Methods' Details |
recalculateRegression
void |
recalculateRegression( |
[in] sequence< double > |
aXValues, |
| [in] sequence< double > |
aYValues ); |
- Description
- recalculates the parameters of the internal regression curve according to
the x - and y -values given.
- Parameter aXValues
- All x-values that represent the measurement points on
which the regression is based
- Parameter aYValues
- All y-values that represent the measurement points on
which the regression is based
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getCurveValue
- Description
- calculates the value of the regression curve for x .
- Parameter x
- The abscissa value for which the value of the regression
curve should be calculated. All numbers that are part of
the domain of the regression function are valid.
- Returns
- If x is element of the domain of the regression
curve function, the result is its value.
@throw com::sun::star::lang::IllegalArgumentException
If x is not part of the domain of the regression
function.
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getCorrelationCoefficient
double |
getCorrelationCoefficient(); |
- Description
- Returns the value of the correlation coefficient for the given
regression. This value is often denoted as r or
R .
The value of r is signed. Often
r 2 is used instead of r to denote
a regression curve's accuray.
- Returns
- The return value is the fraction of the variance in the
data that is explained by the regression.
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getRepresentation
string |
getRepresentation(); |
- Description
- Retrieve a string showing the regression curve's function with
calculated parameters.
- Returns
- The string returned contains the regression curve's
formula in a form
"f(x) = ..." , where the
calculated parts are filled out. For a linear regression
you might get "f(x) = 0.341 x + 1.45" .
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Copyright © 2003 Sun Microsystems, Inc.