MATLAB: Assigning outputs variable names

variable

I'm using the function findchangepts, which outputs 2 numerical values for me. I'd like to use these values and manipulate them further. How can I assign them separate variable names?

Thank you!

SamplNum = findchangepts(SensV, 'MaxNumChanges', 2);
  % code
end

which gives

SamplNum =
       21194
       21609

So I'd like to assign both of those sample numbers a variable in order to manipulate them.

Thanks for your help, sorry if this is a simple question/answer, I'm new to Matlab!

Best Answer

I am not sure how the function is working, but you could simply do

Variable_1=SamplNum(1);
Variable_2=SamplNum(2);

or you do

[Variable_1, Variable_2] = findchangepts(SensV, 'MaxNumChanges', 2);

and adapt the code in-between.

Related Solutions

MATLAB: Variable name with variation

What you're describing is called dynamic variable naming and it should be avoided. Instead, you can store the intended variable name and its value in a cell array as shown below.

star = cell(4,2); 
for a=1:4
   star{a,1} = 'a'; % in reality, this would vary across iterations

   star{a,2} = 22;  % in reality, this would vary across iterations
end

Or, you could store it in a structure,

star = struct(); 
for a=1:4
    star.('a') = 22; % assuming 'a' and will vary across iterations
end

See this outline for reasons to avoid using dynamic variable names.

MATLAB: How to define the name of a variable that depends on the “i” of a for cycle

"For the sake of efficiency I would like to create a for loop that could name these variables automatically."

This is one of the most inefficient things you can do with your code: https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval. Most efficient way is to save values in numeric or cell arrays.

Best Answer

Related Solutions

MATLAB: Variable name with variation

MATLAB: How to define the name of a variable that depends on the “i” of a for cycle

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