I have made several matrics where I tried to read a txt file. I want to perform the below problem I have mentioned. Help is required.

Suppose I have a circuit like this below image

here A is activating B and B is activating C.

For this circuit Matrix be like

source node

A B C

-------------------------------------------

A | 0 0 0

Target B | 1 0 0

node C | 0 1 0

That means j th elements are controling i th elements. If A is activating B then there is 1. If A was inhibiting B there will be -1 in the matrix. And the type of the link for inhibition would be like this ---| .

In the above code upto this matrix formation is done.

I want to creat separate .topo file for seperate matrics should be store in separate folder according to there number. And the text file should be in this format I am mentioning below.

Source Target Type

A B 1

B C 1

1 signifies activation

2 signifies inactivation

how can do this part of coding?

Attemped code:

----------------------------

A=readtable('topo.txt')
for iter=1:size(A,1)
    vec(:,:,iter)=[A{iter,2:4};A{iter,5:7};A{iter,8:10}];
      
end
disp(vec);

Input text file:

1,0,-1,-1,0,0,-1,0,0,0
2,0,-1,-1,0,0,0,0,0,0
3,0,-1,-1,0,0,0,0,1,0
4,0,-1,0,0,0,-1,-1,0,0
5,0,-1,0,0,0,-1,0,0,0
6,0,-1,0,0,0,-1,1,0,0
7,0,-1,0,0,0,0,-1,1,0
8,0,-1,0,0,0,0,0,-1,0
9,0,-1,0,0,0,0,0,1,0
10,0,-1,0,0,0,0,1,-1,0
11,0,-1,0,0,0,0,1,0,0
12,0,-1,0,0,0,0,1,1,0
13,0,-1,0,0,0,1,0,0,0
14,0,-1,0,0,0,1,1,0,0
15,0,-1,1,0,0,0,0,0,0
16,0,-1,1,0,0,0,0,1,0
17,0,-1,1,0,0,1,0,0,0
18,0,0,0,0,0,0,1,1,0
19,0,0,0,0,0,1,1,0,0
20,0,0,0,1,0,0,1,0,0
21,0,0,0,1,0,0,1,1,0
22,0,0,1,1,0,0,0,1,0

[Walter Roberson]

1,0,-1,-1,0,0,-1,0,0,0
2,0,-1,-1,0,0,0,0,0,0

If I understand that correctly, the first line says that line 1, B inhibits A and C inhibits A, B inhibits C; and the second line says Line 2, B inhibits A and C inhibits A.

If I undestand correctly, that should lead to output

  Source         Target        Type
    B                    A                2
    C                    A                2
    C                    B                2
    
  Source         Target        Type
    B                    A                2
    C                    A                2

Is that correct? Is that all there is to it?

Answer 1

[Shadaab Siddiqie]

From my understanding you want to find the index of the matrix with source and target nodes which follows certain condition (for example: there value is 1). Here is an example to show how you can you find() function to get the index of a matrix with certain condition and get the nodes values.

>> M = [0 1 0; 1 0 0; 0 0 1]; % source and target matrix
>> m1 = ["A" "B" "C"]; % maping the names of nodes
>> [row,col] = find(M==1); % get all index with i->j

>> m1(row)
ans = 
  1×3 string array
    "B"    "A"    "C"
>> m1(col)
ans = 
  1×3 string array
    "A"    "B"    "C"