153 search results for "heatmap"

Tutorials for Learning Visualization in R

September 12, 2012
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Tutorials for Learning Visualization in R

Today's guest post comes from Nathan Yau. Nathan runs FlowingData, a site on statistics and visualization, and is the author of Visualize This. Years ago, when I started FlowingData, the purpose of the blog was to catalog and think out loud about visualization, in its many varieties. In the beginning I was talking to myself for the most part,...

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R Package Vignettes with Markdown

September 10, 2012
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What is the best resource to learn an R package? Many R users know the almighty question mark ? in R. For example, type ?lm and you will see the documentation of the function lm. If you know nothing about a package, you can take a look at the HTML help...

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omg lol brb txt l8r – Text Message Analysis, 2011-2012

September 3, 2012
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omg lol brb txt l8r – Text Message Analysis, 2011-2012

IntroductionI will confess, I don't really like texting. I communicate through text messages, because it does afford many conveniences, and occupies a sort of middle ground between actual conversation and email, but that doesn't mean that I like it. E...

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Community Detection in Networks with R

Community Detection in Networks with R

I mainly post this visualization because I think it’s pretty. It reminds a little of the work by the famous Dutch painter Mondrian. The complete matrix can be found here. The plot is a heatmap of an adjacency matrix generated by a weighted dir...

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Community Detection in Networks with R

Community Detection in Networks with R

I mainly post this visualization because I think it’s pretty. It reminds a little of the work by the famous Dutch painter Mondrian. The complete matrix can be found here. The plot is a heatmap of an adjacency matrix generated by a weighted dir...

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In case you missed it: June 2012 Roundup

July 11, 2012
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In case you missed them, here are some articles from June of particular interest to R users. The FDA goes on the record that it's OK to use R for drug trials. A review of talks at the useR! 2012 conference. Using the negative binomial distribution to convert monthly fecundity into the chances of having a baby in a...

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Color Palettes in RGB Space

June 20, 2012
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Color Palettes in RGB Space

Introduction I've recently been interested in how to communicate information using color. I don't know much about the field of Color Theory, but it's an interesting topic to me. The selection of color palettes, in particular, has been a topic I've been faced with lately. I downloaded 18 different sequential color palettes from Cynthia Brewer's

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More on birthday probabilities

June 15, 2012
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More on birthday probabilities

Last week, Joe Rickert used R and four years of US Census data to create an image plot of the relative probabilities of being born on a given day of the year: Chris Mulligan also tackled this problem with R, but this time using 20 years of Census data from 1969 to 1988. Chris extracted the birthday frequencies using...

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Pretty Correlation Map of PIMCO Funds

June 14, 2012
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Pretty Correlation Map of PIMCO Funds

As PIMCO expands beyond fixed income, I thought it might be helpful to look at correlation of PIMCO mutual funds to the S&P 500.  Unfortunately due to the large number of funds, I cannot use the chart.Correlation from PerformanceAnalytics.&nbs...

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Simulating the Birthday Problem with data derived probabilities

June 6, 2012
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Simulating the Birthday Problem with data derived probabilities

You've probably heard of the Birthday Paradox: it only takes a small gathering of people before it's quite likely that two of them share the same birthday. You can solve the problem analytically or with simulation, but usually in either case simplifying assumptions are made (no-one born on February 29, for example). Joe Rickert uses Revolution R Enterprise 6...

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