1142 search results for "Excel"

abbreviating personality measures in R: a tutorial

March 31, 2010
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abbreviating personality measures in R: a tutorial

A while back I blogged about a paper I wrote that uses genetic algorithms to abbreviate personality measures with minimal human intervention. In the paper, I promised to put the R code I used online, so that other people could download and use it. I put off doing that for a long time, because the

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Modified Donchian Band Trend Follower using R, Quantmod, TTR -Part 2: Parameter Sweep Sensitivity over long run

March 24, 2010
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Modified Donchian Band Trend Follower using R, Quantmod, TTR  -Part 2: Parameter Sweep Sensitivity over long run

Here is a small update to the Donchian Channel type system I displayed in the last post.Fig 1. Sensitivity of Net Combined L/S Gain to parameter n.Using the S&P500 index as a proxy for the market, a simulation was run over the lifetime of the index. No...

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Font Families for the R PDF Device

March 24, 2010
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otivated by the excellent R package pgfSweave, I begin to notice the font families in my graphs when writing Sweave documents. The default font family for PDF graphs is Helvetica, which is, in most cases (I think), inconsistent with the LaTeX font styles. Some common font families are listed in ?postscript, and we can take

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Updated Site Map for Jeromy Anglim’s Blog Psychology and Statistics

March 23, 2010
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Every Six months or so I like to update the Site Mapfor my blog jeromyanglim.blogspot.com. Thus, if you're new to the blog, The Site Map provides an overview of previous blog content organised by topic. RSS Feed: http://feeds.feedburner.com/jeromyang...

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Updated Site Map for Jeromy Anglim’s Blog Psychology and Statistics

March 23, 2010
By

Every Six months or so I like to update the Site Mapfor my blog jeromyanglim.blogspot.com. Thus, if you're new to the blog, The Site Map provides an overview of previous blog content organised by topic. RSS Feed: http://feeds.feedburner.com/jeromyang...

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R Tips in Stat 511

March 22, 2010
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R Tips in Stat 511

Here are some (trivial) R tips in the course Stat 511. I’ll update this post till the semester is over. Formatting R Code Reading code is pain, but the well-formatted code might alleviate the pain a little bit. The function tidy.source() in the animation package can help us format our R code automatically. By default

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Balloon plot using ggplot2

March 19, 2010
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Balloon plot using ggplot2

Following Tal Galili example and using part of his code, I want to plot the balloonplot you can see here using R and the excellent ggplot2 package by Hadley Wickham.### I retrieve the data from the google document you can find here using Tal Galili code: ## I slightly modified Tal code to include popularity...

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Balloon plot using ggplot2

March 19, 2010
By
Balloon plot using ggplot2

Following Tal Galili example and using part of his code, I want to plot the balloonplot you can see here using R and the excellent ggplot2 package by Hadley Wickham.### I retrieve the data from the google document you can find here using Tal Galili code: ## I slightly modified Tal code to include popularity...

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R Tutorial Series: R Beginner’s Guide and R Bloggers Updates

March 15, 2010
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R Tutorial Series: R Beginner’s Guide and R Bloggers Updates

1/1/2011 Update: Tal Galili wrote an article that revisits the first year of R-Bloggers and this post was listed as one of the top 14. Therefore, I decided to make a small update to each section. I start by describing the initial series of tutorials th...

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R Tutorial Series: R Beginner’s Guide and R Bloggers Updates

March 15, 2010
By
R Tutorial Series: R Beginner’s Guide and R Bloggers Updates

1/1/2011 Update: Tal Galili wrote an article that revisits the first year of R-Bloggers and this post was listed as one of the top 14. Therefore, I decided to make a small update to each section. I start by describing the initial series of tutorials th...

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