How to add values into rows of cell array?

Currently I have a cell array that has around about 6 entries that are each a matrices

What I want to do is add values into rows 2,3,4 for each column, how would I go about doing this?

Any help is appreciated :)

[Voss]

"rows 2,3,4"

There are only 3 rows in each matrix.

[David Hill]

What values do you want to add?

[Jon]

So you want to add a row vector to an existing row in each of the matrices in the cell array?

Are you adding the same row vector to every matrix, or is it a different one for each matrix?

[Titus Priscu]

so what I want to do is add values to the second row of cell array and not affect any of the matrices in the first row. Esentially what Im doing is im going to add coordinates in rows 2,3,4 for the matrices in row 1.

[David Hill]

Hard to understand. A simple example would be a great help.

[Titus Priscu]

ok so what I am doing is taking some pictures from an ultrasound and the data is kept as a matrix in the first row ( the 3x18 doubles). Each cell in the row corresponds to 1 picture. so I have 6 pictures and now what i want to do is add to the cell array each pictures coordinates (x,y,z) with the 2nd row being x, 3rd row being y and 4th row being z. What Im having trouble doing is making a program to the coordinates into the cell array. To show what I want I made a basic drawing in excel in the image below. The red values are arbitrary at the moment and what I want to be able to do is just manually put values into the cell aray in rows 2,3,4 where the red numbers are. Hope this helps explain what im looking for, thanks again for all the help.

Answer 1

[David Hill]

Assuming the values to be added are in a matrix (3x6)

for k=1:6
   yourCell{k}=randi(256,3,18)-1;%populate yourCell
end
valueAdded=randi(100,3,6);%populate x,y,z values to add

newCell=cell(4,6);
newCell(1:4:end)=yourCell;
for k=1:6
  for m=2:4
    newCell{4*(k-1)+m}=valueAdded(m-1,k);
  end
end