How to generate multiple graphs per page in several pages in one loop?

Hi everyone,

I would like to create a single loop that will generate several pages of graphs. Moreover, I would like each page to contain 8 graphs. For example, if I have a matrix

A = randn(100,16);

I would like to create 2 pages of 8 graphs each. How could I change the following code in order to create the graphs in one loop

varnames_i = {'1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16'};
time = datetime(2000,1:100,1);

figure;
for k = 1:8 
subplot (4,2,k)
filename1 = plot( time' , A( : , k ) );
xlim(datenum([min(time) max(time)]))
title ( varnames_i(k));
hold on
end
saveas(filename1, '1_8.jpg');

figure;
for k = 1:8 
subplot (4,2,k)
filename2 = plot( time' , A( : , 8+k ) );
xlim(datenum([min(time) max(time)]))
title ( varnames_i(8+k));
hold on
end
saveas(filename2, '9_16.jpg');

[KALYAN ACHARJYA]

You can use the following way,

result=[graph1,graph2,graph3,graph4;graph5...]

% Plese mind it, display in the same row and semicolon display in next row, same as matrix elements imshow(result);

[gsourop]

Thank you very much for your answer. I am not quite sure how to integrate your answer in the code. My problem starts when increasing the dimensions of matrix A to 100x80 for example. I could replicate the code I wrote ten times but is not effective like this. I would like to generate a loop that creates these 10 graphs (8 subplots each).

[KALYAN ACHARJYA]

Sorry, I am not getting your question.

[gsourop]

I am saying that if A is a matrix 100x16 I could just use the code I wrote above. But if the dimensions of A increase, for example to 100x80, I should rewrite the code above 8 times. Such as,

varnames_i = {'1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24'};
% 1st time

time = datetime(2000,1:100,1);
figure;
for k = 1:8 
subplot (4,2,k)
filename1 = plot( time' , A( : , k ) );
xlim(datenum([min(time) max(time)]))
title ( varnames_i(k));
hold on
end
saveas(filename1, '1_8.jpg');

% 2nd time  
figure;
  for k = 1:8 
  subplot (4,2,k)
  filename2 = plot( time' , A( : , 8+k ) );
  xlim(datenum([min(time) max(time)]))
  title ( varnames_i(8+k));
  hold on
  end
  saveas(filename2, '9_16.jpg');

% 3rd time
figure;
  for k = 1:8 
  subplot (4,2,k)
  filename2 = plot( time' , A( : , 16+k ) );
  xlim(datenum([min(time) max(time)]))
  title ( varnames_i(16+k));
  hold on
  end
  saveas(filename2, '17_24.jpg');
% etc

So I would like to create a loop that does this iteration, instead of doing it manually.

Answer 1

[OCDER]

N = 8;
A = rand(100, N); %N is an integer number > 0

% I don't think you need this:
% varnames_i = {'1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16'}; 
%
% But here's a way to make this algorithmically
% varnames_i = cellfun(@(x) sprintf('%d', x), num2cell(1:size(A,2)), 'unif', false);

time = datetime(2000,1:100,1);
for v = 1:size(A, 2)
    varname = sprintf('%d', v);

      figure;
      for k = 1:8

          if size(A, 2) < k; break; end  %Added this in case your size(A,2) < 8, which errors out

           %filename1 = plot(time', A(:, k)); %confusing to name a plot handle
           %  as a "filename1". Plus, you need the figure handle (gcf) instead
           %  of plot handle when using saveas

           %xlim(datenum([min(time) max(time)])) no need for datenum

          subplot(4, 2, k)
          plot(time', A(:, k));
          xlim([min(time) max(time)])
          title(varname);
          hold on
      end
      filename = sprintf('%d_%d.jpg', 1+(v-1)*8, v*8); %makes the name 1_8.jpg, 9_16.jpg, ...
      saveas(gcf, filename);
  end