| MATLAB Function Reference |
histogram
Compute a histogram
Syntax
[result,descriptor] = histogram(x) [result,descriptor] = histogram(x,descriptor)
Description
The discriptor describes the cells of the histogram. The
discriptor consists of three elements
[lower,upper,ncell]. The default values are
lower=min(x)-delta/2, upper=max(x)+delta/2 and
ncell=ceil(sqrt(length(x))), where delta=(max(x)-min(x))/(length(x)-1).
Its assumed that lower < upper and
ncell >= 1. Futhermore its assumed that x is a row
vector.
The result is a row vector containing the histogram of x.
The index of the histogram cells is computed by index = round( (x(i)-lower) / (upper-lower) * ncell
) + 1/2. If the index is out of the range 1 <= index <=
ncell, consequently x(i) < lower or upper <= x(i), the element of x(i) is
excluded from the histogram.
See Also
Literature
None
Source code
| MATLAB Function Reference |