Dear useRs,

my new package extracat is now available from CRAN.

It provides extensions to mosaicplots and parallel coordinates plots for 
the visualization of categorical data.

The new member of the mosaicplot family is called rmb-plot and it 
visualizes the factorization of the absolute frequencies in a contingency 
table into conditional relative frequencies and weights. It is possible to 
choose between the barcharts version (which is a bit similar to multiple 
barcharts) and the generalized spineplot version. The rmb function is also 
available in an interactive version callled irmb which is based on the 
package iWidgets ( http://www.rforge.net ).

Parallel coordinates plots are made fit for categorical data with the 
function cpcp, which is based on the ipcp function from package iplots. To 
reflect the categorical structure of the data, point sequences and 
orderings are applied to the categories of different variables. It is 
possible to use interactive highlighting and linking with other iplots. 
Furthermore the cpcp function also accepts continuous data.

I hope, everyone who is interested will enjoy my first R-package !

Best wishes

Alexander Pilhöfer

University of Augsburg
www.rosuda.org

    
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