Monthly Archives: March 2009

Comparison of different circle graphs

March 24, 2009
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See in my Picasa here and get corrplot package here. Thanks Bob O'Hara's advice:)I found people's tastes differ, so input parameter col (fill color) and bg (background color) was added in new edition. What is more, now you can order your variables usin...

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Streaming Hadoop Data Into R Scripts

March 23, 2009
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Streaming Hadoop Data Into R Scripts

Along the lines of Mongo Measurement Requires Mongo Management, the HadoopStreaming package on CRAN provides utilities for applying R scripts to Hadoop streaming. Hadoop is used on Amazon's EC2.

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American Immigration Trends

March 22, 2009
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The New York Times has a beautiful visualization of immigration trends in the United States since 1880. I highly recommend spending a few minutes playing with the interactive display.

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India Census 2001 – Part 1

March 22, 2009
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India Census 2001 – Part 1

I was trying – for the last few weeks – to get the 2001 Indian census data. Alas the census website is under construction. But fortunately the Internet rewind button works! Thankfully the literacy data was online there. The raw data is available here. I cleaned up the data so that it is easy to

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Play Sliding Puzzles on R

March 22, 2009
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The code was shared on my google docs. See it here.

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Play Sliding Puzzles on R

March 22, 2009
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The code was shared on my google docs. See it here.

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Progress bar in R

March 21, 2009
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Nice summary on how to use progress bars in R. I am posting this here in order to have a note for later searches.

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Progress bar in R

March 21, 2009
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Nice summary on how to use progress bars in R. I am posting this here in order to have a note for later searches.

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Dianne Reeves at Dominican

March 16, 2009
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Yesterday afternoon, we had another chance to see Dianne Reeves (wikipedia). This time, it almost felt like she came to us as she was headlining at the annual trustee benefit concert at Dominican University, a small college about a mile from our place. And as in 2007 and 2003, she did not disappoint. Great voice, great stage presence. Highly recommended.

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R: Monitoring the function progress with a progress bar

March 16, 2009
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R: Monitoring the function progress with a progress bar

Every once in while I have to write a function that contains a loop doing thousands or millions of calculations. To make sure that the function does not get stuck in an endless loop or just to fulfill the human need of control it is useful to monitor the progress. So  first I tried the

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