how to correct the error in the datetime?

Hi all,

I wrote the following script to extract some data from the list of files. The date time matrix is still shown some errors that I want to have it as double array, could anyone help me how to correct it?

Thank you so much.

 a   = dir('*.tuv'); %counting the number of profiles
 b   = length(a);

 % creat NaNs matrix to import the extracted data
   time = ones(978,length(b)) * NaN; %this is the error
   tG   = ones(978,length(b)) * NaN;
   U    = ones(978,length(b)) * NaN;
    V   = ones(978,length(b)) * NaN;

for i = 1:numel(a);
  c = load(a(i).name);
  hh=tuv2hfrc(a(i).name); %the related files that needs in the time extraction
  time(1:m,i) = {[hh.matlab_time]}; % this as well
  [m n] = size(c);
  lat1  = c(:,1);lon1 = c(:,2);u = c(:,3);v = c(:,4);
  Lat(1:m,i) = lat1;Lon(1:m,i) = lon1;U(1:m,i) = u;V(1:m,i) =v;   
end

[Jose Marques]

Can you explain how the errors occurs ?

Answer 1

[Walter Roberson]

You have

   time = ones(978,length(b)) * NaN; %this is the error

so you initialize time as being a numeric array. However, you later have

    time(1:m,i) = {[hh.matlab_time]}; % this as well

so you are trying to store a cell array into a numeric slot.

Also notice that you have

   b   = length(a);

so b is a scalar that contains the length of a. and you have

     time = ones(978,length(b)) * NaN; %this is the error

but with b being a scalar, length(b) is certain to be 1, suggesting that you have miscoded here. Perhaps you wanted

     time = ones(978,b) * NaN;

or more simply

     time = nan(978,b);

[Lilya]

Thank you so much, Walter. Your clarifications are always the best.

If that possible, can I ask you another question?

[Walter Roberson]

Start a new Question

[Lilya]

Done.