check whather user input is given or Not and check the validation

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ORUGANTI SIVAMURALIKRISHNA 2020-6-8

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https://ww2.mathworks.cn/matlabcentral/answers/544160-check-whather-user-input-is-given-or-not-and-check-the-validation

评论： ORUGANTI SIVAMURALIKRISHNA 2020-6-15

I wrote a code and while executing it sometimes i will skip some inputs then it will continue to second line, whle computing it will show error and exit. so i want to eliminate ot by making sure the user given input and show him all the given inputs and giving cahncce to change them if required then continue can you please help

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Answer 1

Dhanush Bejjarapu 2020-6-8

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https://ww2.mathworks.cn/matlabcentral/answers/544160-check-whather-user-input-is-given-or-not-and-check-the-validation#answer_447842

Do you mean that we need to give input for few parameters and they should be used for the next steps?

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ORUGANTI SIVAMURALIKRISHNA 2020-6-10

if input is not given then ask for the input again or exit the program

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Answer 2

Walter Roberson 2020-6-8

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https://ww2.mathworks.cn/matlabcentral/answers/544160-check-whather-user-input-is-given-or-not-and-check-the-validation#answer_447848

在 MATLAB Online 中打开

function varargout = YourFunction(varargin)
  argnames = {'x', 'y', 'n'};
  for K = 1 : length(argnames)
      if nargin < K || isempty(varargin{K}) || any(isnan(varargin{K}(:)))
          new_parameter = input( sprintf('Enter a value for %s ', argnames{K} ) );
          newargs = varargin;
          newargs{K} = new_parameter;
          [varargout{:}] = YourFunction(newargs{L});
          return
      end
  end
  %if you got here, your argument validation passed, so do your regular computation
end