arguments collapse all Input matrix. Data Types:single|double|int8|int16|int32|int64|uint8|uint16|uint32|uint64|logical|duration|calendarDuration
Get the elements on the main diagonal of a random 6-by-6 matrix. A = randi(10,6) A =6×69 3 10 8 7 8 10 6 5 10 8 1 2 10 9 7 8 3 10 10 2 1 4 1 7 2 5 9 7 1 1 10 10 10 2 9 x = diag(A) x =6×19 6 9 1 7 9 ...
In the following syntax, we use the variabletotalas an accumulator. Thenumel(matrix)function helps us find the total number of matrix elements. Ourforloop iterates through each element, accessed withmatrix(i), and adds them tototalto calculate the sum. This approach ensures efficient and concis...
Get the elements on the main diagonal of a random 6-by-6 matrix. A = randi(10,6) A =6×69 3 10 8 7 8 10 6 5 10 8 1 2 10 9 7 8 3 10 10 2 1 4 1 7 2 5 9 7 1 1 10 10 10 2 9 x = diag(A) x =6×19 6 9 1 7 9 ...
I'm Writing a function called `large_elements` that takes input an array named `X` that is a matrix or a vector. The function identifies those elements of `X` that are greater than the sum of their two indexes. For example, if the element `X(2,3...
I have a matrix W=[1 3 4 1 1 2 3 1 1 2 4 1] and I want to get the values of another matrix C=[0 3 7 8 3 0 1 4 7 1 0 2 8 4 2 0]. That is, I want to take firstly the values of C which exist in (1,3) position, (3,...
ans i, j:复数 Inf:∞ eps:2.2204e-016 NaN:not a number pi x = 1/0 x = log(0) x = inf / inf 那些字是keyword,我们不能用来作为变量名? iskeyword Matlab调用优先级 variable built-in function subfunction private function mex-file p-file m-file ...
Enter help funname (function name) to get help information about the function. #03 Matlab基础界面介绍 Matlab basic interface introduction 1.Matlab的基础界面 The basic interface of Matlab 1)菜单工具栏 2)文件目录 3)命令窗口:交互式地控制Matlab。比如,简单计算,函数命令测试等。
Matlab是一个交互式的系统,它的基本运算单元是不需指定维数的矩阵,按照IEEE的数值计算标准(能正确处理无穷数Inf(Infinity)、无定义数NaN(not-a-number)及其运算)进行计算.系统提供了大量的矩阵及其它运算函数,可以方便地进行一些很复杂的计算,而且运算效率极高.Matlab命令和数学中的符号、公式非常接近,可读性强,容易...