read files and check if something is number

i try to read files line by line

the files are like that : Strength: 438439

B: 489893

C: nothing

D: 832

i want to read the file and as a result i'd like to have Strength=438439 etc. and if i find something that is not a number (like the variable C) an error must appear

how do i check this?

Answer 1

[Mathieu NOE]

hello see the different options in code below

my prefered one is the second

a=readcell('test.txt',"Delimiter",":");

% % option 1 : create a structure : 
% for ci = 1:size(a,1)
%     Varnames{ci} = matlab.lang.makeValidName(a{ci,1});
%     myStruct.(Varnames{ci}) = a{ci,2};
% end

% option 2 using assignin (in function variableCreator) : 
for ci = 1:size(a,1)
    % change blanks in variable names to underscore (otherwise
    % variableCreator will throw an error mesage
    str = strrep(a{ci,1}, ' ', '_');
    val = a{ci,2};
    if ischar(val)
        disp(['error : non numeric data in line : ' int2str(ci)]);
        val = NaN;
    end
    variableCreator ( str, val )
    
end
clear str val a ci

% option 3 creating a table - one line engine !  

% T = array2table(a)

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

 function variableCreator ( newVar, variable )
   assignin ( 'caller', newVar, variable );
 end