How can I run preloaded csv data through a loop?

% define loaded csv data and other variables

IM_1 = csvread('filename1.csv',2,2,[2,2,214,8]);

IM_2 = csvread('filename2.csv',2,2,[2,2,206,8]);

IM_3 = csvread('filename3.csv',2,2,[2,2,186,8]);

edges1 = 0:1:20;

% loop to create subplots of data 

for i = 1:3

      sorted_IM_i = IM_i(IM_i(:,1)>3 & IM_i(:,1)<5 , :); 

      hGi = hist(sorted_IM_i(:,2),edges1);

      hNGi = hGi/sum(hGi(:));

      figure (1); clf; 

      subplot(8,1,i)

      plot(edges1,hNGi,'r');

end

My data won't enter the loop and I'm not sure how to get the IM_1 to enter the loop first so the rest of the data will go through.

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

Answer 2

[Jae Song]

You can put the three variables (IM_1,IM_2,IM_3) into a cell array variable (IM_s) and loop through the cell array variable. Please see the following code example.

% define loaded csv data and other variables
IM_1 = csvread('filename1.csv',2,2,[2,2,214,8]);
IM_2 = csvread('filename2.csv',2,2,[2,2,206,8]);
IM_3 = csvread('filename3.csv',2,2,[2,2,186,8]);
IM_s = {IM_1, IM_2, IM_3};
edges1 = 0:1:20;

% loop to create subplots of data 
for i = 1:3
      IM_i = IM_s{i} % extract data;for i = 1, IM_1 data
      sorted_IM_i = IM_i(IM_i(:,1)>3 & IM_i(:,1)<5 , :); 
      hGi = hist(sorted_IM_i(:,2),edges1);
      hNGi = hGi/sum(hGi(:));
      figure (1); clf; 
      subplot(8,1,i)
      plot(edges1,hNGi,'r');
end

[Andrea]

The code mentioned above only plots one histogram, instead of 3. Is there a way to fix that?

[Jae Song]

Try figure(i); instead of figure(1);clf;