plotting the histogram of data points

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Ved
Ved 2013-11-11
评论： Ved 2013-11-11
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.

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Azzi Abdelmalek
Azzi Abdelmalek 2013-11-11
编辑：Azzi Abdelmalek 2013-11-11
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

更多回答（1 个）

Walter Roberson
Walter Roberson 2013-11-11
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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