help please (error: number of elements must be the same)

There seems to be a problem but I couldn't fix it, if someone could help me I would be much grateful.

The code below gives the following error: ??? In an assignment A(I) = B, the number of elements in B and I must be the same.

Error in ==> aee206demircan at 5

member(i)=[ joints(i,1);joints(i,2) ];

The code :

joints=xlsread('joints.xlsx');
n=size(joints,1);
for i=1,n;
  member(i)=[ joints(i,1);joints(i,2) ];
end
plot3(member(:,1),member(:,2),member(:,3))

Answer 1

[Azzi Abdelmalek]

What do you want to create with this?

member(i)=[ joints(i,1);joints(i,2) ];

Maybe you want

member(1:2,i)=[joints(i,1);joints(i,2) ];

But in this case you can't write

plot3(member(:,1),member(:,2),member(:,3))

Because member is 2xn array

Answer 2

[Image Analyst]

If you want to plot them as x,y,z coordinates, why not try

joints=xlsread('joints.xlsx')
plot3(joints(:,1), joints(:,2), joints(:,3));