loessreg {AgroReg}

Analysis: loess regression (degree 0, 1 or 2)

Description

Fit a polynomial surface determined by one or more numerical predictors, using local fitting.

Usage

loessreg(
  trat,
  resp,
  degree = 2,
  sample.curve = 1000,
  ylab = "Dependent",
  xlab = "Independent",
  theme = theme_classic(),
  legend.position = "top",
  error = "SE",
  point = "all",
  width.bar = NA,
  scale = "none",
  textsize = 12,
  pointsize = 4.5,
  linesize = 0.8,
  linetype = 1,
  pointshape = 21,
  fillshape = "gray",
  colorline = "black",
  fontfamily = "sans"
)

Arguments

trat

Numeric vector with dependent variable.

resp

Numeric vector with independent variable.

degree

Degree polynomial (0,1 or 2)

sample.curve

Provide the number of observations to simulate curvature (default is 1000)

ylab

Variable response name (Accepts the expression() function)

xlab

treatments name (Accepts the expression() function)

theme

ggplot2 theme (default is theme_bw())

legend.position

legend position (default is c(0.3,0.8))

error

Error bar (It can be SE - default, SD or FALSE)

point

defines whether you want to plot all points ("all") or only the mean ("mean")

width.bar

Bar width

scale

Sets x scale (default is none, can be "log")

textsize

Font size

pointsize

shape size

linesize

line size

linetype

line type

pointshape

format point (default is 21)

fillshape

Fill shape

colorline

Color lines

fontfamily

Font family

Value

The function returns a list containing the loess regression and graph using ggplot2.

Author(s)

Gabriel Danilo Shimizu

Leandro Simoes Azeredo Goncalves

See Also

loess

Examples

library(AgroReg)
data("aristolochia")
attach(aristolochia)
loessreg(trat,resp)