Curve Expansion type
The reference table containing the codes, names, and descriptions of the valid curve expansion methods.
United States Geological Survey, Surface Water User Group
| Code | Sort Order | Valid Flag | Name | Description |
|---|---|---|---|---|
| EQTN | 1 | true | equation | The curve is expanded by computing an equation of form y = a * (b + x) ** c + d. |
| LINR | 2 | true | linear | The curve is a linear expansion between curve point-pairs. |
| LOGX | 3 | true | logarithmic | The curve is expanded by logarithmic interpolation between curve point-pairs. |
| PEQT | 4 | true | polynomial equation | The equation is expanded by computing a polynomial equation of the form y = a + bx + c( x) ** 2 + d(x)**3 +. e(x)**4 + f(x)**5, which can have any number of degrees. |