The Problem As you know in Clinical Chemistry, we are not always writing a major paper but sometimes just preparing a short-report to answer a technical question that we've encounted at work. For shorter papers, journals often have more stringent rules about how many figures you can submit and even ... [Read more...]

CRAN just accepted a bugfix release of quantmod.  The most pertinent changes were to fix getSymbols.oanda (#36) and getOptionChain.yahoo (#92).  It also includes a fix to addTRIX (#72).Oanda changed their URL format from http to https, and getSymbols.oanda did not follow the redirect.  Yahoo Finance changed the HTML for ... [Read more...]

This document contains a collection of various Shiny tricks that I commonly use or that I know many people ask about. Each link contains a complete functional Shiny app that demonstrates how to perform a non trivial task in Shiny. The complet... [Read more...]

This document contains a collection of various Shiny tricks that I commonly use or that I know many people ask about. Each link contains a complete functional Shiny app that demonstrates how to perform a non trivial task in Shiny. The complet... [Read more...]

This is the second part in the series teaching the “lubridate” package. As a short recap from the previous part, I mentioned that date/date_time formats are easily parced using the ymd set of functions (for example, dmy, ymd_h, etc). I also explained that arithmetic calculations are performed ... [Read more...]

In this post I introduce our own package RDBL, the R DataBase Layer. With this package you can manipulate data in-database without writing SQL code. The package interprets the R code and sends out the corresponding SQL statements to the database, fully transparently. To minimize overhead, the data is only ... [Read more...]

I just released a small R package that I have been working on for a while. The motivation for this package came from the observation that I kept on receiving questions about residual checks for GLMMs. The problem that people have is that they have fitted their GLMM, maybe they ... [Read more...]

I wrote my CV using \(\rm\LaTeX\). I could find that when introducing chinese characters there is a complication. You can use CJKutf8 package and compile your document using pdflatex or you can use fontspec package and compile your document using xelatex. Using pdflatex is straightforward but without further options ... [Read more...]

FOAAS upstream came out with release 1.1.0 earlier last week. Tyler Hunt was kind enough to provide an almost immediate pull request adding support for the extended capabilties. Following yesterday's upload we now have version 1.1.0 of rfoaas on CRA... [Read more...]

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This is only directly relevant to my Monash students and colleagues, but the same idea might be useful for adapting to other institutions. Some recent changes in the rmarkdown and bookdown packages mean that it is now possible to produce working papers in exactly the same format as we previously ... [Read more...]

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In this blog post, I will be introducing the meanShiftR package. meanShiftR is a rewrite of my original mean shift R package from 2013, based on the Fast Library for Approximate Nearest Neighbors (FLANN). The meanShiftR package is focused on providing to R users the most computationally efficient mean shift implementations ... [Read more...]

In this blog post, I will be introducing the meanShiftR package. meanShiftR is a rewrite of my original mean shift R package from 2013, based on the Fast Library for Approximate Nearest Neighbors (FLANN). The meanShiftR package is focused on providing to R users the most computationally efficient mean shift implementations ... [Read more...]

Instructions for using Rcpp and Roxygen2 together. This assumes that Roxygen2 is managing your namespace: DESCRIPTION In your DESCRIPTION file, add the line LinkingTo: Rcpp Also ensure that you import Rcpp, Imports: Rcpp along with all the other packages are imported in your namespace. Package Documentation Your package documentation (by [Read more...]

There's only one week left until the very first satRdays event all around the world!This is a very exciting project with great interest from the R and more general data science community -- in the past short 2 months (since we opened registration for the conference):More than 160 persons signed ... [Read more...]

In my most recent blog post I introduced the dualplot() R function, which allows you to create time series plots with two different scales on the vertical axes in a way that minimises the potential problems of misinterpretation. See that earlier post ... [Read more...]

A maintenance release of the RcppCNPy package is now on CRAN. RcppCNPy provides R with read and write access to NumPy files thanks to the cnpy library by Carl Rogers. This release just updates a few package internals such as the vignette, the DESCRIP... [Read more...]

Microsoft R Open 3.3.1, our enhanced disstribution of open source R, is now available for download for Windows, Mac, and Linux. This update upgrades the R langauge engine to version 3.3.1, streamlines the installation process, and bundles some additional packages for parallel programming. R version 3.3.1 fixes a few rarely-encountered bugs, for example ... [Read more...]

The Reshape 2 package is based on differentiating between identification variables, and measurement variables. The functions of the Reshape 2 package then “melt” datasets from wide to long format, and “cast” datasets from long to wide format. Required package: library(reshape2) Answers to the exercises are available here. Exercise 1 Set a variable ... [Read more...]