Change [ ] cells in .mat file to NaN

I need help with writing a script that will change the '[ ]' cells to 'NaN' in a .mat file I am working with that is a 1x30 matrix.

The code below does not work:

clear
load('Some_file.mat')

for i = 1:size(Some_file.xyz)
    if strcmp(Some_file.xyz,'[ ]')
        RSome_file.xyz = NaN;
    end
end

[per isakson]

To start replace

strcmp(Some_file.xyz,'[ ]')

by

isempty(Some_file.xyz)

[University Student]

Still it is not finding the '[ ]' in the .mat file

[Rik]

Do your cell elements contain the char array '[ ]', or are they only being displayed as such? Please attach the cell array in a mat file.

Answer 1

[Tesfaye Girma]

strcmp(Some_file.xyz,'[ ]')

[University Student]

That is the same thing I wrote

Answer 2

[per isakson]

I don't fully understand your question.

• See: TUTORIAL: how to ask a question (on Answers) and get a fast answer
• "The code below does not work:" What does it? Does it throw an error? If so, what error message?
• "a 1x30 matrix" cannot contain empty cells (/elements). I interpret '[ ]' as a symbol for empty.
• Some_file.xyz looks like a structure with a field. Where does it come from?
• etc.

An example to help me figure out:

>> clearvars
>> a = 1;
>> xyz = [];
>> vec = ones(1,30);
>> save('Some_file.mat')
>> clearvars
>> load('Some_file.mat')
>> whos
  Name      Size            Bytes  Class     Attributes
  a         1x1                 8  double              
  vec       1x30              240  double              
  xyz       0x0                 0  double