Create parametric block diagonal matrix

how can create parametric block diagonal matrix in Matlab

for i=1:2
    H = blkdiag(sym('H%d',num2str(i),[1 1]));
end

Answer 1

[Star Strider]

See if this does what you want:

h = sym('H%d',[1 2]);                           % Create Vector
h = mat2cell(h, 1, [1 1]);                      % Convert Vector To Cell Array Of Individual Elements (Comma-Separated List)
H = blkdiag(h{:})                               % Desired Result

H =
[ H1,  0]
[  0, H2]

The blkdiag function wants a comma-separated list, and a cell array provides that. This code creates your initial vector (as I believe you want it), then converts it to a cell array, then uses it to create your block-diagonal matrix.

If this is not the result you want, please describe in detail what you want your desired result to be.

[Mehdi Ghasem Moghadam]

Thanks, but I need Block Diagonal matrix like: H = [ H1, 0] [ 0, H2] [ 0, H3]

[Star Strider]

This seems to do what you want:

h = sym('H%d',[1 3]);                           % Create Vector
h = mat2cell(h, 1, [1 2]);                      % Convert To Cell Array
H = blkdiag(h{:}).'                             % Desired Result (Simple — Not Complex Conjugate — Transpose)

H =
[ H1,  0]
[  0, H2]
[  0, H3]