# gmodels

Tools for fitting linear models that complement those in base `R`

.

Provided functions include:

`ci`

- Compute Confidence Intervals`coefFrame`

- Return model parameters in a data frame`CrossTable`

- Cross Tabulation with Tests for Factor Independence`estimable`

- Compute contrasts and estimable linear functions`fast.prcomp`

- Efficient computation of principal components and singular value decomposition`fit.contrast`

- Compute and test arbitrary contrasts for regression objects`glh.test`

- Test a General Linear Hypothesis for a Regression Model`make.contrasts`

- Construct a User-Specified Contrast Matrix

## Installation

Install the released version of gmodels from CRAN with:

`install.packages('gmodels')`

Install the development version of gmodels from GitHub with:

```
# install.packages("devtools")
devtools::install_github("r-gregmisc/gmodels")
```