matlab路径(string)操作及基本data读取保存

最新推荐文章于 2024-05-15 13:39:40 发布

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最新推荐文章于 2024-05-15 13:39:40 发布 · 3.2k 阅读

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CC 4.0 BY-SA版权

本文详细介绍了MATLAB中如何构建矩阵、保存与加载数据、字符串操作以及基本的数据处理方法，包括使用save和load函数、fprintf和disp显示信息、字符串拼接与替换、文件路径操作等，并通过实例展示了如何处理二维矩阵和一维向量的数据统计分析。

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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 1 ## build a matrix; Why is matrix ?
    % one student
studentScores = [90 99 98 85];% gammar math english moral
rates         = [0.3 0.3 0.3 0.1];
jiDian        = studentScores * rates';

    % many students
studentScores = [90 99 98 85 % good style; a line with ';' is ok
                 80 70 59 90
                 72 89 65 99];% gammar math english moral
             
rates = [0.3 0.3 0.3 0.1];
jiDians = studentScores * rates';

    % size whos double() uint8() char() 
size(studentScores);
whos('studentScores');

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 2 ## save : save()
    % save studentScores and jiDians in ScoresOfClass1.mat
save('ScoresOfClass1.mat', 'studentScores', 'jiDians');

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 3 ## load : load() sprinf() disp() fopen() fprintf()
Scores = load('ScoresOfClass1.mat', 'studentScores');
Sco