Connect line using add_line command to same port connections

Question

Tommy 2025-4-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2175865-connect-line-using-add_line-command-to-same-port-connections

评论： Tommy 2025-4-15

在 MATLAB Online 中打开

While I tried to collect lines in paralel, an error popup:

>> Battery_Array_tmp

Error using Battery_Array_tmp (line 33)

The first port already has a line connection

        %%% connect minus to plus ports:
        if v>1
            add_line(mdl,PH_Add_MC_cube{v-1,i}.LConn(2),PH_Add_MC_cube{v,i}.LConn(2),'Autorouting','on');
        end

Can someone assist to solve it?

I adding part of rellevant script:

%%%% Scriptto creat top design - withot Batteries/
%%%% only to speedup simulation time during debug Block connections 
open_system('Battery_arc_tmp')
mdl = 'Battery_arc_tmp';
battery_model = find_system(mdl,'FindAll','on','Name','Battery_arc_tmp');
numRows = 3;
% Get handle to existing (external) POS and NEG ports
Plus_MC = find_system(mdl,'LookUnderMasks','All','FindAll','on','Name','POS');
Minus_MC = find_system(mdl,'LookUnderMasks','All','FindAll','on','Name','NEG');
%%% add MC_cube - basic String_unit:
for i=1:2          %% set two columns
    colPos = 500;  %% spaces between columns
    for v=1:numRows     %% loop for 5 String per column
        nl=num2str(v + numRows*(i-1));
        if i==1
            % Add_MC_cube(v) = add_block('MC_Cube/STRING_MC_Cube 1', [mdl,'/STRING_MC_Cube  ',nl]);
            % % % % % % MC_TMP empty Submodule - only for quick compilation....
            Add_MC_cube(v) = add_block('MC_TMP/STRING_MC_Cube 1', [mdl,'/STRING_MC_Cube  ',nl]);
        else
            % Add_MC_cube(v) = add_block('MC_Cube2/STRING_MC_Cube 1', [mdl,'/STRING_MC_Cube  ',nl]);
            % % % % % % MC_TMP empty Submodule - only for quick compilation....
            Add_MC_cube(v) = add_block('MC_TMP2/STRING_MC_Cube 1', [mdl,'/STRING_MC_Cube  ',nl]);
        end
        
        posc = get(Add_MC_cube(v),'Position');
        set(Add_MC_cube(v),'Position',posc + [100+(i-1)*colPos 100*(v-1)+45 100+(i-1)*colPos 100*(v-1)+45])
        PH_Add_MC_cube{v,i}=get(Add_MC_cube(v),'PortHandles');
        
        %%% connect minus to plus ports:
        if v>1
            add_line(mdl,PH_Add_MC_cube{v-1,i}.LConn(2),PH_Add_MC_cube{v,i}.LConn(2),'Autorouting','on');
        end
    end
end

while connecting 2 module there is no problem/

But when increase above 2 module i gos an error message (above)..

please, see pic attached...

Thank for assist.

Tommy

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Tommy 2025-4-5

编辑：Tommy 2025-4-5

Hi @Altaïr,

Can you assist on my last issue above? (connecting lines to same port)

Could not fined a way to solve it...

Thanks,

Tommy

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Answer 1

Altaïr 2025-4-14

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2175865-connect-line-using-add_line-command-to-same-port-connections#answer_1563597

在 MATLAB Online 中打开

Hi @Tommy,

You're on the right track. Here are a couple of points to consider from the approach being used. The current script connects only the second connection ports of blocks in a given column:

%%% connect minus to plus ports:
if v>1
    add_line(mdl,PH_Add_MC_cube{v-1,i}.LConn(2),PH_Add_MC_cube{v,i}.LConn(2),'Autorouting','on');
end

To improve this, replace it with the following lines to connect the first connection ports into one group and the second connection ports into another group:

%%% connect minus and plus ports into two groups:
if v>1
    add_line(mdl,PH_Add_MC_cube{v-1,i}.LConn(1),PH_Add_MC_cube{v,i}.LConn(1),'Autorouting','smart');
    add_line(mdl,PH_Add_MC_cube{v-1,i}.LConn(2),PH_Add_MC_cube{v,i}.LConn(2),'Autorouting','smart');
end

Setting 'Autorouting' to smart helps in better routing of the lines. To connect these groups to the external port, simply add a connection from the external ports to the first port of each column using the lines below:

% connect the external NEG port to NEG port of STRING_MC_Cube at (ro1,col)=(1,1):
PH_Minus_MC=get(Minus_MC,'PortHandles');
add_line(mdl,PH_Minus_MC.RConn,PH_Add_MC_cube{1,1}.LConn(1), 'Autorouting','smart');
% connect the external POS port to POS port of STRING_MC_Cube at (ro1,col)=(1,2):
PH_Plus_MC=get(Plus_MC,'PortHandles');
add_line(mdl,PH_Plus_MC.RConn,PH_Add_MC_cube{1,2}.LConn(1), 'Autorouting','smart');

This approach aligns with the response to another query for consistency:

https://www.mathworks.com/matlabcentral/answers/2174885-add_line-connection-for-to-column-cells#answer_1562177

The resulting model should match expectations. I hope this meets your need!

