1831 search results for "ggplot2"

The R apply function – a tutorial with examples

July 2, 2011
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Today I had one of those special moments that is uniquely associated with R. One of my colleagues was trying to solve what I term an 'Excel problem'. That is, one where the problem magically disappears once a programming language is employed. Put simpl...

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Beating Kenneth French Small – High

June 30, 2011
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Beating Kenneth French Small – High

With 148 pageviews over the last 24 hours, my post Kenneth French Gift to the Finance World has been popular relative to most of my other posts.  I think the popularity is due to Kenneth French’s notoriety and the amazing outperformance of Small...

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Kenneth French Gift to the Finance World

June 29, 2011
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Kenneth French Gift to the Finance World

Kenneth French gives one of the best gifts to the finance world at his website http://mba.tuck.dartmouth.edu/pages/faculty/ken.french/data_library.html.  I am surprised I have waited so long to write a post about this wonderful resource.  Aft...

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Visualizing Periodic Data

June 28, 2011
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Yesterday the Princeton machine learning reading group went through a paper by Tukey on “Some graphic and semigraphic displays”. One issue we talked about at length was Tukey’s idiosyncratic approach to visualizing periodic data in a circular format to emphasize the connections between the “start” and the “end” of the data set. Allison Chaney pointed

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Monitoring Sources of Bond Returns with ML/BAC Corporate OAS and CPI

June 28, 2011
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Monitoring Sources of Bond Returns with ML/BAC Corporate OAS and CPI

In response to the nice comment requesting an update to Monitoring Sources of Bond Return and also longer history, I thought I would update the original and then rerun with CPI to give a longer time series.  For even longer history back to 1919, s...

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Bonds Risk and Return by Rating

June 27, 2011
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Bonds Risk and Return by Rating

As an extension to the Bond Market as a Casino Game series and Historical Sources of Bond Returns-Comparison of Daily to Monthly, I thought a ggplot of risk and return by decade and Moody’s Rating might be helpful.  Anyone who has read those oth...

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NHL Statistics – Goals scored by age

June 26, 2011
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NHL Statistics – Goals scored by age

NHL Statistics, part 1 Goals scored by age Data Twirling blog gave instructions to how to get NHL statistics data from the website and I saw an opportunity to learn R and statistics with help of data I know and … Continue reading →

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Confidence, Ending Equity, and What I Can Do as the Money Manager

June 24, 2011
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Confidence, Ending Equity, and What I Can Do as the Money Manager

I wrote this as my quarterly commentary, but compliance blocked it because they said I was implying that I am Warren Buffett or I can replicate Warren Buffett.  Anyways, I thought I should share it as a general discussion piece.  More than on...

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Multiple plots in R: lesson zero

June 24, 2011
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Multiple plots in R: lesson zero

Today, in one of my more productive days, I managed to create a sleek R script that plotted several histograms in a lattice, allowing for easy identification of the underlying trend. Although the majority of the time taken consisted of collecting the data and making various adjustments, it took a not inconsiderable amount of work to write the...

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Table hockey and statistics, part 1

June 23, 2011
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Table hockey and statistics, part 1

Two hobbys combined I’ve been playing table hockey for little over 8 years now and since the very beginning I’ve been interested in statistics and different software we use while organising tournaments and seasons. I’ve been writing few softwares for … Continue reading →

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