probability of occurence of a specific value
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Hi all! I have a question concerning the probability of occurence of a specific value. I have a set of precipitation data and would like to find the frequency histogram for precipitation values equal to zero. is there someone here who is able to solve this easy problem? :) thank you
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Answers (3)
Guillaume
on 10 Mar 2015
You must have at least two bins for the histogram functions, you could just set the threshold of the second bin to something very small:
h = histc(data, [0 0.00001]);
But if you really just want the number of values equal to 0:
num0 = sum(data == 0);
%or num0 = sum(abs(data < 0.00001)) if you want to include values very close to 0
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Guillaume
on 10 Mar 2015
moreover I would like to plot a relative frequency histogram instead of the normal one
I assume that's what you want:
precipitationhistogram = precipitationhistogram / sum(precipitationhistogram);
precipitationhistogram = histcounts(filteredprecipitation, [0 0.1 1 3 10 Inf], 'Normalization', 'probability');
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