I want to read a .txt file. I want to read each of the row from the .txt file except the first element of each row. each of the .txt file need to be converted to a matrix. Please some one suggest how to do it.

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Mouli Sarkar 2021-4-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/799666-i-want-to-read-a-txt-file-i-want-to-read-each-of-the-row-from-the-txt-file-except-the-first-eleme

评论： Rik 2021-4-13

intput 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

Attempted code:

fileID=fopen('topo.txt','r');
formatSpec='%c';
A=fscanf(fileID,formatSpec);
disp(A);
[m, n] = size(A);
for i = 1:m
    vec{i} = A(i, :);
    B{i}=reshape(vec{i},3,3);
    
    disp("rows");
    disp(vec{i});
    disp("matrix");
    disp(B{i});
end;

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Mouli Sarkar 2021-4-13

sir I need for help.

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?