Publications by mareviv
Install R in Android, via GNURoot -no root required!
Playing with my tablet some time ago, I wondered if installing R could be possible. You know, a small android device “to the power of R”… After searching on Google from time to time, I came across some interesting possibilities: R Instructor, created “to bridge the gap between authoritative (but expensive) reference textbooks and free bu...
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Happening just now… 6th Conference of the R Spanish User Community
The R-Spain Conferences have been taking place since 2009 as an expression of the growing interest that R elicits in many fileds. The organisers are the Comunidad R Hispano (R-es). The community supports many groups and initiatives aimed to develop R knowledge and widen its use. To attend the talks by streaming (they are in Spanish) you must regi...
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R/Shiny for clinical trials: simple randomization tables
One of the things I most like from R + Shiny is that it enables me to serve the power and flexibility of R in small “chunks” to cover different needs, allowing people not used to R to benefit from it. However, what I like most is that’s really fun and easy to program those utilities for a person without any specific programming backgrou...
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Quick wordclouds from PubMed abstracts – using PMID lists in R
Wordclouds are one of the most visually straightforward, compelling ways of displaying text info in a graph. Of course, we have a lot of web pages (and even apps) that, given an input text, will plot you some nice tagclouds. However, when you need reproducible results, or getting done complex tasks -like combined wordclouds from several files-,...
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Starting a Rmarkdown Blog with Bookdown + Hugo + Github
Finally, -after 24h of failed attempts-, I could get my favourite Hugo theme up and running with R Studio and Blogdown. All the steps I followed are detailed in my new Blogdown entry, which is also a GitHub repo. After exploring some alternatives, like Shirin’s (with Jekyll), and Amber Thomas advice (which involved Git skills beyond my basic ab...
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Taming exam results in pdf with pdftools
You can also check this post, written in #blogdown, here: taming-exam-results-with-pdf. Introduction There are several ways to mine tables and other content from a pdf, using R. After a lot of trial & error, here’s how I managed to extract global exam results from an international, massive, yearly examination, the EDAIC. This is my first use ...
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A minimal Project Tree in R
You can also check this post, written in #blogdown, here: minimal-project-tree-r. Introduction The last two days arrived at my twitter feed some discussions on how bad are the following sentences at the beginning of your R script/notebook, sparked by @JennyBryan’s slides at the IASC-ARS/NZSA Conference: setwd() and rm(list = ls()) Blog post e...
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An introduction to joint modeling in R
By J Espasandin, O Lado, A Bouzas, A Baluja. You can also check this post, written in #blogdown, here: intro-joint-modeling-r. These days, between the 19th and 21st of February, has taken place the learning activity titled “An Introduction to the Joint Modeling of Longitudinal and Survival Data, with Applications in R” organized by the Inte...
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R Blogdown Setup in GitHub (2)
An updated tutorial to set up a blogdown blog Git & GitHub repos RStudio and blogdown setup Customising paths and styles Modify config.toml file Custom css Custom javascript Site build with blogdown Deploying the site Updating the local git repository Pushing to GitHub Add R code A new post in blogdown Deploying the site wit...
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Playing with post-hoc power with R – why we shouldn’t do it
You can also check this post, written in #blogdown, here: playing-with-post-hoc-power. Current state of the matter The reason for bringing this here is that I witnessed an interesting exchange some time ago, regarding one article and their use of post-hoc power, pinpointed by @ADAlthousePhD: Hi @scottlemaire, I would like to issue a public exp...
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