# dheft: Heft: hazard estimation with flexible tails In polspline: Polynomial Spline Routines

 dheft R Documentation

## Heft: hazard estimation with flexible tails

### Description

Density (dheft), cumulative probability (pheft), hazard rate (hheft), quantiles (qheft), and random samples (rheft) from a heft object

dheft(q, fit)
hheft(q, fit)
pheft(q, fit)
qheft(p, fit)
rheft(n, fit)

### Arguments

 q vector of quantiles. Missing values (NAs) are allowed. p vector of probabilities. Missing values (NAs) are allowed. n sample size. If length(n) is larger than 1, then length(n) random values are returned. fit heft object, typically obtained from heft.

### Details

Elements of q or p that are missing will cause the corresponding elements of the result to be missing.

### Value

Densities (dheft), hazard rates (hheft), probabilities (pheft), quantiles (qheft), or a random sample (rheft) from a heft object.

### Author(s)

Charles Kooperberg clk@fredhutch.org.

### References

Charles Kooperberg, Charles J. Stone and Young K. Truong (1995). Hazard regression. Journal of the American Statistical Association, 90, 78-94.

Charles J. Stone, Mark Hansen, Charles Kooperberg, and Young K. Truong. The use of polynomial splines and their tensor products in extended linear modeling (with discussion) (1997). Annals of Statistics, 25, 1371–1470.

heft, plot.heft, summary.heft.

### Examples

fit <- heft(testhare[,1],testhare[,2])
dheft(0:10,fit)
hheft(0:10,fit)
pheft(0:10,fit)
qheft((1:19)/20,fit)
rheft(10,fit)

polspline documentation built on Oct. 27, 2023, 1:07 a.m.