如果没有购买 Matlab,可以下载开源软件 Octave 和 Scilab,它们的语法和 Matlab 基本一致。 一、基本概念 X = [2, 1, 0; 1, 3, 5] % 定义2*3 矩阵 matrix (复数 matrices) X = 2 1 0 1 3 5 size(X) % 测量矩阵的行列数目(行 row,列 column) ans = 2 3 X(1,2) % 矩阵的项X_ij,其中...
c = lines returns the lines colormap as a three-column array with the same number of rows as the colormap for the current figure (gcf). If no figure exists, then the array contains 256 rows. Each row in the array contains the red, green, and blue intensities for a specific color. ...
Description c = linesreturns the lines colormap as a three-column array with the same number of rows as the colormap for the current figure (gcf). If no figure exists, then the array contains 256 rows. Each row in the array contains the red, green, and blue intensities for a specific...
11 12];B = A(2, 3) = 5;Linear Indexing.In addition to row and column indexing, MATLAB also supports linear indexing. Linear indexing treats the matrix as a one-dimensional array, andelements are accessed using a single index. The linear index is calculated using the following formula:
IfAis a matrix, thenmean(A)returns a row vector containing the mean of each column. IfAis a multidimensional array, thenmean(A)operates along the first array dimension whose size does not equal 1, treating the elements as vectors. The size ofMin this dimension becomes1, while the sizes of...
Data Types:double Tips To determine if an array is empty, a scalar, or a matrix, use the functionsisempty,isscalar, andismatrix. You can also determine the orientation of a vector with theisrowandiscolumnfunctions. Extended Capabilities ...
% row-normalize W W=normw(W1); % function of LeSage y=A(:,[3]); % column number in the data matrix that corresponds to the dependent variable x=A(:,[4,5,6]); % column numbers in the data matrix that correspond to the independent variables ...
区分vector与matrix:vector指向量,matrix指矩阵,而array则是两者的统称。 ,和空格用来间隔列column,;用来间隔行row a=[123];%这是一个行向量b=[4,5,6];%这也是一个行向量c=[7;8;9];%这是一个列向量 向量乘法 行向量乘列向量结果是一个数,而列向量乘行向量结果是一个矩阵: ...
这两天在看句柄式图形方面的东西,以下是我在看书过程中整理的学习笔记,比较详细的介绍了句柄以及与其密切相关的各种图形对象和它们的属性。希望能对初学Matlab界面设计的朋友们有所帮助。 GUI学习笔记: 句柄式图形常用函数: (1)get(h)返回句柄值h所指定的图形对象的所有属性名称与相对应的属性值 ...
表示每个单元格的宽度,若选择NA则表示适应窗口 cellheight 表示每个单元格的高度,若选择NA则表示适应窗口 scale 表示值均一化的方向,或者按照行或列,或者没有,值可以是"row", “column” 或者"none" cluster_rows 表示进行行的聚类,值可以是FALSE或TRUE cluster_cols 表示进行列的聚类,值可以是FALSE或TRUE tree...