Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Group: Statistical Data Analysis
Topic: Nonparametric Methods
See also: sker isoreg rmed l1line

Function: lowess
Description: lowess computes the robust locally weighted regression. Fitted values

are computed at each of the given values x.


Usage: yh = lowess (x, y{, f})
Input:
x n x 1 vector (regressor variables)
y n x 1 vector (response variables)
f scalar
Output:
yh n x 1 vector

Note:

Example:

; read the geyser data

x = read ("geyser")

; sort them

x = sort(x)

; compute the estimate

yh = lowess (x[,1], x[,2])

; create a display for plotting

d = createdisplay(1,1)

; show the data and the fitted line

show (d, 1, 1, x, x[,1]~yh)

Result:


Group: Statistical Data Analysis
Topic: Nonparametric Methods
See also: sker isoreg rmed l1line

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

(C) MD*TECH Method and Data Technologies, 21.9.2000