www.gusucode.com > matlab 案例源码 matlab代码程序 > matlab/DetermineSizeofVariablesExample.m
%% Determine Size of Variables % Determine the size of a variable, and then calculate the average of each % column. %% % Open the example MAT-file, |stocks.mat|. filename = 'stocks.mat'; m = matfile(filename); %% % Determine the size of the variable, |stocks|, in |stocks.mat|. [nrows,ncols] = size(m,'stocks'); %% % Compute the average of each column of the variable |stocks|. avgs = zeros(1,ncols); for i = 1:ncols avgs(i) = mean(m.stocks(:,i)); end