Milena (Olena)
User documentation 2.0a Id
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Variance accumulator class. More...
#include <variance.hh>
Inherits mln::accu::internal::base< R, variance< T, S, R > >.
Public Member Functions | |
bool | is_valid () const |
Check whether this accu is able to return a result. | |
R | mean () const |
Get the mean value. | |
unsigned | n_items () const |
Get the number of items. | |
R | standard_deviation () const |
Get the standard deviation value. | |
S | sum () const |
Get the sum value. | |
void | take_n_times (unsigned n, const T &t) |
Take n times the value t . | |
R | to_result () const |
Get the accumulator result (the variance value). | |
R | var () const |
Get the variance value. | |
void | init () |
Manipulators. | |
Variance accumulator class.
Parameter T
is the type of values that we sum. Parameter S
is the type to store the value sum and the sum of value
S
is the summation type (property) of T
. Parameter R
is the type of the mean and variance values; the default type of R
is S
. Definition at line 61 of file variance.hh.
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Check whether this accu is able to return a result.
Always true here.
Definition at line 229 of file variance.hh.
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Get the number of items.
Definition at line 205 of file variance.hh.
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Get the standard deviation value.
Definition at line 221 of file variance.hh.
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Get the sum value.
Definition at line 197 of file variance.hh.
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Take n
times the value t
.
Dev note: this is a final method; override if needed by take_as_init_ (ending with '_').
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Get the accumulator result (the variance value).
Definition at line 176 of file variance.hh.
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Get the variance value.
Definition at line 213 of file variance.hh.