Find average of an array for values > 0

find average of array only for values > 0 and print using for loop and for where there is data (ie more than 0 values in the data)

i) sum of values

IF DATA > 0****** --> this is my main issue im stuck with

for i = 1:length(data)

sum = sum + data(i)

end

fprintf("%.2f\n", sum)

ii) average

if length(data) > 0

average = sum/ length(data)

end

fprintf("%.3f\n", average)

Answer 1

[stozaki]

Hi,

What about the following processing?

data = [1 2 10 -38 -7 2 8 10 -5 1 0 -5 37]; % example data 
idx = find(data > 0); % Index of values greater than 0
result = mean(data(idx)); % average

find

mean

[Cameron Bowyer]

Thank you very much for the reply. I have to use for and if statements to come up with the answer for average I, umfortunately, cannot just do "mean(data)".

i really like the idea of the idx = find(data > 0); though and I will try that in my code now.

instead of calling this "idx" can i name it something like "data > 0" as it might be more appropriate?

[stozaki]

If you use for and if statements, you can do the following:

data = [1 2 10 -38 -7 2 8 10 -5 1 0 -5 37]; % example data 
temp = 0; % initialize temp
count = 0; % initialize count
for N = 1:length(data)
    if data(N) > 0
        temp = data(N) + temp;
        count = count + 1;
    else
        % nop
    end
end

average = temp/count

average = 8.8750