When searching for a solution where I could store some flat files as a database, Notion came up. The nice thing about it is that it offers an API to most of its functionality. At the time of this writing this is still in beta, but hopefully it will bec... [Read more...]

When I tried to compile RSQLite from source on Fedora 34, I was awaited by this error message. Error installing package 'RSQLite': =================================== * installing to library ‘/.../renv/staging/1’ * installing *source* package ‘RSQLite’ ... ** package ‘RSQLite’ successfully unpacked and MD5 sums checked ** using staged installation ** libs g++ -m64 -std=gnu++11 -I"/usr/include/R" ... [Read more...]

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Using package in R is easy. You install from CRAN using install.packages("packagename"), it resolves dependencies and you're good to go. What R natively doesn't handle so well is installing a particular package version without jumping through hoops. Technically you need the source file of the package version you ... [Read more...]

Using package in R is easy. You install from CRAN using install.packages("packagename"), it resolves dependencies and you're good to go. What R natively doesn't handle so well is installing a particular package version without jumping through hoops. Technically you need the source file of the package version you ... [Read more...]

Imagine you have a function that only takes one argument, but you would really like to work on a vector of values. A short example on how function Vectorize() can accomplish this. Let's say we have a data.frame xy [Read more...]

Imagine you have a function that only takes one argument, but you would really like to work on a vector of values. A short example on how function Vectorize() can accomplish this. Let's say we have a data.frame xy [Read more...]

Known user identity when building shiny apps can sometimes come really handy. While you can implement your own user login, for instance using cookies, you can also use some of the services which authenticate a user for you, such as Google. This way, yo... [Read more...]

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If you need to have authentication of users in your application, you could invent the proverbial warm water by implementing register, login, logout and other features. Or, you could outsource part of that functionality to well established establishments such as Google, Facebook, Github and other. In addition to knowing the ... [Read more...]

If you need to have authentication of users in your application, you could invent the proverbial warm water by implementing register, login, logout and other features. Or, you could outsource part of that functionality to well established establishments such as Google, Facebook, Github and other. In addition to knowing the ... [Read more...]

In the last few years, a number of options of how to combine grid graphics (incl. ggplot2) have emerged. If you can't remember all functions to do this, this post may serve as a reference guide, but it's mostly for me because I keep forgetting the functionalities provided by cowplot ... [Read more...]

In the last few years, a number of options of how to combine grid graphics (incl. ggplot2) have emerged. If you can't remember all functions to do this, this post may serve as a reference guide, but it's mostly for me because I keep forgetting the functionalities provided by cowplot ... [Read more...]

tl;dr: Point arrows at your line at defined datum points. Sometimes to really enhance your picture you need to point at some stuff. Here is a script which will plot vertical lines to show events in your datum plot. library(ggplot2) # This script will draw points to parts of (... [Read more...]

tl;dr: Point arrows at your line at defined datum points. Sometimes to really enhance your picture you need to point at some stuff. Here is a script which will plot vertical lines to show events in your datum plot. library(ggplot2) # This script will draw points to parts of (... [Read more...]