Here you will find daily news and tutorials about R, contributed by over 750 bloggers.
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Learn R Toolkit:
It contains PowerPoint slideshows, videos, R scripts and data files to help Excel users move up to R. R code examples are provided for panel charts, conditional format, dot plot, box plots with or without points, and fully annotated histogram charts.

It is composed of 5 modules:
Module 1: Installing & Setting Up R
Module 2: Compare R and Excel Worlds
Module 3: R Script Basics
Module 4: R Charts
Module 5: Box, Dot, Histogram, Strip Charts.

Using R for Advanced Charts:
It presents examples on lattice plots, step chart, boxplot, trend chart, panel chart, etc.

Peter’s R Programming Pages:
It presents R code examples on various R plots, including 3D bar charts, matrix contours, microarray heatmaps, network graphs, scatter & pairs plots, Ramachandran (phi/psi) plots, and linear models.