MATLAB: Select first 15 from ans

ansMATLABstore values

Hi,

When I execute a particular function, it produces 70 values in ans. But i want only first 15 values stored in a array variable. How do I do it?

TIA

Best Answer

It appears that you are calling the function without an output assignment.

Call it as:

v = theFunction(x);

then:

v = v(1:15);

to keep only those elements you want.

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MATLAB: How to select the best 15 scores

When you sort descending, the NaN values are actually sorted on top. You can use indexing to ignore NaN's before sorting. I'm adding a bit of extra code to keep track of the original position of these best 15 scores (you might want it later).

myData = rand(70,1); % pretend data
myData([1,2,4,6]) = NaN; % adding NaNs for testing
idxKeepers = find(~isnan(myData)); % index for non-NaN data
[~,idxSort] = sort(myData(idxKeepers),'descend');
idxBestScores = idxKeepers(idxSort(1:15));
bestScores = myData(idxBestScores);

idxBestScores contains the location of the best 15 scores in your original data. bestScores contains the 15 best scores (sorted descending).

MATLAB: Select first letter in multiple words

vow = 'AEIOUaeiou';
x(ismember(x, vow)) = [];

But this does not have anything to do with removing the first letter of every word. It also does not deal with the case where 'y' is acting as a vowel, or the more subtle cases where 'l', 'm', 'n', 'r', or 'w' act as vowels in English.

Best Answer

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MATLAB: How to select the best 15 scores

MATLAB: Select first letter in multiple words

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