All the code shown below is available in the repository of this publication: Simultaneous Optimization of Several Response Variables. The problem of optimizing several response variables When we perform an experiment in the laboratory it is usual t...

From time to time we all need some fun, so why not make some funny graphs since we are R users, yeah! This post is based on the tutorials on R CHARTS, do not forget to pick a look. Bar dogs First I want to show you how to add ...

Using R for design and analysis of results for experiments with mixtures. “Mixtures are absolutely everywhere you look. Anything you can combine is a mixture.” (chem4kids.com)   All the code and data in this post are available in the repository: Des...

A basic R tutorial for carrying out the analysis of results of response surface designs. It also discusses how to generate Box-Behnken and Central Composite designs. Any model is only an approximation   All code and data used in this post are available on GitHub: Response Surface Designs and their Analysis ...

Some basic concepts about fractional experimental designs, as well as their generation and analysis in R. All other things being equal, the simplest explanation is usually the most likely.   All code and data on this post are available on GitHub: Fr...

Some ideas related to the reproducibility of data analysis in the life science/chemistry laboratory, as well as a tutorial on how to approach reproducibility analysis with R and RStudio.   Data Analysis Reproducibility This post contains several of my opinions on the topic, and most of the content is of ...

Basic design of experiments in R for one factor and two factors designs. You can find all the code, data and results in the GitHub repository for this post: Basic design of experiments.   There is no signal without noise It never hurts to go back to basics before tackling more ...

A brief tutorial encompasing the use of PCA Maker, a web application in R made with Shiny.   The purpose of this post is present a brief tutorial about how to install and use PCA Maker. Some concepts about PCA are covered in other posts on this blog...

How to perform PCA trough singular value decomposition using R.   What is singular value decomposition? Singular value decomposition (SVD) is a factorization of a real or complex matrix which generalizes the eigendecomposition of a square normal ma...

A brief tutorial encompasing the use of DOE Maker, a web application in R made with Shiny.   The purpose of this post is present a brief tutorial about how to install and use DOE Maker, and it does not cover concepts or theoretical aspects about des...

How to perform PCA step by step using R and basic linear algebra functions and operations.   What is PCA? PCA is an exploratory data analysis based in dimensions reduction. The general idea is to reduce the dataset to have fewer dimensions and at t...

A brief tutorial about how to use Heatmap Maker, a web application in R made with Shiny.   What is Heatmap Maker? Heatmap Maker is a Shiny App that allows you to make and save cluster heatmaps as the following: Heatmap Maker has as a core the func...