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Tommy 2025-4-15

在 MATLAB Online 中打开

sure,

%%%% Scriptto creat top design - withot Batteries/
%%%% only to speedup simulation time during debug Block connections 
open_system('Battery_arc_tmp')
mdl = 'Battery_arc_tmp';
battery_model = find_system(mdl,'FindAll','on','Name','Battery_arc_tmp');
numRows = 3;
% Get handle to existing (external) POS and NEG ports
Plus_MC = find_system(mdl,'LookUnderMasks','All','FindAll','on','Name','POS');
Minus_MC = find_system(mdl,'LookUnderMasks','All','FindAll','on','Name','NEG');
%%% add MC_cube - basic String_unit:
for i=1:2          %% set two columns
    colPos = 500;  %% spaces between columns
    for v=1:numRows     %% loop for 5 String per column
        nl=num2str(v + numRows*(i-1));
        if i==1
            % Add_MC_cube(v) = add_block('MC_Cube/STRING_MC_Cube 1', [mdl,'/STRING_MC_Cube  ',nl]);
            % % % % % % MC_TMP empty Submodule - only for quick compilation....
            Add_MC_cube(v) = add_block('MC_TMP/STRING_MC_Cube 1', [mdl,'/STRING_MC_Cube  ',nl]);
        else
            % Add_MC_cube(v) = add_block('MC_Cube2/STRING_MC_Cube 1', [mdl,'/STRING_MC_Cube  ',nl]);
            % % % % % % MC_TMP empty Submodule - only for quick compilation....
            Add_MC_cube(v) = add_block('MC_TMP2/STRING_MC_Cube 1', [mdl,'/STRING_MC_Cube  ',nl]);
        end
        
        posc = get(Add_MC_cube(v),'Position');
        set(Add_MC_cube(v),'Position',posc + [100+(i-1)*colPos 100*(v-1)+45 100+(i-1)*colPos 100*(v-1)+45])
        PH_Add_MC_cube{v,i}=get(Add_MC_cube(v),'PortHandles');
        
        %%% connect minus to plus ports:
        if v>1
            % add_line(mdl,PH_Add_MC_cube{v-1,i}.LConn(2),PH_Add_MC_cube{v,i}.LConn(2),'Autorouting','smart');
              add_line(mdl,PH_Add_MC_cube{v-1,i}.LConn(1),PH_Add_MC_cube{v,i}.LConn(1),'Autorouting','smart');
              add_line(mdl,PH_Add_MC_cube{v-1,i}.LConn(2),PH_Add_MC_cube{v,i}.LConn(2),'Autorouting','smart');
        end
    end
end
% connect the external NEG port to NEG port of STRING_MC_Cube at (ro1,col)=(1,1):
PH_Minus_MC=get(Minus_MC,'PortHandles');
add_line(mdl,PH_Minus_MC.RConn,PH_Add_MC_cube{1,1}.LConn(1), 'Autorouting','smart');
% connect the external POS port to POS port of STRING_MC_Cube at (ro1,col)=(1,2):
PH_Plus_MC=get(Plus_MC,'PortHandles');
add_line(mdl,PH_Plus_MC.RConn,PH_Add_MC_cube{1,2}.LConn(1), 'Autorouting','smart');

Altaïr 2025-4-15

编辑：Altaïr 2025-4-15

I am unable to make the specified connection manually too, using the shared models. The issue seems to occur when 'STRING_MC_Cube 1' in 'MC_TMP' and 'MC_TMP2' is empty. Could you try running the script after filling 'STRING_MC_Cube 1' with its contents?

Tommy 2025-4-15

Hi,

Great, you are right !

I just connect a simple battery (connecting + and - ports) and it works.

I wonder why connection lines are not perfect simectrical (left and right side).....;-)

preciate your help a lot

Thanks a lot

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Connect line using add_line command to same port connections

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Connect line using add_line command to same port connections

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