277 search results for "heatmap"

Heatmap tables done better, in Sweave and latex

July 10, 2011
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Heatmap tables done better, in Sweave and latex

  I wrote before about using heatmap tables to combine the strengths of tables and graphics for nominal data. Here is a neat approach using Sweave and latex to produce an effect like in the picture. This latex code is self-contain...

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Drawing heatmaps in R

June 24, 2011
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Drawing heatmaps in R

A while back, while reading chapter 4 of Using R for Introductory Statistics, I fooled around with the mtcars dataset giving mechanical and performance properties of cars from the early 70's. Let's plot this data as a hierarchically clustered heatmap. # scale data to mean=0, sd=1 and convert to matrix mtscaled <- as.matrix(scale(mtcars)) # create...

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ggheat : a ggplot2 style heatmap function

March 11, 2011
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ggheat  :  a ggplot2 style heatmap function

I hope the code here is fairly self-explanatory with the inset annotations. I feel this is just a bit 'prettier' than heatmap.2 and has for me the right balance of options and extensibility. I have also found it difficult to produce high quality plots...

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Heatmap tables

January 7, 2011
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Heatmap tables

I blogged earlier (http://socialdatablog.com/what-is-wrong-with-this-graph) about the well-known risks of implying a continuous data scale in a graph where there isn't one. I just produced this alternative in the form of a heatmap table...

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Animated Heatmap of WikiLeaks Report Intensity in Afghanistan

August 17, 2010
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Visualisation of Activity in Afghanistan using the Wikileaks data from Mike Dewar on Vimeo. The latest visualization of the WikiLeaks data compiled by our group is an animation of the intensity of report observations in Afghanistan over the six year period in the WikiLeaks data. Team member Mike Dewar did the vast majority of work for

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R: heatmaps with gplots

April 8, 2010
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R: heatmaps with gplots

I use heatmaps quite a lot for visualizing data, microarrays of course but also DNA motif enrichment, base composition and other things. I particular like the heatmap.2 function of the gplots package. It has a couple of defaults that are a little ugly ...

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ggplot2: Quick Heatmap Plotting

January 25, 2010
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ggplot2: Quick Heatmap Plotting

A post on FlowingData blog demonstrated how to quickly make a heatmap below using R base graphics. This post shows how to achieve a very similar result using ggplot2. Data Import FlowingData used last season’s NBA basketball statistics provided by databasebasketball.com, and the csv-file with the data can be downloaded directly from its website. >

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Web Scraping and Applied Clustering Global Happiness and Social Progress Index

April 9, 2017
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Web Scraping and Applied Clustering Global Happiness and Social Progress Index

Increasing amount of data is available on the web. Web scraping is a technique developed to extract data from web pages automatically and transforming it into a data format for further data analysis and insights. Applied clustering is an unsupervised learning technique that refers to a family of pattern discovery and data mining tools with Related Post

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In case you missed it: February 2017 roundup

March 7, 2017
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In case you missed them, here are some articles from February of particular interest to R users. Public policy researchers use R to predict neighbourhoods in US cities subject to gentrification. The ggraph package provides a grammar-of-graphics framework for visualizing directed and undirected graphs. Facebook has open-sourced the "prophet" package they use for forecasting time series at scale. A...

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Find modern, interactive web-based charts for R at the htmlwidgets gallery

March 3, 2017
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Find modern, interactive web-based charts for R at the htmlwidgets gallery

While R's base graphics library is almost limitlessly flexible when it comes to create static graphics and data visualizations, new Web-based technologies like d3 and webgl open up new horizons in high-resolution, rescalable and interactive charts. Graphics built with these libraries can easily be embedded in a webpage, can be dynamically resized while maintaining readable fonts and clear lines,...

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