In this post, I will illustrate the use of prediction intervals for the comparison of measurement methods. In the example a new spectral method for measuring whole blood hemoglobin is compared with a reference method. First, let’s start with discussing the large difference between a confidence interval and a ... [Read more...]

On Monday, we learned about a serious issue with the installer for Microsoft R Open on Linux-based systems. (Thanks to Norbert Preining for reporting the problem.) The issue was that the installation and de-installation scripts would modify the system shell, and did not use the standard practices to create and ... [Read more...]

[Read more...]

The R package wrapr 1.5.0 is now available on CRAN. wrapr includes a lot of tools for writing better R code: let() (let block) %.__% (dot arrow pipe) build_frame() / draw_frame() ( data.frame builders and formatters ) qc() (quoting concatenate) := (named map builder) %?% (coalesce) NEW! %.|% (reduce/expand args) NEW! uniques() (safe unique() ... [Read more...]

[Read more...]

This report describes an application of the ‘rasterize’ package for R. We rasterize (just) the line segments of two chromatograms in order to render one ... [Read more...]

[Read more...]

[Read more...]

[Read more...]

[Read more...]

[Read more...]

[Read more...]

The Fantasy Football Analytics API allows developers to programmatically access our data in JSON format. Users must pay for a standalone subscription to obtain a unique API key granting access.[...] The post API Instructions appeared first on Fantasy Football Analytics. [Read more...]

[Read more...]

[Read more...]

- It is with great pleasure that I announce the second edition of the portuguese version of my book, Processing and Analyzing Financial Data with R. This edition updates the material significantly. The portuguese version is now not only in par with the international version of the book, but much more! ... [Read more...]

Overview R 3.5.0 was released a few weeks ago. As it changes some (important) internals, packages installed with a previous version of R have to be rebuilt. This was known and expected, and we took several measured steps to get R binaries to everybody without breakage. The question of but how ... [Read more...]

It is with great pleasure that I announce the second edition of the portuguese version of my book, Processing and Analyzing Financial Data with R. This edition updates the material significantly. The portuguese version is now not only in par with the i... [Read more...]

[Read more...]

The problem Some time ago, I started a blog. I actually did not post a whole lot of stuff though. I was using Jekyll, but my set-up was rather brittle and there were a few problems: I could not use R Markdown directly. I always had to knitr manually t... [Read more...]