MATLAB: Inputname statement – useful example

Hi everyone,

could you help me to understand what is the useful of the inputname statement? I run the following example:

function c = somma(a, b)
  disp(inputname(1))
  c = a + b;

in workspace:

x = 1;
y = 2;
somma(x, y)            %x is the result

From my example is not clear the useful of inputname. If you have a best example, let me know please.

Thank you.

Best Answer

inputname() is useful for giving error messages that reference variable names in the form the user knowns them.

Related Solutions

MATLAB: Using inputname and varargin for dynamic variable creation (?)

A couple of options that I can think of:

1. Use assignin. But as you may know, assignin would only allow you to assign to the caller or base workspace. So you can create a function like below, and then call it

assign(inputname(1), varargin{1}).

function assign(varName, varVal)
  assignin('caller', varName, varVal);
end

2. Use a structure:

for id = 1:nargin
  myVar.(inputname(id)) = varargin{id};
end

And change your code so that it uses myVar instead of individual variables.

MATLAB: Variable names whch include numerics

I know the most inefficient way to do that. (eval)

varNames1 = rand(20,1);
varNames2 = rand(20,1);
varNames3 = rand(20,1);
for i=1:3
    C{i} = eval(sprintf('varNames%i',i));
end

Best Answer

Related Solutions

MATLAB: Using inputname and varargin for dynamic variable creation (?)

MATLAB: Variable names whch include numerics

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