Images as x-axis labels (updated)
They say “if you want to find an answer on the internet, just present a wrong one as fact. Then wait.“ It didn’t take long, actually. Despite my searches while...continue reading.
They say “if you want to find an answer on the internet, just present a wrong one as fact. Then wait.“ It didn’t take long, actually. Despite my searches while...continue reading.
Open-source software is awesome. If I found that a piece of closed-source software was missing a feature that I wanted, well, bad luck. I probably couldn’t even tell if was...continue reading.
This article is originally published at https://nowosad.github.io/ Thanks for visiting r-craft.org This article is originally published at https://nowosad.github.io/ Please visit source website for post related comments.continue reading.
Can you predict the output from this code? Okay, the first bit is straightforward; it’s a function that puts two string together into one. The next two lines appear to...continue reading.
I got a note from Karim Lahrichi, who even thinks about math when he’s supposed to be drinking beer. The bar puzzle they were trying to solve goes like this: Using all...continue reading.
Recent research by Marcos Lopez de Prado aims to improve Markowitz’s Critical Line Algorithm (CLA). The (currently patent-pending) methodology proposes the Hierarchical Risk Parity (HRP) approach which aims to tackle...continue reading.
Summary Recently new research has appeared on using a co-movement measure to construct the covariance matrix as part of the Modern Portfolio Theory (MPT) style portfolio construction. Below is the...continue reading.
I was recently at a R users meetup where Hadley Wickham talked about data wrangling. He showed some interesting stuff! Did you know that you can put a data frame...continue reading.
I have a dream: a scientific editor that would be suitable for editing scientific papers. Currently, Word is king. There is no way around it: everybody has it, everybody uses...continue reading.
“How can I make my code faster?” If you write R code, then you’ve probably asked yourself this question. A profiler is an important tool for doing this: it records...continue reading.
Hadley Wickham’s ggplot2 version 2.0 revolution, at the end of 2015, triggered many crashes in dependent R packages, that finally led to deletions of few packages from The Comprehensive R...continue reading.
The recent flare-up in discussions on p-values inspired me to conduct a brief simulation study. In particularly, I wanted to illustrate just how p-values vary with different effect and sample sizes. Here are...continue reading.
Since it appears that SAS and R might give slightly different B-G test results, I spent a couple hours on duplicating the logic of B-G test implemented in SAS Autoreg...continue reading.
Have you seen all those attractive green badges on other people’s R packages and thought, “I want a lovely green badge!” Always a nice feeling when Travis manages to actually...continue reading.
This post is about an R Markdown html document format that provides the ability to lazily load plot outputs in R Markdown-generated html. Since my last post I’ve had my...continue reading.
This post is about an R Markdown html document format that provides the ability to lazily load plot outputs in R Markdown-generated html. Since my last post I’ve had my...continue reading.
We use network visualizations to look into the voting patterns in the current German parliament. I downloaded the data here and all figures can be reproduced using the R code...continue reading.
Today we’re excited to announce flexdashboard, a new package that enables you to easily create flexible, attractive, interactive dashboards with R. Authoring and customization of dashboards is done using R...continue reading.
Rationale This Fall, I am teaching graduate-level biostatistics. I have not had the good fortune of teaching many graduate-level offerings, and I am really excited to do so. A team...continue reading.
I recently launched a video series about “pandas”, a popular Python library for data analysis, manipulation, and visualization. But for those of you who want to learn pandas and prefer...continue reading.