if rgd{i,j}>maxrgd
                maxrgd=rgd{i,j};
            end
            if rgd{i,j}<minrgd
                minrgd=rgd{i,j};
            end
此程序为啥不行？求解不出正确的最大值与最小值？谢谢

先定义函数文件bijiao.m
function [maxrgd,minrgd]=bijiao(rgd)
[m,n]=size(rgd);
maxrgd=rgd{1,1};minrgd=rgd{1,1};
for i=1:m
    for j=1:n
        if rgd{i,j}>maxrgd
            maxrgd=rgd{i,j};
        end
        if rgd{i,j}<minrgd
            minrgd=rgd{i,j};
        end
    end
end
maxrgd
minrgd
end
再调用函数：bijiao(rgd)