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

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. 

[madhan ravi]

upload your excel file , I can't see any attachments

[john karli]

its uploaded but got the same error

[john karli]

you got now it now its edited

[KSSV]

Error is clear the inputs of bar are of not same dimensions.

[john karli]

kindly explain

Answer 1

[KSSV]

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.