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how to solve bar Error . Error using bar (line 58) X must be same length as Y.

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i have this code. last time its work good and but now bar error is shown.
[num,text,raw] = xlsread('Book1.xlsx');
x=num(:,7);
observX = x(1:1000);
imageX=0:23;
nX = length(imageX);
for i = 1:nX
cX = imageX(i);
cntX(i) = sum(observX == cX);
end
pmfX = cntX/sum(cntX);
figure;
bar(imageX, pmfX);
title('Marginal PMF Of "O3.1st.Max.Hour"')
xlabel('Image Of O3.1st.Max.Hour')
ylabel('Marginal PMF')
figure;
bar(imageX, cntX);
title('Histogram Of "O3.1st.Max.Hour"');
xlabel('Image Of O3.1st.Max.Hour');
ylabel('Counts of Occurence');
Error using bar (line 58) X must be same length as Y.
  5 Comments
KSSV
KSSV on 27 Dec 2018
Edited: KSSV on 27 Dec 2018
Error is clear the inputs of bar are of not same dimensions.

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Accepted Answer

KSSV
KSSV on 27 Dec 2018
Try:
x=num(:,2); % or x=num(:,1); %
As you have used
x=num(:,7);
I suspect.....one of the input to bar is empty or NaN...so the error.

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