Introduction to CADStat

CADStat and R R is a powerful and free statistical package [

R capabilities R provides flexible plotting algorithms & libraries for running virtually any statistical analysis… …but R is run at the command line, so there’s a steep learning curve.

Java GUI for R (JGR) A Graphical User Interface (GUI) has been developed for R, which provides a point-and-click interface for some basic R functions.

CADStat Point-and-click interfaces for statistical tools useful in causal analysis Rendering of analysis results in browser window Additional help files CADStat adds several tools to JGR:

To your computers… Launch JGR & set up CADStat add-on.

Make sure “loaded” & “default” are checked for CADStat. [you should only have to do this step the 1 st time you run CADStat]

Set Working Directory.

JGR/CADStat: A gentler introduction to R Installing packages Setting up a workspace Loading data Managing data in your workspace JGR provides point-and-click tools for basic R functions:

JGR/CADStat: A gentler introduction to R JGR automatically provides help for R commands.

Load data

Load data dialog Name of file inside CADStat Delimiter character Is there a header row? Make each field accessible?

Launch the Object Browser

Examine structure of objects

Load 2 nd data file: site classifications

Merge site classifications with environmental data

Dataset Merge dialog

Scatterplots

Scatterplot dialog

Scatterplot

Generate same plot from command line

Editor dialog Type in the listed command… then highlight it with the mouse…

…then select from the top menu Edit -> Run Selection Editor dialog

You can also type commands directly into the console

Boxplot

Boxplot dialog

Boxplot

Scatterplot matrix

Correlation & scatterplot matrix dialog

Scatterplot matrix