比如图片
去掉2、3两行
如果你是想手动删除,那么假设你的矩阵名是A,那么输入
A(3,:)=[];
A(2,:)=[];
如果你是想自动删除,那么
A=[1,6,9,0,0,0,0;2,4,6,9,1,0,0;1,6,9,0,0,0,0;2,4,6,9,0,0,0];
[r,c]=size(A);
m=0;
for i = 1:r
t=0;
for j=1:c
if A(i,j)~=0
t = t + 1;
end
end
row(i)=t;
if t>m
m=t;
end
end
for i=r:-1:1
if row(i)==m
A(i,:)=[];
end
end
大于3都删除的版本
A=[1,6,9,0,0,0,0;2,4,6,9,1,0,0;1,6,9,0,0,0,0;2,4,6,9,0,0,0];
[r,c]=size(A);
m=3; %如果大于3
for i = 1:r
t=0;
for j=1:c
if A(i,j)~=0
t = t + 1;
end
end
row(i)=t;
end
for i=r:-1:1
if row(i)>m
A(i,:)=[];
end
end