Problem in "Increasing Automation with Functions > Creating and Calling Functions > (5/5) Create and Call Local Function", Task 2, MatLab Fundamentals

Question

Luciano Manuel 2024-2-26

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https://ww2.mathworks.cn/matlabcentral/answers/2087078-problem-in-increasing-automation-with-functions-creating-and-calling-functions-5-5-create-and

评论： Luciano Manuel 2024-3-9

I have reached the Task 2 but I'm not finding what's wrong. My script is:

function pp = paretoperc(medals)
ppgold = paretoperc(golds);
% Cumulative contribution of data points (in order)
cc = cumsum(sort(medals(:),"descend"));  % (:) to ensure column vector
cc = 100*cc/cc(end);                     % Normalize to percentage
% Corresponding percentiles (column vector to match cc)
pct = (1:numel(medals))';
pct = 100*pct/numel(pct);                % Normalize to percentage
% Find the number of data values needed so that
% P% of the data is in (100-P)% of the values
idx = find(cc >= (100-pct),1,"first");
pp = cc(idx);
end

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Answer 1

Jaynik 2024-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/2087078-problem-in-increasing-automation-with-functions-creating-and-calling-functions-5-5-create-and#answer_1422351

编辑：Jaynik 2024-3-7

Hi Luciano,

The way you have calculated the value of "ppgold" is correct but you have written it within the function definition of "paretoperc". You just need to call the function and assign it to "ppgold" instead of adding it inside the function and writing the entire function again. Note that you cannot have the same function definition twice and you need to define the function at the end of the file to use it twice.