April 2018

State Space AFL

April 30, 2018 | Analysis of AFL

Ever read a post and went damn! I really wonder how that would work for AFL . Well that was me a couple of weeks ago reading this fantastic post and as most people know a good post is a fantastic post when it is reproducible.
library(tidyverse)
## -- Attaching packages --------------------------------------------------------------- tidyverse 1.2.1 --
## v ggplot2 2.2.1     v purrr   0.2.4
## v tibble  1.4.2     v dplyr   0.7.4
## v tidyr   0.8.0     v stringr 1.3.0
## v readr   1.1.1     v forcats 0.3.0
## -- Conflicts ------------------------------------------------------------------ tidyverse_conflicts() --
## x dplyr::filter() masks stats::filter()
## x dplyr::lag()    masks stats::lag()
library(rjags)
{{...
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Tidying messy Excel data (Introduction)

April 30, 2018 | R on Abhijit Dasgupta

Personal expressiveness, or how data is stored in a spreadsheet When you get data from a broad research community, the variability in how that data is formatted and stored is truly astonishing. Of course there are the standardized formats that are output from machines, like Next Generation Sequencing and other ... [Read more...]

How to do Repeated Measures ANOVAs in R

April 30, 2018 | Dominique Makowski

Don’t do it The Emotion Dataset The effect of Emotion Post-hoc / Contrast Analysis Interaction Note Credits Don’t do it Ha! Got ya! Trying to run some old school ANOVAs hum? I’ll show you even better! There is now a tremendous amount of data showing the inadequacy of ...
[Read more...]

RcppArmadillo 0.8.500.0

April 30, 2018 | Thinking inside the box

RcppArmadillo release 0.8.500.0, originally prepared and uploaded on April 21, has hit CRAN today (after having already been available via the RcppCore drat repo). A corresponding Debian release will be prepared as well. This RcppArmadillo release c... [Read more...]

Microsoft R Open 3.4.4 now available

April 30, 2018 | David Smith

An update to Microsoft R Open (MRO) is now available for download on Windows, Mac and Linux. This release upgrades the R language engine to version 3.4.4, which addresses some minor issues with timezone detection and some edge cases in some statistics functions. As a maintenance release, it's backwards-compatible with scripts ... [Read more...]

Make a sculpture in LEGO from a photo, with R

April 30, 2018 | David Smith

The entrance to our office in Redmond in is adorned with this sculpture of our department logo, rendered in LEGO: We had fun with LEGO bricks at work this week. APEX is our internal team name, this was fun. Oh and we're hiring for all roles in Azure! pic.twitter.... [Read more...]

Z is for Z-Scores and Standardizing

April 30, 2018 |

Z is for Z-Scores and StandardizingLast April, I wrapped up the A to Z of Statistics with a post about Z-scores. It seems only fitting that I'm wrapping this April A to Z with the same topic. Z-scores are frequently used, sometimes when you don't even realize it. When you ...
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I’m ‘not in’ right now…

April 29, 2018 | William Doane

Checking whether an item is in a vector or not in a vector is a common task. The notation in R is a little inelegant when expressing the “not in” condition since the negation operator (!) is separated from the … Continue reading → [Read more...]

Thoughts on Using Flexdashboard

April 29, 2018 | r on Tony ElHabr

I’ve experimented with the {flexdashboard} package for a couple of things after first trying out not so long ago. In particular, I found the storyboard format to be my favorite. I used it to create the storyboard that I wrote about in a previous post about tracking the activity ...
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March 2018: “Top 40” New Package Picks

April 29, 2018 | R Views

By my count, just over 200 new packages made it to CRAN and stuck during March. The trend for specialized, and sometimes downright esoteric science packages continues. I counted 40 new packages in this class. Most, but not all of these, are focused on bio-science applications. For example, the foreSIGHT package profiled ...
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Interpretable Machine Learning with iml and mlr

April 29, 2018 | Christoph Molnar

Machine learning models repeatedly outperform interpretable, parametric models like the linear regression model. The gains in performance have a price: The models operate as black boxes which are not interpretable. Fortunately, there are many methods that can make machine learning models interpretable. The R package iml provides tools for analysing ...
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Using Shiny Dashboards for Financial Analysis

April 29, 2018 | Paul Jeffries

For some time now, I have been trading traditional assets—mostly U.S. equities. About a year ago, I jumped into the cryptocurrency markets to try my hand there as well. In my time in investor Telegram chats and subreddits, I often saw people arguing over which investments had performed ...
[Read more...]

Statistics Sunday: Conducting Meta-Analysis in R

April 29, 2018 |

Here it is, everyone! The promised 4th post on meta-analysis, and my second video for Deeply Trivial! In this video, I walk through conducting a basic meta-analysis, both fixed and random effects, in the metafor package:See these previous posts and lin... [Read more...]

Read Random Rows from A Huge CSV File

April 28, 2018 | statcompute

Given R data frames stored in the memory, sometimes it is beneficial to sample and examine the data in a large-size csv file before importing into the data frame. To the best of my knowledge, there is no off-shelf R function performing such data sampling with a relatively low computing ... [Read more...]
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