Adding a subsystem using an m file

I am using the following code to create a simulink model via text:

%%Test model for learning how to build simulink models in script
%Clean up
clear;
clc;
%%open the model
sys = 'testModel';
delete('testModel.mdl')
new_system(sys) % Create the model
open_system(sys) % Open the model
%%Place blocks
pos1 = [0 0 30 30];
pos2 = [80 0 120 30];
offset = [0 60 0 60];

for i = 1:10;
add_block('built-in/Constant',[sys strcat('/Constant',num2str(i))],'Value','7','Position',pos1);
add_block('built-in/gain',[sys strcat('/gain',num2str(i))], 'Gain','3','Position',pos2);
%Connect blocks
add_line(sys,strcat('Constant',num2str(i),'/1'),strcat('gain',num2str(i),'/1'),'autorouting','on')
pos1=pos1+offset;
pos2=pos2+offset;
end
add_block('built-in/Subsystem','/Subsystem1')
% blocks = find_system(sys, 'SearchDepth', 1);
%   bh = cell(length(blocks),1);
%   for i = 2:length(blocks)
%     bh = [bh get_param(blocks{i}, 'handle')];
%   end
%   Simulink.BlockDiagram.createSubSystem(bh);

%%Save and close system
pause %hit enter to continue
save_system(sys)
close_system(sys)

I want to place all of the blocks I just created into a subsystem, is it possible to do this with add_block command?

Answer 1

[Fangjun Jiang]

You can do that. The easiest way to do is to add your Subsystem block first.

add_block('built-in/Subsystem','/Subsystem1')

And then add all the other blocks you want by specifying the destination.

add_block('built-in/Constant','/Subsystem1/MyConstant')

[Michael Joslin]

If I put add_block('built-in/Subsystem','/Subsystem1') just before my loop where all of my blocks are made I get the following error:

??? Error using ==> modelfromscript at 14

A new block named '/Subsystem1' cannot be added.

[Arnaud Miege]

Try:

add_block('built-in/Subsystem','Subsystem1')

Arnaud

[Michael Joslin]

I got it.

add_block('built-in/Subsystem',[sys '/Subsystem1'])

I forgot the sys in the brackets.

Answer 2

[Paulo Silva]

Simulink.BlockDiagram.createSubSystem(blocks)

Simulink.BlockDiagram.createSubSystem

[Michael Joslin]

I already have a section of code in my question that performs this. My question was how to add a subsystem and populate it using add_block.