791 search results for "maps"

Trading with SVMs: Performance

December 13, 2012
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Trading with SVMs: Performance

To get a feeling of SVM performance in trading, I run different setups on the S&P 500 historical data from … the 50s. The main motif behind using this decade was to decide what parameters to vary and what to keep steady prior to running the most important tests. Treat it as an “in-sample” test

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Mapping GPS Tracks in R

December 13, 2012
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Mapping GPS Tracks in R

This is an explanation of how I used R to combine all my GPS cycling tracks from my Garmin Forerunner 305.Converting to CSVYou can convert pretty much any GPS data to .csv by using GPSBabel. For importing directly from my Garmin, I used the comman...

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Using R to refine the search result of www.finn.no

December 12, 2012
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Using R to refine the search result of www.finn.no

www.finn.no is the most popular website in Norway. It supplies a lot of features, such as booking flight tickets, finding job, renting and sales of houses, cars and other properties, etc. I just have some experience with it. I sold and bought cars, apartment and some other stuff. It’s very convenient. But just one thing I feel not convenient:...

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Four years of the Revolutions Blog

December 10, 2012
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Yesterday was the fourth anniversary of the Revolutions blog. Our first post was way back on December 9, 2008, and in the four years since we've been regularly posting about R, open source, statistics, big data, data science and other random things that happened to catch our eye. In fact, there have been 1488 posts published in the last...

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Mapping Primary Care Trust (PCT) Data, Part 1

December 7, 2012
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Mapping Primary Care Trust (PCT) Data, Part 1

The launch or official opening or whatever it was of the Open Data Institute this week provided another chance to grab a snapshot of notable folk in the community, as for example demonstrated by people commonly followed by users of the #ODIlaunch hashtag on Twitter. The PR campaign also resulted in the appearance of some

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Visualizing Baltimore with R and ggplot2: Crime Data

December 7, 2012
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Visualizing Baltimore with R and ggplot2: Crime Data

The advent of municipal open data initiatives has been both a blessing and curse for my particular brand of data nerd. On one hand, it has opened up the possibility of developing deep and useful knowledge about the places we...

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Importing Data Into R from Different Sources

December 6, 2012
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I have found that I get data from many different sources.  These sources range from simple .csv files to more complex relational databases, to structure XML or JSON files.  I have compiled the different approaches that one can use to easily access these datasets. Local Column Delimited Files This is probably the most common and

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Shiny Server – Earthshattering News

December 4, 2012
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Shiny Server – Earthshattering News

As you probably know, I am one of the strongest proponents of the Shiny package for developing interactive web applications Amongst the latest news from RStudio is that what was planned to be commercial software will now be free and Open Source (AGPLv3 license) To celebrate this momentous announcement, I have produced an Earthquake app.

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Earthquakes Over the Past 7 Days

November 29, 2012
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Earthquakes Over the Past 7 Days

This is a brief example using the maps in R and to highlight a source of data.  This is real-time data and it comes from the U.S. Geological Society.  This shows the location of earthquakes with magnitude of at least 1.0 in the lower 48 states. library(maps) library(maptools) library(rgdal) eq = read.table(file="http://earthquake.usgs.gov/earthquakes/catalogs/eqs7day-M1.txt", fill=TRUE, sep=",", header=T) plot.new()

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Hurricane Sandy Land Wind Speed and Kriging

November 28, 2012
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Hurricane Sandy Land Wind Speed and Kriging

NJ Hurricane Sandy Landfall Data These data come from the National Climatic Data Center (NCDC).  Using the above link will download all of the data collected by the NCDC on the day of Hurricane Sandy.  The data can also be obtained directly from the source at http://cdo.ncdc.noaa.gov/qclcd/QCLCD. The purpose of this post is not a discussion

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