893 search results for "maps"

3D Mapping in R

May 8, 2013
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3D Mapping in R

This tutorial has been kindly contributed by Robin Edwa

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Incomplete Data by Design: Bringing Machine Learning to Marketing Research

May 6, 2013
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Incomplete Data by Design: Bringing Machine Learning to Marketing Research

Survey research deals with the problem of question wording by always asking the same question.  Thus, the Gallup Daily Tracking is filled with examples of moving averages for the exact same question asked precisely the same way every day. &nb...

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… ridiculously photogenic factors (heatmap with p-values)

May 5, 2013
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… ridiculously photogenic factors (heatmap with p-values)

Some months ago, I had to explore a vast amount of categorical variables before making some multivariate analyses. One good way to know your raw data, to make new hypotheses…etc, is to calculate some pairwise “crude” chi-square tests of independence … Sigue leyendo →

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GSoC Proposal 2013: Biodiversity Visualizations using R

April 29, 2013
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GSoC Proposal 2013: Biodiversity Visualizations using R

I am applying for Google Summer of Code 2013 with this “Biodiversity Visualizations using R” proposal. I am posting this idea to get feedback and suggestions from Biodiversity Informatics community.

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GSoC Proposal 2013: Biodiversity Visualizations using R

April 29, 2013
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GSoC Proposal 2013: Biodiversity Visualizations using R

I am applying for Google Summer of Code 2013 with this “Biodiversity Visualizations using R” proposal. I am posting this idea to get feedback and suggestions from Biodiversity Informatics community.

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The Financial Crisis on Tape Part II

April 26, 2013
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The Financial Crisis on Tape Part II

EDIT: I am aware of some browsers failing to load the github code below. I will try to improve this as soon as possible. Until then it may work better on www.joesdatadiner.com than at http://www.r-bloggers.com/. Finally all the code is availa...

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FasteR! HigheR! StrongeR! – A Guide to Speeding Up R Code for Busy People

April 25, 2013
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FasteR! HigheR! StrongeR! – A Guide to Speeding Up R Code for Busy People

This is an overview of tools for speeding up your R code that I wrote for the Davis R Users’ Group. First, Ask “Why?” It’s customary to quote Donald Knuth at this point, but instead I’ll quote my twitter buddy Ted Hart to illustrate a point: I’m just going to say it.I like for loops in #Rstats,...

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Gridding data for multi-scale macroecological analyses

April 22, 2013
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Gridding data for multi-scale macroecological analyses

These are materials for the first practical lesson of the Spatial Scale in Ecology course. All of the data and codes are available here. The class covered a 1.5h session. R code for the session is also at the end…Read more →

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Programmatically Download CORINE Land Cover Seamless Vector Data with R

April 21, 2013
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Programmatically Download CORINE Land Cover Seamless Vector Data with R

Thanks to a helpful SO-Answer I was able to download all CLC vector data (43 zip-files) programmatically:require(XML)path_to_files dir.create(path_to_files)setwd(path_to_files)doc urls # function to get zip file namesget_zip_name # function to plug into sapplydl_urls # download all zip-filessapply(urls, dl_urls)# function for unzippingtry_unzip # unzip all files in dir and delete them afterwardssapply(list.files(pattern = "*.zip"),...

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R: Streets of France

April 19, 2013
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R: Streets of France

I was Inspired from Ben Frys all Streets project. There he plotted all streets of the United States of America (about 240 million segments). I tried this first for the countries in Europe, France has about 22 million segments, with the goal to get an all street map of Europe. My data source originate from the OpenStreetMap project and was...

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