Here are some useful tips on the issue. V. [Read more...]

Some of the Census 2001 data are in microsoft access files (having filename extensions .mdb). A microsoft access file can have several tables inside, each of which contains data. There is a software called mdbtools that can be used to read access files. The command mdb-tables can be used to see ... [Read more...]

From time to time, I'll complain about the weirdness of SAS, the statistical analysis program of choice for much of the pharmaceutical industry. This post is one such complaint.Why, oh why, does SAS not directly give us the asymptotic variance of the M... [Read more...]

John Verzani’s book has a title page that shows a scatterplot with histograms of x and y variables along the two axes. It is a very powerful way of looking at two distributions. The plot was generated through a function simple.scatterplot. The function is made available as part ... [Read more...]

R News 2(2) has papers on grid and lattice packages. R News 3(2) has papers on base, grid and gridBase. Essential stuff for anybody trying to master R graphics V. [Read more...]

We're pleased to announce a one day course covering static and dynamic graphics using R, ggplot and GGobi. The course will be held just before the JSM, on Saturday, 28 July 2007, in Salt Lake City. The course will be presented by Dianne Cook and Hadley... [Read more...]

Hadley Wickham’s ggplot is a very interesting package. It makes beautiful graphics, integrates well with some of the other packages to allow you to superimpose the plots of various types of estimates on plots of data. In particular, it uses colours very well. The default colour schemes are aesthetically ... [Read more...]

Use “select=c(var1,var2)” in the subset command to select var1 and var2. Use “select=-c(var1,var2)” in the subset command to drop var1 and var2. Technorati Tags: GNU-R [Read more...]

A commonly reported problem with ps2pdf is that it does not always guess the page orientation right. A neat solution is here http://allendowney.com/essays/orientation/ I just edited the gs_statd.ps to define the wide page and added an alias in my bashrc called widepdf to ... [Read more...]

Here is an interesting document on problems of using Microsoft Excel for statistical analysis. http://gcrc.ucsd.edu/biostatistics/Excel.pdf Technorati Tags: statistics, excel, microsoft [Read more...]