2839 search results for "Ggplot2"

Cohort analysis with R – “layer-cake graph” (part 2)

Cohort analysis with R – “layer-cake graph” (part 2)

Continue to exploit great idea of ‘layer-cake’ graph. If you like approach I shared in previous topic, perhaps you have one or two questions we should answer. Recall “Total revenue by Cohort” chart : As total revenue depends on number of customers we attracted and on amount of money each of them spent with us, it has sense to... Read More »

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Are they happy at school? PISA data and visualisation challange @ useR!2014

June 3, 2014
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Are they happy at school? PISA data and visualisation challange @ useR!2014

I hope you have already heard about DataVis contest at useR!2014 (in case you did not, here is more information: http://www.oecd.org/pisa/pisaproducts/datavisualizationcontest.htm). As a jury member I am not going to submit any work, but I am going to encourage you to play with the data, crunch a finding and submit interesting plot. How easy is

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Collaborative lesson development with GitHub

June 2, 2014
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If you're doing any kind of scientific computing and not using version control, you're doing it wrong. The git version control system and GitHub, a web-based service for hosting and collaborating on git-controlled projects, have both become wildly popu...

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Shading between two lines – ggplot

June 1, 2014
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Shading between two lines – ggplot

First one to say geom_ribbon loses. I was plotting some data for a colleague, had two lines (repeated experiment) per person (time on the x axis) facetted by id, I thought it’d be nice to shade the area between the … Continue reading →

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Analyzing the 2011-2012 California Health Inteview Survey with R

June 1, 2014
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Analyzing the 2011-2012 California Health Inteview Survey with R

The California Health Interview Survey (CHIS) is a remarkable biannual survey of health status, care access, and demographics for California residents. The 2011-2012 public use survey data has recently been released and is freely available after registering at the CHIS site. CHIS currently offers data in SAS, Stata, and SPSS formats. However, thanks to a...

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Autocorrelation in project Tycho’s measles data

June 1, 2014
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Autocorrelation in project Tycho’s measles data

Project Tycho includes data from all weekly notifiable disease reports for the United States dating back to 1888. These data are freely available to anybody interested.I have looked at Ptoject Tycho's measles data before, general look, incidence,...

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Retrospective: Writing an O’Reilly Book

May 31, 2014
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Retrospective: Writing an O’Reilly Book

A number of people have asked me about the amount of time and effort involved in writing a book as I just completed one for O'Reilly (published in April and is available on Amazon).   The process at O'Reilly is unique in that a book is written and initially formatted on an application called...

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Cohort analysis with R – “layer-cake graph”

Cohort analysis with R – “layer-cake graph”

Cohort analysis is one of the most powerful and demanded technique available to marketers for assessing long-term trends in customer retention and calculating life-time value. If you studied custora’s university, you could be interested by amazing “layer-cake graph” they propose for Cohort analysis. Custora says: “The distinctive “layer-cake graph” produced by looking at cohorts in calendar time can... Read More »

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Mindoro Digital Elevation Map Updated

May 30, 2014
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Mindoro Digital Elevation Map Updated

Almost 2 years ago, I made a post on creating digital elevation map using R. For that post, I used the basic R plotting function to create the map. Recently, I started learning to use ggplot2 package for visualizing data. Today, I created the same map ...

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A new gitbook – learnR

May 30, 2014
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Gitbook is rather a relatively new concept on the web. It provides a user-friendly framework for authors to write and produce online books with beautiful illustrations and responsive interactions. It allows authors to write in Markdown syntax, which is very easy to learn and use, so that they can focus more on the contents they try to...

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