Showing posts with label Freeware. Show all posts
Showing posts with label Freeware. Show all posts

Saturday, July 24, 2010

Grammar of graphics

MEG data plotted with ggplot2Image by pealco via Flickr
The grammar of graphics is a fine attempt to teach analytic graphics. Developed for the freeware statistical software R, the ggplot2 module is indeed a fine tool to use graphs to analyze data.
 Hadley Wickham has announced that new versions of his popular grammar-of-graphics charting package ggplot2 and his general-purpose data reshaping tool plyr for R are now available. 

Some graphs created by ggplot2 are indeed work of art, especially the ones where multivariate data are presented in a single graph, such as the histogram matrix.

Microsoft Excel while made charting easy for those who were not empirically inclined, however, the 3-D graph options and the like made way for certain very ugly and misleading graphs. Nathan Yau's Seven Basic Rules for Making Charts and Graphs is indeed a good starting point for those who are itching to use graphs, but do not know where to begin.


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