np (version 0.60-17)

gradients: Extract Gradients

Description

gradients is a generic function which extracts gradients from objects.

Usage

gradients(x, ...)
# S3 method for condensity
gradients(x, errors = FALSE, ...)
# S3 method for condistribution
gradients(x, errors = FALSE, ...)
# S3 method for npregression
gradients(x, errors = FALSE, ...)
# S3 method for qregression
gradients(x, errors = FALSE, ...)
# S3 method for singleindex
gradients(x, errors = FALSE, ...)

Value

Gradients extracted from the model object x.

Arguments

x

an object for which the extraction of gradients is meaningful.

...

other arguments.

errors

a logical value specifying whether or not standard errors of gradients are desired. Defaults to FALSE.

Author

Tristen Hayfield , Jeffrey S. Racine

Details

This function provides a generic interface for extraction of gradients from objects.

References

See the references for the method being interrogated via gradients in the appropriate help file. For example, for the particulars of the gradients for nonparametric regression see the references in npreg

See Also

fitted, residuals, coef, and se, for related methods; np for supported objects.

Examples

x <- runif(10)
y <- x + rnorm(10, sd = 0.1)
gradients(npreg(y~x, gradients=TRUE))