How can I add third column to matrix and plot?

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Ender Rencuzogullari
编辑： Ender Rencuzogullari 2015-12-23
Dear Contributers,
There is loop;
X and Y are row vectors and their size depend on inputs. By the way, the iteration number n and the size of X and Y can be different. As I said, they depend on inputs.
for i=1:n
X_troc_rotate= X.*cos(i*rotation_increment) - Y.*sin(i*rotation_increment);
X_troc_rotateh= X_troc_rotate./cos(deg2rad(helix_angle));
Y_troc_rotate= X.*sin(i*rotation_increment) + Y.*cos(i*rotation_increment);
Helix_Troc = [X_troc_rotateh(1:K1) ; Y_troc_rotate(1:K1)];
fileID = fopen('helix_trochoid.txt','a');
fprintf(fileID,'%f %f\n ', Helix_Troc);
fclose(fileID);
plot(X_troc_rotateh(1:K1), Y_troc_rotate(1:K1),'-r','LineWidth',2)
end
I want to add third axis which is Z into Helix_Troc to get the text file with 3 columns.
Z = face_width / n ;
the coordinates of X_troc_rotateh and Y_troc_rotate have only one Z value for every iteration
%for first iteration (i=1);
X_rotateh(1) Y_rotate(1) Z*i
X_rotateh(2) Y_rotate(2) Z*i
.
.
X_rotateh(K1) Y_rotate(K1) Z*i
%for second iteration (i=2);
X_rotateh(1) Y_rotate(1) Z*i
X_rotateh(2) Y_rotate(2) Z*i
.
.
X_rotateh(K1) Y_rotate(K1) Z*i
%so on..
My second question;
I want to get 3D graph with those values. Thus, I need to plot
%for first iteration (i=1)
X_troc_rotateh(1:K1) and Y_troc_rotate(1:K1) curve on Z*i
%for second iteration (i=2)
X_troc_rotateh(1:K1) and Y_troc_rotate(1:K1) curve on Z*i
% so on..
How may I do? Thanks in advance.

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