gradients {np}R Documentation

Extract Gradients

Description

gradients is a generic function which extracts gradients from objects.

Usage

gradients(x, ...)

## S3 method for class 'condensity':
gradients(x, errors = FALSE, ...)

## S3 method for class 'condistribution':
gradients(x, errors = FALSE, ...)

## S3 method for class 'npregression':
gradients(x, errors = FALSE, ...)

## S3 method for class 'qregression':
gradients(x, errors = FALSE, ...)

## S3 method for class 'singleindex':
gradients(x, errors = FALSE, ...)

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.

Details

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

Value

Gradients extracted from the model object x.

Note

This method currently only supports objects from the np library.

Author(s)

Tristen Hayfield hayfietj@mcmaster.ca, Jeffrey S. Racine racinej@mcmaster.ca

References

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(npregbw(y~x), gradients=TRUE))

[Package np version 0.12-1 Index]