I want to double numbers that are less than the given parameter. What do I need to change

function dataSamples = AdjustMinValue(numberSamples, userSamples, minValue)
% numberSamples: Number of data samples in array dataSamples
% userSamples : User defined array
% minValue     : Minimum value of any element in array 

    % Write a for loop that iterates from 1 to numberSamples to double any element's 
    % value in dataSamples that is less than minValue 
    for i = 1:numberSamples
        if userSamples(i) > minValue
            dataSamples = userSamples * 2
        end
            
        
    end
    
    

end

This code doubles all user samples. It should only double numbers less minValue.

Ex.) if minValue = 10 then dataSamples [2,12,9,20] becomes [4,12,18,20]

Answer 1

[Giuseppe Inghilterra]

Your function will be:

function dataSamples = AdjustMinValue(numberSamples, userSamples, minValue)
% numberSamples: Number of data samples in array dataSamples
% userSamples : User defined array
% minValue     : Minimum value of any element in array 
    % Write a for loop that iterates from 1 to numberSamples to double any element's 
    % value in dataSamples that is less than minValue 
    for i = 1:numberSamples
        if userSamples(i) > minValue
            dataSamples(i) = userSamples(i);
        else
            dataSamples(i) = userSamples(i)*2;
        end       
    end
    
    
end

However, you don't need a for loop, you can just run following one-line code based on your last example:

dataSamples(dataSamples<minValue) = dataSamples(dataSamples<minValue)*2;

If we applied to your function, it becomes:

function dataSamples = AdjustMinValue(numberSamples, userSamples, minValue)
    dataSamples = userSamples;
    dataSamples(dataSamples<minValue) = dataSamples(dataSamples<minValue)*2;    
end

[Jackson]

for i = 1:numberSamples
        if userSamples(i) >= minValue
            dataSamples(i) = userSamples(i);
        else
            dataSamples(i) = userSamples(i)*2;
        end       
    end
    
    
end