In this blog post, I present a paper that has really interested me for a long time. This is part2, where I will briefly present the model of the paper, and try to play around with the data. If you haven’t, I suggest you read part 1 where I provid...

In our last post, we looked at one measure of risk-adjusted returns, the Sharpe ratio, to help our hero decide whether he wanted to alter his portfolio allocations. Then, as opposed to finding the maximum return for our hero’s initial level of risk,...

In R, the drc package represents one of the main solutions for nonlinear regression and dose-response analyses (Ritz et al., 2015). It comes with a lot of nonlinear models, which are useful to describe several biological processes, from plant growth to bioassays, from herbicide degradation to seed germination. These models are ...

In our last post, we looked at one measure of risk-adjusted returns, the Sharpe ratio, to help our hero decide whether he wanted to alter his portfolio allocations. Then, as opposed to finding the maximum return for our hero’s initial level of risk, we broadened the risk parameters and ...

Disclaimer: I have no affiliation with Microsoft’s GitHub, GitLab, CodeCademy or D2L team.

Two weeks ago, I was fortunate to attend my very first Rstudio conference. Spoiler: it was an amazing event - packed to the brim with new ideas, tools, impressions, and most important of all: smart and kind people. This was the first time that San F...

Learn how to access APIs using your R programming skills in this free tutorial covering how to get data from NASA's free ISS API. The post R API Tutorial: Getting Started with APIs in R appeared first on Dataquest.

Via Digg:This data visualization, put together by takeasecond on Reddit, shows the tallest building in all 50 states in 2020. As the graph demonstrates, the current tallest building in America is New York's One World Trade Center at 1,776 feet tall. In...

In this post we’d like to introduce you to our new R package shinyMatrix. It provides you with an editable matrix input field for shiny apps. Use Cases for Matrices in Shiny We have been developing shiny apps for quite some years now. A problem we stumbled upon multiple ...

Two weeks ago, I was fortunate to attend my very first Rstudio conference. Spoiler: it was an amazing event - packed to the brim with new ideas, tools, impressions, and most important of all: smart and kind people. This was the first time that San F...

What is clustering analysis? Application 1: Computing distances Solution k-means clustering Application 2: k-means clustering Data kmeans() with 2 groups Quality of a k-means partition nstart for several initial centers and better stability kmeans() with 3 groups Optimal number of clusters Elbow method Silhouette method Gap statistic method NbClust() Visualizations Manual application and verification ...

What is clustering analysis? Application 1: Computing distances Solution k-means clustering Application 2: k-means clustering Data kmeans() with 2 groups Quality of a k-means partition nstart for several initial centers kmeans() with 3 groups Manual application and verification in R Solution by hand Solution in R Hierarchical clustering Application 3: hierarchical clustering Data Solution by ...

Harrison Schramm, CAP, PStat, is a Senior Fellow at the Center for Strategic and Budgetary Assessments. In this short piece, I’m going to discuss a fun photography project I did over the winter using R. I’m also going to touch on some of the implications of the R ...

Our purpose is to build the quarterly foreign demand for France, Germany, Italy and Spain. To construct these series we use data from DBnomics, through the rdbnomics package. All the code is written in R, thanks to the RCoreTeam (2016) and RStudioTeam (2016). For each country, we proceed in three steps: we ...

Our purpose is to build the quarterly foreign demand for France, Germany, Italy and Spain. To construct these series we use data from DBnomics, through the rdbnomics package. All the code is written in R, thanks to the RCoreTeam (2016) and RStudioTeam (2016). For each country, we proceed in three steps: we ...