2258 search results for "Map"

Analyzing Twitter Data in R – Part 1

February 8, 2012
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I recently began using the TwitteR package in R to examine my tweeting patterns. One of my first projects was to identify each of my Twitter followers, where they were located, how many tweets they had, and then plot their location on a map using a bubble which was related to their total number of

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"R": PLS Regression (Gasoline) – 005

February 8, 2012
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"R": PLS Regression (Gasoline) – 005

Let´s see know how to plot the scores for the 3 PLS Components:  We can see the explained variance from each component in the diagonal.We can get it from R with:> explvar(gas1)   Comp 1      Comp 2  &nbs...

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What are the most popular bike routes in London?

February 7, 2012
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What are the most popular bike routes in London?

James Cheshire, R user and lecturer at the UCL Centre for Advanced Spatial Analysis, created this map of the most trafficked cycle routes in London: Click to enlarge, it's a gorgeous chart. The bicycle traffic data comes from London's public cycle-hire facility, which currently is only available in central London (which is why you don't see much activity in...

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Multiple Factor Model – Building Fundamental Factors

February 4, 2012
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Multiple Factor Model – Building Fundamental Factors

This is the second post in the series about Multiple Factor Models. I will build on the code presented in the prior post, Multiple Factor Model – Fundamental Data, and I will show how to build Fundamental factors described in the CSFB Alpha Factor Framework. For details of the CSFB Alpha Factor Framework please read

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Berlin’s children

February 4, 2012
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Berlin’s children

Few years ago, a newspaper claimed the block I live in — Prenzlauer Berg in Berlin — is the most fertile region in Europe. It was a hoax, as this (German) newspaper article points out. (The article has become quite famous because it coined the term Bionade Biedermeier to describe the life style in this area.)However,...

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Coming R meetings in Paris

February 4, 2012
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Coming R meetings in Paris

If you live in Paris and are interested in R, there will be two meetings for you this week. First a Semin-R session, organized at the Muséum National d’Histoire Naturelle on Tuesday 7 Feb (too bad, the Museum is closed on Tuesdays). Presentations will be about colors, phylogenies and maps, while I will speak about

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Landscape Metrics with R, SDMTools, ImageJ and Bio7

February 2, 2012
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01.02.2012 Landscape metrics were developed to analyze spatial patterns of landscapes (e.g. composition and spatial arrangement). In R it is possible to calculate these metrics with the “SDMTools” package. Bio7 offers an easy to use interface to R and ImageJ and can use these tools to simplify a workflow to analyze image data (e.g. vegetation

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R is the easiest language to speak badly

February 1, 2012
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R is the easiest language to speak badly

I am amazed by the number of comments I received on my recent blog entry about "by", "apply" and friends. I had started my post by pointing out that R is a language. Well indeed, I have come to the conclusion, that it is a language with lots of irregul...

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MINE: Maximal Information-based NonParametric Exploration

February 1, 2012
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MINE: Maximal Information-based NonParametric Exploration

There was a lot of buzz in the blogosphere as well as the science community about a new family of algorithms that are able to find non-linear relationships over extremely large fields of data. What makes it particularly useful is that the measure(s) it...

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A Short Example with R-Package osmar..

January 26, 2012
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A Short Example with R-Package osmar..

Following up my last post in which I praised the capabilities of the osmar-package I give a short example...ps: You can also find this example at GitHub HERE.library(osmar) # this pulls the data from the OSM-Api:mydistrict <- get_osm(relation(85647)...

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