2179 search results for "ggplot2"

Opel Corsa Diesel Usage

June 24, 2013
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Opel Corsa Diesel Usage

I wanted to extend my car weight distribution calculation of June 16 from only 2000 to years 2000 to 2013. Unfortunately, come Sunday afternoon the code seemed too slow and not even the beginning of a post. So, I went on to another calculation I w...

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Creating a BI Dashboard: Part 1

June 23, 2013
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Creating a BI Dashboard: Part 1

Introduction A few first posts of this blog will demonstrate how to build each report hosted by the business intelligence (BI) application dashboard shown below (see Fig. 1). This application uses the following tools and technologies R – a free software environment for statistical computing and graphics, ASP.NET MVC4 – a free framework for building

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Revisualizing the best cities in the US in 2012- Shiny + googleVis = Incredibly powerful

June 23, 2013
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Revisualizing the best cities in the US in 2012- Shiny + googleVis = Incredibly powerful

This is the last time I will talk about visualizing the best cities of 2012 based on Bloomberg Businessweek's rankings. In an earlier post on this topic, interactive applications to plot bar graphs and histograms for different characteristics...

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Principal Components Analysis Shiny App

June 23, 2013
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Principal Components Analysis Shiny App

I’ve recently started experimenting with making Shiny apps, and today I wanted to make a basic app for calculating and visualizing principal components analysis (PCA). Here is the basic interface I came up with. Test drive the app for yourself using the code below or  check out the the R code HERE. Above is an example of the

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Time Is on My Side – A Small Example for Text Analytics on a Stream

June 23, 2013
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Time Is on My Side – A Small Example for Text Analytics on a Stream

Introduction and Background While my last posting was about recommendation in the context of Location Based Social Networks there are also other interesting topics regarding the analysis of unstructured data. The most established one is probably Text Analytics/Mining focusing on all sorts of text data.For me, coming from spatial analysis, these topic is relatively new but I couldn’t help noticing...

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Disposable Visual Data Explorers with Shiny – Guardian University Tables 2014

June 21, 2013
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Disposable Visual Data Explorers with Shiny – Guardian University Tables 2014

Have data – now what? Building your own interactive data explorer need not be a chore with the R shiny library… Here’s a quick walkthrough… In Datagrabbing Commonly Formatted Sheets from a Google Spreadsheet – Guardian 2014 University Guide Data, I showed how to grab some data from several dozen commonly formatted sheets in a

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ggplot Tutorial

June 21, 2013
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ggplot Tutorial

ggplot Tutorial I liked the following ggplot2 tutorial which is featured in Gabriela de Queiroz’s blog called unbiasedestimator. The tutorial looks very neatly presented and I’m sure that it will be very helpful to anyone just getting started with ggplot2 before they jump into ggplot2: Elegant Graphics for Data Analysis by Hadley Wickham or R Graphics Cookbook by...

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Datagrabbing Commonly Formatted Sheets from a Google Spreadsheet – Guardian 2014 University Guide Data

June 20, 2013
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Datagrabbing Commonly Formatted Sheets from a Google Spreadsheet – Guardian 2014 University Guide Data

So it seems like it’s that time of year when the Guardian publish their university rankings data (Datablog: University guide 2014), which means another opportunity to have a tinker and see what I’ve learned since last year… (Last year’s hack was a Filtering Guardian University Data Every Which Way You Can…, where I had a

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literacy rates using semantics and R

June 19, 2013
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literacy rates using semantics and R

(This article was first published on - R, and kindly contributed to R-bloggers) Somehow I stumbled into the world of linked open data trying to pull information easily off of a wikipedia page without having to write a customer scrapper. Enter in dbpedia, semantic technologies and some wonderful R packages take care of the back-end coding. The Research Group...

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Visualising Crime Hotspots in England and Wales using {ggmap}

June 18, 2013
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Visualising Crime Hotspots in England and Wales using {ggmap}

Two weeks ago, I was looking for ways to make pretty maps for my own research project. A quick search led me to some very informative blog posts by Kim Gilbert, David Smith and Max Marchi. Eventually, I Google'd the excellent crime weather map exa...

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