2449 search results for "GIS"

Putting Robust Standard Errors into LaTeX Tables: An Extension of mtable

May 3, 2011
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Putting Robust Standard Errors into LaTeX Tables: An Extension of mtable

I recently discovered the mtable() command in the memisc library and its use with toLatex() to produce nice summary output for lm and glm objects in a nicely formatted table like this:Once you have your linear model objects, all you need is one command...

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Putting Robust Standard Errors into LaTeX Tables: An Extension of mtable

May 3, 2011
By
Putting Robust Standard Errors into LaTeX Tables: An Extension of mtable

I recently discovered the mtable() command in the memisc library and its use with toLatex() to produce nice summary output for lm and glm objects in a nicely formatted table like this:Once you have your linear model objects, all you need is one command...

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Treebase trees from R

May 3, 2011
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Treebase trees from R

Treebase is a great resource for phylogenetic trees, and has a nice interface for searching for certain types of trees. However, if you want to simply download a lot of trees for analyses (like that in Davies et al.), then you want to be able to access...

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Kaggle Competition Walkthrough: Introduction

May 3, 2011
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Kaggle Competition Walkthrough: Introduction

Kaggle is a site for participating in predictive analytics competitions. It is also a great resource for learning how to build powerful predictive models, and the Overfitting competition provides a good introduction to the common tools used by a predic...

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Ecological SEMs and Composite Variables: What, Why, and How

May 2, 2011
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Ecological SEMs and Composite Variables: What, Why, and How

I’m a HUGE fan of Structural Equation Modeling. Heck, I’ve even begun teaching short SEM workshops. (seriously, if you want, email me and we’ll talk). For those of you unfamiliar with the technique, it’s awesome for three main reasons. It’s a method of teasing apart direct and indirect interactions in your data. It allows you

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Parallelizing and cross-validating feature selection in R

April 29, 2011
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Parallelizing and cross-validating feature selection in R

This is an example piece of code for the Overfitting competition at kaggle.com. This method has an AUC score of ~.91, which is currently good enough for about 38th place on the leaderboard. If you read the completion forums closely, you will find code...

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RStudio is good for you

April 29, 2011
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RStudio is good for you

I was recently introduced to RStudio, a new integrated development environment for R, it is just amazing! It is free, and open, compatible with PC/Mac/Linux OSs. You can also choose to run it in the cloud, and access it from your favorite web browser. As you can see, the window divides into four in a

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Easy way to get yield curve : what you need is only "FRBData" package !

April 28, 2011
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Easy way to get yield curve : what you need is only "FRBData" package !

I made FRBData package and registerd it on CRAN.This package allow you to download financial data from FRB's website.This website provide many economical data such as consumer credit, money stock.This article show you how to use this package.(But, it has only a function about interest rate now. I will create other functions to download other macro-economical data in next version.) First,...

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Easy way to get yield curve : what you need is only "FRBData" package !

April 28, 2011
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Easy way to get yield curve : what you need is only "FRBData" package !

I made FRBData package and registerd it on CRAN.This package allow you to download financial data from FRB's website.This website provide many economical data such as consumer credit, money stock.This article show you how to use this package.(But, it has only a function about interest rate now. I will create other functions to download other macro-economical data in next version.)First,...

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Can you do better than cap-weighted equity benchmarks?

April 28, 2011
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We're on our way to Chicago for the annual conference for R users in Finance, R/Finance 2011. Revolution Analytics is proud to once again sponsor this conference, and during the sponsor lunch session at noon on Saturday, we're honoured to have Guy Yollin show how the big-data capabilities of Revolution R Enterprise can be used for quantitative finance. Here...

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