How can I insert a smaller ones matrix into a larger zeros matrix?

Answer 1

[Walter Roberson]

A(starting_row : ending_row, starting_column : ending_column) = constant_to_fill_with * ones(number_of_rows, number_of_columns);

[Trisha Katz]

Hi, I am still getting an error...I entered this code:

A=zeros(6,8)
D=ones(2,2)
A(5:6,1:5)=D(1:2,1:2)

And am getting the following error:

Unable to perform assignment because the size of the left side is

2-by-5 and the size of the right side is 2-by-2.

How can I resolve this?

[Walter Roberson]

A = zeros(6,8)
D = ones(2,5)
A(5:6,1:5) = D

[Trisha Katz]

Awesome, thank you!

Answer 2

[Andrei Bobrov]

AA = [5:12;ones(5,1)*[0 8 8 8 0 5 5 5]]
AA(end-1:end,1:5) = 1;
AA(4,7) = 7;

eq7 = AA == 7;
le7 = AA <= 7;
gt7 = AA > 7;

number_of_values_eq7 = sum(eq7(:))
number_of_values_le7 = sum(le7(:))
number_of_values_gt7 = sum(gt7(:))