How can I make a loop of the variables?

Hi, Experts

In this particular case, there are 432 variables from X1 to X432, however there is an array inside each of the variable. The question is what will be a way to make a loop that sums up the array in each variable and continues to other variable. Thus, Having all the data in a table.

Thank you

% Fuselage Variables
CF = [100  0  8.50  0  0  3000  16  8  1.71  204.80  629.80];
AF = [120  40  6.30  24  36  3800  16  8  1.35  161.68  516.68];
BF = [135  60  7.00  36  48  3700  16  8  1.38  166.05  576.05];
% Engine Variables
CE = [130  0  6.50  0  0  450  8  4  2.84  477.87  802.87];
AE = [160  80  5.50  24  24  600  8  4  2.13  358.40  713.40];
BE = [170  100  6.50  36  48  700  8  4  1.83  307.20  732.20];
% Rotor Variables
CR = [70  0  3.00  0  0  300  12  4  6.40  1075.20  1225.20];
AR = [90  50  4.50  24  48  700  12  4  2.74  460.80  735.80];
BR = [100  80  4.00  36  36  500  12  4  3.84  645.12  925.12];
% Combat Variables
CC = [200  0  4.00  0  0  500  3  2  0.48  92.16  292.16];
CA = [240  70  3.80  12  36  900  3  2  0.27  51.20  311.20];
CB = [270  120  4.00  24  36  800  3  2  0.30  57.60  377.60];
CC = [300  160  4.50  48  48  750  3  2  0.32  61.44  446.44];
% Avionic Suite Variables
CA = [200  0  5.00  0  0  600  3  2  0.40  76.80  326.80];
AA = [240  50  4.40  24  24  900  3  2  0.27  51.20  321.20];
AB = [270  90  4.80  36  48  1000  3  2  0.24  46.08  376.08];
AC = [300  130  5.00  48  24  850  3  2  0.28  54.21  434.21];
%Permutations Values
X1  =  [  CF  ;  CE  ;  CR  ;  CC  ;  CA  ]  ;
X2  =  [  CF  ;  CE  ;  CR  ;  CC  ;  AA  ]  ;
X3  =  [  CF  ;  CE  ;  CR  ;  CC  ;  AB  ]  ;
X4  =  [  CF  ;  CE  ;  CR  ;  CC  ;  AC  ]  ;
X5  =  [  CF  ;  CE  ;  CR  ;  CA  ;  CA  ]  ;

[Stephen23]

As Adam says, creating lots of variables like this is a really bad idea. Consider keeping them all in one array, or in a cell array, or a structure.

Here is an explanation of why creating variables like this is poor code: http://www.mathworks.com/matlabcentral/answers/196952-how-to-create-new-variables-in-batches-with-strcat

[Image Analyst]

How are X1 through X5 different from each other???? They seem to be the same set of C variables appended together.

[Adam]

They differ in the 5th column (or in the 4th column for X5)

Answer 1

[Adam]

Use an array, don't create 432 variables. That is the reason you are asking this question - you created all these variables and now you are immediately running into one of the many problems this creates.

If you had your variables in an array (use a cell array if the arrays in Xn are different lengths or contain different data types or just use a 2d array if they are all uniform in size and type) you would probably know exactly how to do what you want without even needing to ask.

Getting data into the right type of structures at the start is fundamental to writing neat and understandable code.

There are methods using the eval function where you can "make up for" bad data structure usage with unpleasant code constructs, but I have never used it and even if I have I would not recommend it for your own sake!

[Nut Pakwisutikul]

Thank you for your support, Can you please provide an example code?

[Adam]

    X(1,:,:) = [CF; CE; CR; CC; CA];
    X(2,:,:) = [CF; CE; CR; CC; AA];

etc.

would give you a 432*5*11 array (assuming all those listed arrays are length 11 - I didn't check) which you can index into to get each variable and can do maths on trivially without a loop e.g.

squeeze( sum( X ) );

will give you a 5 * 11 result array in which every variable has been summed over the 1st dimension.

I'm not sure I really understand from your question what kind of output you are looking for though.

[Nut Pakwisutikul]

Thank you