Exporting matrix as .txt file

Hello,

I am trying to export the 189x12 matrix "newMatrix" from the following code as an ASCII .txt file with headers. The export works until the 20th row but the remaining rows are unsorted.

clear all
clc

A1 = importdata('Particles.txt');
A2 = importdata('Fragments.txt');
ID_Particles = A1(:,2);
MID_Fragments = A2(:,6);
CooParticles = A1(:,9:11);
ID_Fragments = A2(:,1);
Duration = A2(:,2);
Coo_Fragments = A2(:,3:5);
Mother_ID = A2(:,6);
Generation = A2(:,7);

x = size(A2,1);
newMatrix=zeros(size(A2,1),12);
newMatrix(:,1)=A2(:,1);
for k=1:length(ID_Particles)
    a=MID_Fragments==ID_Particles(k);
    newMatrix(a,2:4)=repmat(CooParticles(k,:),nnz(a),1);
end

newMatrix(:,5) = Duration;
newMatrix(:,6:8) = Coo_Fragments;
newMatrix(:,9) = Mother_ID;
newMatrix(:,10) = Generation;

fileID = fopen('Coordinates.txt');
fprintf(fileID,'%8s    %10s    %10s    %10s    %10s    %10s    %10s    %10s    %10s    %10s\r\n' ,'header1','header1','header1','header1','header1','header1','header1','header1','header1','header1');
fprintf(fileID,'%3d\r %4.8e %4.8e %4.8e %12.8f %12.8f %12.8f %12.8f %12.8f %12.8f\r\n',newMatrix);
fclose(fileID);

Does anyone have an idea how to solve this problem?

All required files are attached.

[Mario Malic]

See command readtable

Answer 1

[Cris LaPierre]

The best approach would be to define a variable for each format specified in your fprintf statement. Without it, MATLAB, which is column-major ordered by default, will populate the fields marching down the rows of the first column first, then move to the second, etc. Keep in mind that newmatix is 189x12, but you only have 10 fields. You'll need to transpose newMatrix:

fprintf(fileID,'%3d\r %4.8e %4.8e %4.8e %12.8f %12.8f %12.8f %12.8f %12.8f %12.8f\r\n',newMatrix(:,1:10)');

The remaining issues are related to how you have coded the creation of newMatrix. Since I'm not sure what it is you are trying to do, I suggest you take a look at what each line is doing an check that it is what you want.