MATLAB: Making a Loop with Strings

Question

Hello all,

What is the quick way of shortening this code?

Thanks in advance for the help (I'm sure this one's not 'hard' but I don't know the 'easy' way–or anyway).

data_10_100_1=importdata('filename_2.txt');
data_10_100_2=importdata('filename_5.txt');
data_10_100_3=importdata('filename_9.txt');
data_10_100_4=importdata('filename_11.txt');
data_10_100_5=importdata('filename_14.txt');
data_10_100_6=importdata('filename_16.txt');
data_10_100_7=importdata('filename_17.txt');
data_10_100_8=importdata('filename_18.txt');
data_10_100_9=importdata('filename_20.txt');
data_10_100_10=importdata('filename_22.txt');
data_10_100_11=importdata('filename_23.txt');
data_10_100_12=importdata('filename_24.txt');
data_10_100_13=importdata('filename_28.txt');
data_10_100_14=importdata('filename_29.txt');

The answer will be something like:

x = [2 5 9 11 14 16 17 18 20 22 23 24 28 29];
for i =1:14;
      data_10_100str2num(i) = importdata('filename_' num2str(x(i)) '.txt')
  end; clear i

but this doesn't work… I'm not sure how to fix it. HOw do I make that LHS correct (the RHS is probably also wrong..)

Many thanks, M.A.B.

Answer 1

Use a cell array

x = [2 5 9 11 14 16 17 18 20 22 23 24 28 29];
for i =1:14;
    data_10_100{i} = importdata(sprintf('filename_%d.txt',x(i)));
end;

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