How to overcome array problem?

Hi everyone,

I would to extract each cycle and append it all. Since my coding works manually as I have to keep change the number of j=2, run, j=3, then run again. Could you help me sir if possible? if I put j=2:354, there will be an error at Dist1=d1km. My coding as shown below. Can anyone help me to solve this?

clc;clear all;close all;

% Input matrix
A = dlmread('Ntxp0014.txt'); 
% Identify and extract each row according to cycle
V = 11:364;
F = @(n) A(A(:,5)==n,:);
C = arrayfun(F,V,'UniformOutput',false);
% Reference LatLon of Cycle 11 
ref_latC1 = C{1}(:,2);
ref_lonC1 = C{1}(:,3);
latlon1 = [ref_latC1 ref_lonC1];
% LatLon of Cycle 12 to 364 
for j=22   %2-354 <-I have to run one by one 
  obs_latC2 = C{j}(:,2);
  obs_lonC2 = C{j}(:,3);
  latlon2 = [obs_latC2 obs_lonC2];
  %Extract minimum distance point by point
  for k= 1:length(latlon2)
    [d1km(k)]=lldistkm(latlon1(1,:),latlon2(k,:));
    Dist1 = d1km';
  end
  B2 = [C{j} Dist1];
  ind2=B2(:,7)== min(B2(:,7));
  B2 = B2(ind2,:);
  %Append the data with ref point
  %Append1 = [C{1}(1,:) 0 ; B2]      %<-run this for j=2 only
  Append1 = [B2]                     %<-run this for j=3...354
  fid = fopen('txp0014_pt1.txt','a');
  fprintf(fid,'%17.2f \t %.6f \t %.6f \t %.3f \t %.0f \t %.0f \t %.4f\n',Append1.');
  fclose(fid);
end

[darova]

Where is the data?

[hanif hamden]

Sorry I forgot to attach my data. Here is the data.

[darova]

Can you please explain more: what are you trying to do and what is the problem?

[Stephen23]

Original question:

https://www.mathworks.com/matlabcentral/answers/500880-how-to-solve-pre-allocating-array