2925 search results for "GIS"

Yen and JGBs Short-Term vs Long Term

February 1, 2013
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Yen and JGBs Short-Term vs Long Term

I have read some articles arguing that the recent move in the Japanese Yen is overdone.  However, considering the short-term without regard to the long-term context is naïve and potentially dangerous.  Although I do not have significant proo...

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Taking Expectations to the Next Level

January 31, 2013
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Taking Expectations to the Next Level

Higher Expectations I came across this post on Thursday and found it to be quite interesting. Clearly rental prices vary according to where you live. That isn't too surprising. I started thinking a bit more about it and thought that Boston and the nearby communities would have to...

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Using Line Segments to Compare Values in R

January 31, 2013
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Using Line Segments to Compare Values in R

Sometimes you want to create a graph that will allow the viewer to see in one glance:The original value of a variableThe new value of the variableThe change between old and newOne method I like to use to do this is using geom_segment and geom_poin...

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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
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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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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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