How to extract a column from a matrix by searching. Learn more about matlab, matrix, vector MATLAB
답변:Walter Roberson2018년 3월 25일 채택된 답변:Walter Roberson Suppose I have a matrix A and suppose I want to create a new matrix from 1st, 3rd, and 4th column of A. Is there any compact way to do this?
테마복사 idx = ismember(a,b,'rows'); I didn't notice its the index, I expected to get the index of the column in the matrix as a number of the column. many thanks, regards, 댓글을 달려면 로그인하십시오.추...
RequiredColumn=matrix1(1:end, 2); As you can see, in the first part of matrix1, I ask MATLAB to recall all the rows; from first row to the last row. In the second part, I ask MATLAB to only extract data from the second column. (You might need to use matrix1(2:end,2). ...
iscolumn(x)、isrow(x) 判断是否为列向量、行向量 isvector()、ismatrix() 判断是否为向量、矩阵 isempty(x)、isscalar() 判断是否为空向量、单个数值 A = [1]; U = repmat(A, 2, 3); % 结果 U = [1 1 1 1 1 1] repmat(A, 1, 2) % [1, 1] repmat(A, 2, 1) % [1; 1] ...
在matlab创建一个字符串“Iamastudent”将字符串全变成大写字母是用s = 'AaeF'upper(s)转换的,拆分截取出用a=textreadMATLAB是美国MathWorks公司出品的商业数学软件,用于数据分析、无线通信、深度学习、图像处理与计算机觉、信号处理、量化金融与风险管理、机器人,控制系统等领域。MATLAB是matrix&laboratory ...
本技术支持指南主要处理:ASCII, binary, and MAT files.要得到MATLAB中可用来读写各种文件格式的完全函数列表,可以键入以下命令:help iofunMATLAB中有两种文件IO程序:high level and
We are not restricted to just adding one column or one row. Let us take the current E (which is 6 × 5) and turn it into a 6 × 7 matrix will all ones in the lasttwo columns. We do: E(:,[6 7]) = 1; 2. Extracting a submatrix and combining matrics: Here we extract part...
you will calculate the eigenvalues of a matrix by using various methods andfunctions one of the functions, quer, was created earlier in Exercise 4 of Project 3, and theother functions will be MATLAB built-in functions.NOTE: The function quer from Project 3 can be used for approximating eigenv...
% Matrix manipulation. % cat - Concatenate arrays. % reshape - Reshape array. % diag - Diagonal matrices and diagonals of matrix. % blkdiag - Block diagonal concatenation. % tril - Extract lower triangular part. % triu - Extract upper triangular part. ...