plotting the histogram of data points

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Ved
Ved on 11 Nov 2013
Commented: Ved on 11 Nov 2013
please consider this sample code:
figure
data = [0,2,9,2,5,8,7,3,1,9,4,3,5,8,10,0,1,2,9,5,10];
hist(data)
Why this histogram plots the data points 0 & 1 with frequency 4 (on Y-axis),when in fact 0 & 1 appear two times in data.

Accepted Answer

Azzi Abdelmalek
Azzi Abdelmalek on 11 Nov 2013
Edited: Azzi Abdelmalek on 11 Nov 2013
data = [0,2,9,2,5,8,7,3,1,9,4,3,5,8,10,0,1,2,9,5,10];
d=unique(data)
y= histc(data,d)
bar(d,y)
Look at
help hist
N = hist(Y) bins the elements of Y into 10 equally spaced containers and returns the number of elements in each container
help histc

More Answers (1)

Walter Roberson
Walter Roberson on 11 Nov 2013
You have 11 different values (0 through 10) but only 10 bins (default number to use if you do not specify the number in a hist() call).

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