2813 search results for "gis"

Using SPARQL Query Libraries to Generate Simple Linked Data API Wrappers

January 31, 2013
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Using SPARQL Query Libraries to Generate Simple Linked Data API Wrappers

A handful of open Linked Data have appeared through my feeds in the last couple of days, including (via RBloggers) SPARQL with R in less than 5 minutes, which shows how to query US data.gov Linked Data and then Leigh Dodds’ Brief Review of the Land Registry Linked Data. I was going to post a

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Using SPARQL Query Libraries to Generate Simple Linked Data API Wrappers

January 31, 2013
By
Using SPARQL Query Libraries to Generate Simple Linked Data API Wrappers

A handful of open Linked Data have appeared through my feeds in the last couple of days, including (via RBloggers) SPARQL with R in less than 5 minutes, which shows how to query US data.gov Linked Data and then Leigh Dodds’ Brief Review of the Land Registry Linked Data. I was going to post a

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R installation + screenshots

January 30, 2013
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R installation + screenshots

Feeling faint of heart without photos depicting what to do? No worries, here they are. Go to the R website and click “Download R” under “Getting Started” Choose a place to download R. Even though we’re on the limitless and borderless interweb, choosing a location close to you helps speeds things up. Choose which R package to download based

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Maximize Your Expectations!

January 30, 2013
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Maximize Your Expectations!

A Problem A major problem in secondary data analysis is that you didn't get to decide what data was collected. Lets say you were interested in how many times a student has read the Twilight books). Specifically, you want to know how effective the ads for...

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Approaching the Zero Bound – Bonds

January 30, 2013
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Approaching the Zero Bound – Bonds

As bonds approach the artificial zero bound, where do we go next especially after the record setting +30% in 2011?  The rolling 250-day total return has rarely gone negative since the inception of the Vanguard Funds VBMFX and VUSTX.  I am int...

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Converting a list to a data frame

January 30, 2013
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There are many situations in R where you have a list of vectors that you need to convert to a data.frame. This question has been addressed over at StackOverflow and it turns out there are many different approaches to completing this task. Since I encou...

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Converting a list to a data frame

January 30, 2013
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There are many situations in R where you have a list of vectors that you need to convert to a data.frame. This question has been addressed over at StackOverflow and it turns out there are many different approaches to completing this task. Since I encounter this situation relatively frequently, I wanted my own S3 method for as.data.frame that...

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Public and Public plus Private debt to GDP

January 29, 2013
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Public and Public plus Private debt to GDP

Update 2: Put up a second graph showing debt of Spain.Update: I just read the most recent article of Stiglitz. I mostly agree. However, I'm not quite sure what he means when he says thatSpain and Ireland had fiscal surpluses and low debt/GDP ratios bef...

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Applying Tradeblotter’s Nice Work Across Manager Rather than Time

January 28, 2013
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Applying Tradeblotter’s Nice Work Across Manager Rather than Time

Ever since I saw the very helpful distribution page first presented in Download and parse EDHEC hedge fund indexes, I have used it liberally.  Now that it is has been functionalized (Visually Comparing Return Distributions), I thought I would amen...

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The "golden age" of a football player

January 28, 2013
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The "golden age" of a football player

It's been some time since my last post on football. And we're talking about european soccer here. So I finally managed to write some functions which allow me to extract player stats from www.transfermarkt.de. The site tracks lots of stats in the world of soccer. For each player, there is information about the dominant foot, height, age, the estimated...

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