graphics {ExpDes}

Regression model plots

Description

graphics Plots from regression models fitted in ANOVA.

Usage

graphics(
  a,
  degree = 1,
  mod = TRUE,
  main = " ",
  sub = " ",
  xlab = "Levels (X)",
  ylab = "Response var (Y)",
  pch = 19,
  xlim = NULL,
  ylim = NULL,
  bty = "o"
)

Arguments

a

Output from anova (performed in ExpDes).

degree

For polynomial models, 1 (linear model) is the default, 2 (quadratic model), 3 (cubic model), "pot" (Power model), "log" (Logistic model), "gom" (Gompertz model) and "exp" (Exponential model).

mod

Logic. Print the model expression and its R2 on the top of the graphic. The default is TRUE.

main

Title of the plot. Empty is the default.

sub

Subtitle of the plot. Empty is the default.

xlab

Name for axis X.

ylab

Name for axis Y.

pch

Caracter type to be used on the observed values.

xlim

Limits for axis X.

ylim

Limits for axis Y.

bty

Type of box the plot is fitted in.

Author(s)

Eric B Ferreira, [e-mail]

References

STEEL, R. G. D.; TORRIE, J. H. Principles and procedures in Statistics: a biometrical approach. McGraw-Hill, New York, NY. 1980.

See Also

reg.poly, plotres.

Examples

data(ex1)
attach(ex1)
a<-crd(trat, ig, quali=FALSE, nl=FALSE)
graphics(a, degree=1)
graphics(a, degree=2)
graphics(a, degree=3)