b spline interpolation
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#include <OpenMS/MATH/MISC/BSpline2d.h>
Enumerator |
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BC_ZERO_ENDPOINTS |
Set the endpoints of the spline to zero.
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BC_ZERO_FIRST |
Set the first derivative of the spline to zero at the endpoints.
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BC_ZERO_SECOND |
Set the second derivative to zero.
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Create a single spline with the parameters required to set up the domain and subsequently smooth the given set of y values. The y values must correspond to each of the x values. If either the domain setup fails or the spline cannot be solved, the state will be set to "not OK".
- See Also
- ok().
- Parameters
-
x | The array of x values in the domain. |
y | The array of y values corresponding to each of the x values in the domain. |
wavelength | The cutoff wavelength, in the same units as the x values. A wavelength of zero disables the derivative constraint. |
boundary_condition | The boundary condition type. If omitted it defaults to BC_ZERO_SECOND. |
num_nodes | The number of nodes to use for the cubic b-spline. If less than 2, a "reasonable" number will be calculated automatically, taking into account the given cutoff wavelength. |
- Precondition
- x and y must be of the same dimensions.
static void debug |
( |
bool |
enable | ) |
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static |
Enable or disable debug messages from the B-spline library.
Return the first derivative of the spline curve at the given x
. Returns zero if the current state is not ok().
Return the evaluation of the smoothed curve at a particular x
value. If current state is not ok(), returns zero.
Return whether the spline fit was successful.
Solve the spline curve for a new set of y values. Returns false if the solution fails.
- Parameters
-
y | The array of y values corresponding to each of the x values in the domain. |