Calculate percentage of zeros and ones in my vector?
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Bojan
am 5 Jun. 2014
Beantwortet: Vijayramanathan B.tech-EIE-118006077
am 21 Jan. 2018
I've already have my vector and number of zeros and ones with this code:
u=[1 1 1 1 1 0 0 0 1 1 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0]
transitions=(find(u~=[u(2:end), u(end)+1]));
value=u(transitions)
transitions(2:end)=transitions(2:end)-transitions(1:end-1)
i get this
value =
1 0 1 0 1 0
transitions =
5 3 2 7 5 3
Now, please if someone could help me and explain how I can get percentage of ones and percentage of zeros in my vector (all together, and by each value). Thank You very much.
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Star Strider
am 5 Jun. 2014
Bearbeitet: Star Strider
am 5 Jun. 2014
This works:
u=[1 1 1 1 1 0 0 0 1 1 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0]
pctg_1 = sum(u)/size(u,2) * 100 % Percentage of ‘1’
pctg_0 = 100 - pctg_1 % Percentage of ‘0’
produces:
pctg_1 =
48.0000
pctg_0 =
52.0000
11 Kommentare
Image Analyst
am 24 Sep. 2017
That's because he used size(u, 2) to count the number of column. This fix will make it work for any array, regardless of the shape/dimensions and regardless of what values are in there (0, 1, or other values):
percentageOfOnes = sum(u(:) == 1) / numel(u) * 100 % Percentage of ‘1’
Walter Roberson
am 24 Sep. 2017
The original Question asked specifically about vectors. For arrays,
pctg_1 = sum(u(:))/numels(u) * 100 % Percentage of ‘1’
Or,
pctg_1 = nnz(u)/numels(u) * 100 % Percentage of ‘1’
Or more simply,
pctg_1 = mean2(u) * 100 % Requires Image Processing Toolbox
Weitere Antworten (1)
Vijayramanathan B.tech-EIE-118006077
am 21 Jan. 2018
function a = zero_stat(b)
c=(sum(b(:))/numel(b))*100;
a=100-c;
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