How to increase graph resolution in Rmarkdown and more

Very useful information here.

rbokeh - R Interface to Bokeh

This new visualization package looks really promising!

Extra themes for ggplot2

Ggthemes is a new package that provides additional themes for ggplot2. It can even be used to draw a Stata-like graph. I particularly like the Tufte-style, as outlined in The Visual Display of Quantitative Information. 

Using Inkscape to Post-edit Labels in R Graphs

Here are some helpful tips.

Interaction effect plot

I am glad to find out that the "effects" package can now handle mixed effect model results from "lme4".

R Graphics Manual

Very useful web site for R graphics.

PGF/TikZ related resources

Many useful resources related to PGF/TikZ can be found here.

Wrapping text around figures in LaTeX

I found this page very helpful in showing how to create figures with text wrapping around. And this one for making tables.

I am using the LaTeX package by Bruce Donald for my next NIH proposal.

Ggplot2, some tricks

Here is how to remove the grey in the background as well as the grid, a modification of the default black/white theme.

Lattice vs. ggplot2

Both lattice and ggplot2 seem really interesting and worthy of learning. But I only have time to learn one of them, and the choice is not an easy one.

Here is an awesome reference; this blog is generally very interesting; and here is something about the "brew" package.

Useful blog

Here is another useful blog. This post regarding how to use EPS directly in LaTeX file is especially helpful.

The "tikzDevice" package

The tikzDevice package is quite amazing. Here are two graphs I just made, with (lower) and without (upper) using the tikzDevice package. The difference in quality is huge.

Since the LaTeX source file for the figure is quite large in size and may take significantly longer to compile, it makes sense to export the file into PDF file and include in the main LaTeX file in the usual way. That way, one gets the pleasing effect produced by TikZ and does not suffer from longer compilation time.

Also, the package "pgfSweave" is also very helpful if one wants to combine R sessions with LaTeX session.

Here is a tikz editor that works great on my 32-bit Ubuntu box but cannot be compiled on my 64-bit box. It can produce PDF, EPS, and PNG files directly from LaTeX code. TpX is another editor for tikz. It is currently Windows-only but a alpha version based on Lazarus is under development.

Some additional information is provided by this post.

Processing

This is a nice little toy.

Graphics using Stata vs. R

Here is an informative blog post comparing simple histogram produced using Stata and various methods using R.

Cool photo gallary: operating systems

http://www.operating-system.org/betriebssystem/_english/os-screenshots.htm

Inkscape is a handy tool

Inkscape (http://www.inkscape.org/) is a free software package for graphics. It reads a large number of graphics formats including eps and pdf, and allows one to modify them and output to a large number of different graphics formats.

Simple R figures

http://www.harding.edu/fmccown/R/

This comes very handy.

Graph with two axes

In R: http://robjhyndman.com/index.php?option=com_content&view=article&id=233:r-graph-with-two-y-axes&catid=32:mbr&Itemid=103

In Stata: http://www.ats.ucla.edu/stat/stata/library/GraphExamples/code/twobar.htm

Also, R package "plotrix" has a function "twoord.plot" designed specifically for this.

Stata and R graph examples

• Stata graph gallery: http://www.ats.ucla.edu/stat/stata/library/GraphExamples/default.htm;
• R graph gallery: http://addictedtor.free.fr/graphiques/allgraph.php