This post uses ggplot2 and rCharts to modify a grouped bar chart that appeared in an article that appeared online on October 19, 2014 in Wall Street Journal’s site. The article was titled “How to Sell a Liberal-Arts Education”. The code for the Rmarkdown file that generated this post can be ... [Read more...]

[This article was first published on Yet Another Blog in Statistical Computing » S+/R, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. pkgs <- c('sas7bdat', 'betareg', 'lmtest') lapply(pkgs, require, character.only = T) df1 <- read.sas7bdat("lgd.sas7bdat") df2 <- df1[which(df1$y < 1), ] xvar <- paste("x", 1:7, sep = '', collapse = " + ") fml1 <- as.formula(paste("y ~ ", xvar)) fml2 <- as.formula(paste("y ~ ", xvar, "|", xvar)) # FIT A BETA MODEL WITH THE FIXED PHI beta1 <- betareg(fml1, data = df2) summary(beta1) # Coefficients (mean model with logit link): # Estimate Std. Error z value Pr(>|z|) # (Intercept) -1.500242 0.329670 -4.551 5.35e-06 *** # x1 0.007516 0.026020 0.289 0.772680 # x2 0.429756 0.135899 3.162 0.001565 ** # x3 0.099202 0.022285 4.452 8.53e-06 *** # x4 2.465055 0.415657 5.931 3.02e-09 *** # x5 -0.003687 0.001070 -3.446 0.000568 *** # x6 0.007181 0.001821 3.943 8.06e-05 *** # x7 0.128796 0.186715 0.690 0.490319 # # Phi coefficients (precision model with identity link): # Estimate Std. Error z value Pr(>|z|) # (phi) 3.6868 0.1421 25.95 <2e-16 [...] [Read more...]

A new maintenance release of littler is available now. The main change are a few updates and extensions to the examples provided along with littler. Several of those continue to make use of the wonderful docopt package by Edwin de Jonge. Carl Boetti... [Read more...]

I am continuing with my trying all algorithms of Laplaces Demon. It is actually quite a bit more work than I expected but I do find that some of the things get clearer. Now that I am close to the end of calculating this second batch I learned that ther... [Read more...]

Last week, with @3wen, we were working a the revised version of our work on smoothing densities of spatial processes (with edge correction). Usually, once you have revised the paper, some references were added, others were droped. But you need to spend some time, to check that all references are ... [Read more...]

I have different sets of monthly data that I want to align and evaluate once a month. The different sources report the timestamp of the monthly data differently – one reports the date without the day, another as the last business day, and another as the last day of the month. ... [Read more...]

We’re excited to announce the start of our Intro to Data Science with R two-­day corporate training session, held Nov. 6-7 in New York City! Please visit nycdatascience.com for details on the location, time, and course syllabus. The application of R in industries from banking to telecommunications ... [Read more...]

My second-favourite keynote from yesterday's Strata Hadoop World conference was this one, from Pinterest's John Rauser. To many people (especially in the Big Data world), Statistics is a series of complex equations, but a just a little intuition goes a long way to really understanding data. John illustrates this wonderfully ... [Read more...]

Highcharts is the best JavaScript chart library, I feel. By default, there is an export button which can let you save the interactive figure to PNG, JPEG, PDF and SVG format, and one important point is, you can use it in your shiny app through R package rCharts. However, there ... [Read more...]

[This article was first published on Category: R | Huidong Tian's Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want [Read more...]

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by Joseph Rickert There is something about R user group meetings that both encourages, and nourshies a certain kind of "after hours" creativity. Maybe it is the pressure of having to make a presentation about stuff you do at work interesting to a general audience, or maybe it is just ... [Read more...]

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When covering Russia and the former republics of the USSR in World Regional Geography, a key part of my material addresses the issues that some of these countries have had in their transitions from centralized to market economies. Some of these countries experienced dramatic demographic shifts after the dissolution of ... [Read more...]

I was recently asked where do I get started with Bioconductor? and thought this would be a good short post. What is BioC? Briefly, Bioconductor (Gentleman, Carey, Bates, and others, 2004) is an open source project that hosts a wide range of tools for... [Read more...]

We think of latent variables as hidden causes for the correlations among observed measures and rely on factor analysis to reveal the underlying structure. In a previous post, I borrowed an alternative metaphor from the R package qgraph and produce... [Read more...]

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Figure out how long you will live with these rules of thumb. The post Rules of thumb to predict how long you will live appeared first on Decision Science News. [Read more...]

JJ Allaire has courageously bet, time and time again, on the cutting edge of technologies.... [Read more...]

The last post demonstrated that far from being a world-beating, absolutely amazing strategy, that Harry Long’s Structural “Arbitrage”, was in … Continue reading → [Read more...]