Loop input variables into function to get the various output in table

Hello!

I have a function for which i have some variables as input that create output as follows:

function(A,B,C,D,E,F,G) - So I input varibles A thru G and get the below output X thu Z

for i = 1:varout

switch i

case 1

varout{1} = X;

case 2

varout{2} = Y;

case 3

varout{3} = Z;

end

I have for example the following input variables I want to pass thru the function all at once for me to get a table with all the output variables given the input.

A B C D E F G X Y Z

1 2 1 2 6 7 1 =

3 1 1 8 7 4 10 =

1 5 1 2 6 3 8 =

Appreciate all the help in this matter! Thanks so much!

[Adam Danz]

The question/goal is not clear.

I see you're using varout which suggests you expect a variable number of outputs. But you mention that the output should be a table so it's not clear how that all ties together.

Also, what are A,B,C,...,G? Could you provide examples of these inputs?

I have a feeling you're working with a variable number of inputs and want a single output variable that is a table containing the columns from your key when given the input variables. Is that right?

[IDN]

Hi Adam,

Thank you for taking the time to look at my question and trying to help me out. Yes you are right! Sorry for the confusing question, I was clearly finding it difficutl to explain.

Here are some input examples:

Function(41,62,92,17,3,7,-2)

Function(41,61,92,18,4,7,-2)

Function(41.5,62,92,16,3,7,-2)

Thanks!

[Adam Danz]

That's helpful. How do those inputs map onto what the outputs should be?

[IDN]

i envision each column is an array (A,B,C...) and each row is a "function run" that places on that same row (X,Y,Z). Therefore the mapping/indexing should be on a row basis

Table/Input Table/Output

A B C D E F G X Y Z

41 62 92 17 3 7 -2 54 3.3 5 Varout of function with the inputs in this row

41 61 92 18 4 7 -2 80 1 -4

41.5 62 92 6 3 7 -2 4 36 25

Something along those lines...

[Adam Danz]

Where do those X,Y,Z values come from?

What should the program do?

[IDN]

Its a very complex code, but as as example something like the below should work (just anything really)

X = A+B+C+D+E+F+G;

Y = X / 2;

Z = X+Y;

[Adam Danz]

That should be easy to implement. If those are your variable names, then that's exactly the code you would use to produce those outputs. But I must admit, I am still quite uncertain of the goal.

[IDN]

So Adam, what I vectors/list of the A-G variables....but want to pass them to the function somehow/systematically instead of typing set or variables individually...maybe a loop or something else...that passes thru every row in the vector/list and on that same row in another table records the output variables.

Answer 1

[Voss]

Something like this maybe?

% your initial table
input_table = array2table([ ...
    41    62  92  17   3    7   -2; ...
    41    61  92  18   4    7   -2; ...
    41.5 62  92   6    3    7   -2; ...
    ],'VariableNames',{'A' 'B' 'C' 'D' 'E' 'F' 'G'})

input_table = 3×7 table
     A      B     C     D     E    F    G 
    ____    __    __    __    _    _    __

      41    62    92    17    3    7    -2
      41    61    92    18    4    7    -2
    41.5    62    92     6    3    7    -2

% convert to a cell array
inputs = table2cell(input_table)

inputs = 3×7 cell array
    {[     41]}    {[62]}    {[92]}    {[17]}    {[3]}    {[7]}    {[-2]}
    {[     41]}    {[61]}    {[92]}    {[18]}    {[4]}    {[7]}    {[-2]}
    {[41.5000]}    {[62]}    {[92]}    {[ 6]}    {[3]}    {[7]}    {[-2]}

% pass each row of inputs to your function, and 
% collect the outputs in another cell array
N = size(input_table,1);
outputs = cell(N,3);
for ii = 1:N
    [outputs{ii,:}] = your_function(inputs{ii,:});
end
outputs

outputs = 3×3 cell array
    {[     220]}    {[     110]}    {[     330]}
    {[     221]}    {[110.5000]}    {[331.5000]}
    {[209.5000]}    {[104.7500]}    {[314.2500]}

% convert the outputs to a table
output_table = cell2table(outputs,'VariableNames',{'X' 'Y' 'Z'})

output_table = 3×3 table
      X        Y         Z   
    _____    ______    ______

      220       110       330
      221     110.5     331.5
    209.5    104.75    314.25

function [X,Y,Z] = your_function(A,B,C,D,E,F,G)
X = A+B+C+D+E+F+G;
Y = X / 2;
Z = X+Y;
end

[IDN]

Thank you so much!

[Voss]

You're welcome!