你可以使用像RAND和RANDI这样的函数来执行这些操作。例如:nCols = randi([10 20]); %# A random integer between 10 and 20 nRows = nCols*50; %# Number of rows is a multiple of number of columns mat = rand(nRows,nCols); %# A matrix of random values between 0 and 1