rsplineΒΆ
rspline computes a rational spline under tension for a given x and y vector.
- rmXY = rspline(rvX, rvY, p)
- rmXY = rspline(rvX, rvY, p, rsTensionFactor)
- rmXY = rspline(rvX, rvY, p, rsTensionFactor, flag)
Return Value
The return value rmXY is a real matrix with two columns. The first column contains the x-coordinates of the spline and the second column contains the y-coordinates of the spline. In case of an error rmXY has only one element with an error number:
| 1 | not enough memory |
| 2 | x-coordinates are not strictly increasing |
| 3 | less than 3 datapoints specified. |
Parameters
- rvX
rvX is a real vector with at least 3 elements.
- rvY
rvY is a real vector with at least 3 elemetns.
- rsTensionFactor
rsTensionFactor is a value in the range 0 to 100. For 0 the spline is similar to a cubic spline and for values close to 100 the result is a polygon. Default value is 1.
- p
The meaning of p depends on the value of the parameter flag
- flag
flag can be one of the following values:
Value Meaning 1 p is the number of x-, y-coordinates calculated. 2 p is the number of x-, y-coordinates calculated. The original x-coordinates are added to the total. 3 p is a strictly increasing vector of x-coordinates. Default value is 1.
Example
History
| Version | Description |
|---|---|
| 5.5.0 | New |
See also
Overview Mathematic, pspline, fspline, akimaspline, interpol
id-1612071