1632 search results for "ggplot2"

Troubling news for the teaching of evolution

February 9, 2011
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Troubling news for the teaching of evolution

A recent survey reported in Science ("Defeating Creationism in the Courtroom, but not in the Classroom"),  suggests that high school teachers are not teaching evolution to the fullest extent, say, that grammar is being taught in the English c...

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Opinions Not Backed by Money Are Not That Believable–Updated and with R

February 8, 2011
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Opinions Not Backed by Money Are Not That Believable–Updated and with R

As an update to http://timelyportfolio.blogspot.com/2010/12/opinions-not-backed-with-money-are-not.html, I have updated the revised data, added the past two months, and translated to R. If the world really is overly bullish on stocks as some suggest, I...

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Weight Loss Predictor

February 5, 2011
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Weight Loss Predictor

Got for 2010 Xmas a very cool book called the "4 Hour Body"(thanks Jose Santos) written by Tim Ferriss who write a previous favorite of mine about productivity, the 4 hour work week.Its an interesting book, because it has a scientific approach, it ...

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Speed up your R code with C++

February 3, 2011
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Speed up your R code with C++

Hi again, Recently, Julyan blogged about allocating memory first before modifying R objects. That’s a very useful trick that applies to most programming languages. Tonight I want to blog about something a bit more complicated and more specific to R, but which can lead to massive speed-ups: interfacing C/C++ within R codes. The rationale behind

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sab-R-metrics: Some Extra Visualization Customization

January 31, 2011
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sab-R-metrics: Some Extra Visualization Customization

Last post, I described a number of ways to show your data on a scatter plot. Ricky Zanker at THT has a similar post today for those looking to get some extra exposure and another take on R programming. Today, I plan to extend on this with a little more customization. First, if you've missed...

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sab-R-metrics: Some Extra Visualization Customization

January 31, 2011
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sab-R-metrics: Some Extra Visualization Customization

Last post, I described a number of ways to show your data on a scatter plot. Ricky Zanker at THT has a similar post today for those looking to get some extra exposure and another take on R programming. Today, I plan to extend on this with a little more customization. First, if you've missed...

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R programming books (updated)

January 28, 2011
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R programming books (updated)

In a recent post, I asked for suggestions for introductory R computing books. In particular, I was looking for books that: Assume no prior knowledge of programming. Assume very little knowledge of statistics. For example, no regression. Are cheap, since they are for undergraduate students. Some of my cons aren’t really downsides as such. Rather,

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Building a Better Word Cloud

January 27, 2011
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Building a Better Word Cloud

A few weeks ago I attended the NYC Data Visualization and Infographics meetup, which included a talk by Junk Charts blogger Kaiser Fung. Given the topic of his blog, I was a bit shocked that the central theme of his talk was comparing good and bad word clouds. He even stated that the

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Estimate Probability and Quantile

January 25, 2011
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Simple root finding and one dimensional integrals algorithms were implemented in previous posts.These algorithms can be used to estimate the cumulative probabilities and quantiles.Here, take normal distribution as an example.Read More: 281 Words Totally

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Estimate Probability and Quantile

January 25, 2011
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Simple root finding and one dimensional integrals algorithms were implemented in previous posts.These algorithms can be used to estimate the cumulative probabilities and quantiles.Here, take normal distribution as an example.Read More: 281 Words Totally

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