2313 search results for "MAP"

Data Manipulation with R – Spector (2008)

April 30, 2010
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Data Manipulation with R – Spector (2008)

Title: Data Manipulation with RAuthor(s): Phil SpectorPublisher/Date: Springer/2008Statistics level: N/A Programming level: Intermediate Overall recommendation: Highly recommended If there is one book that every beginning R user coming from a programming background should have, it is Spector’s Data Manipulation with R. New R users with analytic backgrounds and experience with software packages such as SAS The post Data...

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Summarising data using box and whisker plots

April 25, 2010
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Summarising data using box and whisker plots

A box and whisker plot is a type of graphical display that can be used to summarise a set of data based on the five number summary of this data. The summary statistics used to create a box and whisker plot are the median of the data, the lower and upper quartiles (25% and 75%)

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R 2.11.0 released

April 22, 2010
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The latest version of R from the R Project, R 2.11.0, is now available in source code form. Binaries for Windows, Mac and Linux will appear in your local CRAN mirror in the next few days. Some new features include: Support for rendering bitmap images in graphics devices, via a new function rasterImage() The new function vapply is like...

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Thoughts on LSPM from R/Finance 2010

April 18, 2010
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Thoughts on LSPM from R/Finance 2010

I just got back from R/Finance 2010 in Chicago. If you couldn't make it this year, I strongly encourage you to attend next year. I will post a more comprehensive review of the event in the next couple days, but I wanted to share some of my notes spec...

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The Next Big Thing: SAS and SPSS!…wait, what?

April 15, 2010
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The Next Big Thing: SAS and SPSS!…wait, what?

Thanks to the R Bloggers aggregator I came across Yihui Xie’s post on a piece currently making the rounds about statistical analysis platforms. In The Next Big Thing, AnnMaria De Mars makes the argument that R—as a statistical computing platform—is not well suited for what she views as the next big things in data

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In case you missed it: March Roundup

April 13, 2010
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In case you missed them, here are some articles from last month of particular interest to R users. We reviewed a special report in The Economist on the "Data Deluge" and the growing importance of statistical analysis in business. One section mentioned R specifically. We announced that Zack Urlocker, formerly responsible for engineering and marketing for the open-source database...

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Historical / Future Volatility Correlation Stability

April 11, 2010
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Historical / Future Volatility Correlation Stability

Michael Stokes, author of the MarketSci blog recently published a thought-provoking post about the correlation between historical and future volatility (measured as the standard deviation of daily close price percentage changes). This post is intended...

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Maximum Probability of Profit

April 9, 2010
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Maximum Probability of Profit

To continue with the LSPM examples, this post shows how to optimize a Leverage Space Portfolio for the maximum probability of profit. The data and example are again taken from The Leverage Space Trading Model by Ralph Vince. These optimizaitons take ...

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Gravity Game in R

April 8, 2010
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Gravity Game in R

So why should R only be used for ’serious’ stuff? No longer! I’ve written the following code in R which executes a little gravitational physics game. The goal of the game is simple. You supply a velocity and direction to a spaceship with the goal of getting the ship to the

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Example 7.31: Contour plot of BMI by weight and height

April 5, 2010
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Example 7.31: Contour plot of BMI by weight and height

A contour plot is a simple way to plot a surface in two dimensions. Lines with a constant Z value are plotted on the X-Y plane.Typical uses include weather maps displaying "isobars" (lines of constant pressure), and maps displaying lines of constant e...

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