The error regarding 'is_dyn'

Question

Shukla Das 2022-5-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1718105-the-error-regarding-is_dyn

回答： Maneet Kaur Bagga 2023-9-22

Hello, I am not good at matlab coding. While running a toolbox with my input data I faced errors. To fix my inpu structure I need to understand these lines of the scripts. Do any one have any idea about these code? Why the 'is_dyn' is normally used? Thanks in advance.

FileCont = load (files{i_sub});
            if(~isfield(FileCont,MatrixName))
                error(['The field "' MatrixName '" has not been found: ' ]);
            end
            
            if isfield(FileCont,'is_dyn')
                is_dyn = FileCont.is_dyn;
            else
                is_dyn = 0;
            end
            
            
            if(is_dyn == 1)
                n_dyn = size(FileCont.(MatrixName),2);
            else
                n_dyn = 1;
            end
            
            for i_dyn = 1:n_dyn
                
                if(iscell(MatrixName))
                    MatrixName = MatrixName{:};
                end
                
                
                if(is_dyn)
                    R = FileCont.(MatrixName){i_dyn};
                else
                    R = FileCont.(MatrixName);
                end
                
                del = find(brain==0);
                R(del,:) = [];
                R(:,del) = [];
           

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Maneet Kaur Bagga 2023-9-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1718105-the-error-regarding-is_dyn#answer_1315847

Hi Shukla,

As per my understanding "is_dyn" variable is used to determine whether the input data is considered dynamic or not. The code functions as:

The "load(files{i_sub})" loads the contents of a file specified by the "files{i_sub}" into the "FileCont" structure.
The "if(~isfield(FileCont,MatrixName))" condition checks if the field specified by "MatrixName" exists in "FileCont." If it doesn't, an error is thrown, indicating that the field was not found.
Inside the loop, the condition "if(iscell(MatrixName))" checks if "MatrixName" is a cell array. If it is, "MatrixName" is converted to a string.
The following "if(is_dyn)" condition checks if "is_dyn" is true. If it is, R is assigned the value of "FileCont.(MatrixName){i_dyn}". Otherwise, R is assigned the value of "FileCont.(MatrixName)". Finally, the code removes rows and columns from R where the corresponding indices in the "brain" variable are equal to 0.

Please refer to the MATLAB Documentation for better understanding of the functions used:

load function

https://www.mathworks.com/help/matlab/ref/load.html

isfield function

https://www.mathworks.com/help/matlab/ref/isfield.html

iscell

https://www.mathworks.com/help/matlab/ref/iscell.html

Hope this helps!

Thank You

Maneet Bagga