rspline computes a rational spline under tension for a given x and y vector.
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.|
rvX is a real vector with at least 3 elements.
rvY is a real vector with at least 3 elemetns.
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.
The meaning of p depends on the value of the parameter flag
flag can be one of the following values:
|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.