summary_greek {greekLetters}

Summarizing Linear Model Fits With Greek Letters

Description

summary method with Greek letters for class "lm".

Usage

summary_greek(object, correlation = FALSE, symbolic.cor = FALSE, ...)

Arguments

object

an object of class "lm", usually, a result of a call to lm.

correlation

logical; if TRUE, the correlation matrix of the estimated parameters is returned and printed.

symbolic.cor

logical. If TRUE, print the correlations in a symbolic form (see symnum) rather than as numbers.

...

Arguments passed on to stats::summary.lm

Details

It is recommended that the font size of the R console be increased for better visualization of the symbols, as some of the symbols are quite small.

Value

The function is like summary.lm but with Greek letters in output.

Author(s)

Kévin Allan Sales Rodrigues.

See Also

See summary.lm for more details.

Examples

# Same example as summary.lm but with Greek letters
## Annette Dobson (1990) "An Introduction to Generalized Linear Models".
## Page 9: Plant Weight Data.
ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
group <- gl(2, 10, 20, labels = c("Ctl","Trt"))
weight <- c(ctl, trt)
lm.D9 <- lm(weight ~ group)
lm.D90 <- lm(weight ~ group - 1) # omitting intercept
coef(lm.D90)  # the bare coefficients
summary_greek(lm.D90 <- lm(weight ~ group -1))  # omitting intercept