Publications by H.Ishimaru

Japan Quake Map

31.10.2011

Japan Quake Map with R, ggplot2, and FFmpeg 1 Introduction As a follow-up to ‘Analysis of Japanese Earthquakes Data’, I sought to produce a map including infomation about epicenter and magnitude. Last article have contributed to visualize the frequency of earthquakes, on the other hand I have attempted to visualize infomation about epicenter...

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Regression Analysis

11.12.2011

Regression Analysis ~about Long term data of earthquakes~ 1 Introduction I have attempted gaining a deeper understanding of seismic activity. As one of the approach, I showed a “Japan Quake Map” on R-bloggeres, which visualized infomation about epicenter and magnitude of earthquakes. Please pay attention before and after “Tohoku Earthquake...

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CalendaR 2012 with ggplot2

14.12.2011

Season’s Greetings Hi, dear R-bloggers and its readers. Here in Japan it’s very cold now. The end of one year is coming soon. How was your year 2011 ? As for me, I started to learn R on september this year, and found it very enjoyable. So I posted a few blog on R-bloggers, e.g. “Japan Quake Map“. By the way, I made a “CalendaR 2012 wit...

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cRazydays 2012 with ggplot2

17.12.2011

Season’s Greetings Hi, dear R-bloggers and its readers. Here in Japan it’s very cold now. The end of one year is coming soon. How was your year 2011 ? As for me, I started to learn R on september this year, and found it very enjoyable. So I posted a few blog on R-bloggers, e.g. “Japan Quake Map“. By the way, I made a “cRazydays 2012″...

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Weak Law of Large Numbers

31.01.2012

1 Description The weak law of large numbers is a result in probability theory also known as Bernoulli’s theorem. According to the law, the mean of the results obtained from a large number of trials is close to the population mean. Let be a sequence of independent and identically distributed random variables, each having a mean and variance ...

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Japan Quake Map 2010-2011

02.02.2012

1 Introduction “The 3.11 Tohoku Earthquake in Japan”, It did serious damage to Japan. I have attempted gaining deeper a understanding of seismic activity after showing “Japan Quake Map” on R-bloggeres. This posting is a summary about earthquakes in Japan on 2011. 2 Japan Quake Map The movie of “Japan Quake Map 2010-2011″ was updated ...

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Bubble Plots (ggplot2)

08.07.2012

1 Introduction Rarely have I seen a three dimension graph including time, value, and volatility. It is essential on risk management. Used wisely, ggplot2 is a powerful and beautiful tool. We can easily make many dimension graphs with ggplot2. 2 S&P500 and VIX (base) The S&P500(Standard & Poor’s 500 Stock Index) is a capitalization-weighted inde...

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