How to plot each matrix in a cell in 3d plot ?

Let's say: Cell A with size of 1x100 cell:

 A={1x100} cell

And the size each matrix in the cell A is like this:

 {A}= {[A1] [A2] [A3] [A4] [A5]......... [A100] }
 {A}= {[5000x3  double] [1000x3  double]......... [2222x3 double] }

Where the structure of matrix Ai is coordinate (x,y,z)

Example:

 [A1]= [2  1   1       ------> coordinate of point 1 
        3  2   4
        5  2   6
        ........ 
        ........
        7  9   1]      ------> coordinate of point 5000

How to plot all matrix (coordinate) of cell A in 1 figure in 3d graph? (if possible, please help me plot 1 matrix with 1 color)

Answer 1

[Akira Agata]

I don't think it's better to plot 100 lines in one graph... But I believe the following code would be what you want to do. I hope this sample code can help you!

% Make 100 colors
color = jet(100);

% Sample data (1x100 cell array)
A = cell(1,100);
for kk = 1:numel(A)
  z = 10*rand()+(0:pi/50:10*rand()*pi)';
  x = 10*rand()*sin(z);
  y = 10*rand()*cos(z);
  A{kk} = [x,y,z];
end

% Plot them in one figure with different color
figure
hold on;
for kk = 1:numel(A)
  plot3(A{kk}(:,1),A{kk}(:,2),A{kk}(:,3),...
      'Color',color(kk,:));
end
view(3);

[KALYAN ACHARJYA]

[ha ha]

actually, I wanna plot coordinate (x y z) of "each point" in all matrices from cell A (not plot line).

In your code, you use syntax" plot3" for plot 3d Line. But i wanna plot point, point only (I must use syntax "scatter3"). But I don't know how to make 1 color for 1 matrix by using "scatter3"). Can you help me?

[Akira Agata]

I have just modified the code. It generates A={1xN} cell array and plots each point. To simplify, N was set to 33 in the following code.

N = 33;

% Make N colors
color = jet(N);

% Sample data (1xN cell array)
A = cell(1,N);
for kk = 1:numel(A)
  z = 20*rand()+(0:pi/8:10*rand()*pi)';
  x = 20*rand()+2*rand()*sin(z);
  y = 20*rand()+2*rand()*cos(z);
  A{kk} = [x,y,z];
end

% Plot them in one figure with different color
figure
hold on;
for kk = 1:numel(A)
  plot3(A{kk}(:,1),A{kk}(:,2),A{kk}(:,3),...
      '.','Color',color(kk,:));
end
grid on;
view(3);

[ha ha]

Thank so much,@ Akira Agata

One more question? If i want to use "color map" to show the color corresponding with the number of matrices, how can i do that? (e,g. i have 10 matrices (A1, A2, A3,..., A10), so the color bar will show 10 color , and also show 10 number from 1 to 10 corresponding with 10 colors)

Please see illustrated photo

[Akira Agata]

How about adding a "legend", instead of a "color bar," to the figure? When you add legend('show'); to the code, the output figure becomes like this.