2839 search results for "ggplot2"

Analyzing Microbial Growth with R

April 9, 2014
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Analyzing Microbial Growth with R

In experimental evolution research, few things are more important than growth. Both the rate of growth and the resulting yield can provide direct insights into a strain or species’ fitness. Whether one strain with a trait of interest can outgrow (and outcompete) another that possesses a variation of that trait often depends primarily on the fitnesses of the two...

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Get notified when R packages update

April 8, 2014
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Get notified when R packages update

Today’s highly active R user base is developing, re-developing, and releasing R packages at a never-before-seen rate. While this is fantastic news for the R community as such, it inevitably also causes growing pains as mentioned before. One of the often cited problems is the painful and time-consuming task to keep track of changes and version updates of

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Earthquake Magnitude / Depth Chart

April 7, 2014
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Earthquake Magnitude / Depth Chart

I am working on a project related to secondary effects of earthquakes. To guide me in the analysis I need a chart showing the location, magnitude and depth of recent earthquakes. There are a host of such charts available already, but since I had the required data on hand, it seemed like a good idea

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Author inflation in academic literature

April 6, 2014
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Author inflation in academic literature

There seems to be a general consensus that author lists in academic articles are growing. Wikipedia says so, and I’ve also come across a published letter and short Nature article which accept this is the case and discuss ways of … Continue reading →

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Looking at Measles Data in Project Tycho, part II

April 6, 2014
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Looking at Measles Data in Project Tycho, part II

Continuing from last week, I will now look at incidence rates of measles in the US. To recap, Project Tycho contains data from all weekly notifiable disease reports for the United States dating back to 1888. These data are freely available to any...

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The Collatz Fractal

April 4, 2014
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The Collatz Fractal

It seems to me that the poet has only to perceive that which others do not perceive, to look deeper than others look. And the mathematician must do the same thing (Sofia Kovalevskaya) How beautiful is this fractal! In previous posts I colored plots using module of complex numbers generated after some iterations. In this

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Kaplan-Meier plots using ggplots2 (updated)

April 1, 2014
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Kaplan-Meier plots using ggplots2 (updated)

About 3 years ago I published some code on this blog to draw a Kaplan-Meier plot using ggplot2. Since then, ggplot2 has been updated (from 0.8.9 to 0.9.3.1) and has changed syntactically. Since that post, I have also become comfortable with Git and Github. I have updated the code, edited it for a small error,

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Adding Annotation to R Objects

April 1, 2014
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Adding Annotation to R Objects

When you take a photograph, you can include the date in the image, so you remember when you created it.  (In fact, under EXIF format, it’s stored in the image file anyway, even if it doesn’t appear in the picture.)  Wouldn’t it be nice to make annotations in the objects you create under R? For

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Adding Annotation to R Objects

April 1, 2014
By
Adding Annotation to R Objects

When you take a photograph, you can include the date in the image, so you remember when you created it.  (In fact, under EXIF format, it’s stored in the image file anyway, even if it doesn’t appear in the picture.)  Wouldn’t it be nice to make annotations in the objects you create under R? For

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Stata Fully Mapped into R

April 1, 2014
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Stata Fully Mapped into R

Hello all of you Stata loving statistical analysts out there!  I have great news.  I am finally nearly done with the package I have been working on which provides the mechanism for Stata users to seamlessly move from Stata to R though use of ...

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