Matlab怎样合并两个矩阵（怎样合并多个矩阵）为一个矩阵

1.合并两个矩阵

a = [1 2 3;4 5 6]
b = [7 8 9;1 2 3]
c = [a,b]  %按行（横向）合并
c = [a;b]  %按列（纵向）合并

2.合并多个矩阵

clc
clear
temp = dir(['D:\文件夹\','*.txt']);
N = length(temp);

for i = 1:N    %先读取文件内所有文件      
    data = load(temp(i).name);
    s = ['a' int2str(i) '=data;'];
    eval(s);
end

data_merger_all = {};  %将所有读取的文件放到一个胞元数组中
for j = 1:N
    s = ['a' int2str(j)];
    data_merger = eval(s);
    data_merger_all{j,1} = data_merger;
end

data_end = [];  %读取胞元数组数据并进行合并数据操作
for m = 1:2:N-1
    n = m + 1;
    data1 = data_merger_all{m,1};
    data2 = data_merger_all{n,1};
    data_end1 = [data1;data2];
    data_end = [data_end;data_end1]; %data_end 就是合并之后的数据
end
data_end = [data_end;data_merger_all{N,1}]; %如果N是奇数则需要再加一下这个代码，因为前面N-1及m+1最多只能到偶数
w = "ok"