But why does downloadHandler now return an empty file!? DownloadHandler context When we start working with {shiny}, we often reach a point where it is necessary to offer the user the option to download a document generated by the application. This document can be a PDF report, a PNG or JPEG image, or anything else. The appropriate function for this ...

{attachment} v0.4.0 stores your parameters in a configuration file for an easier use during your package development: run att_amend_desc() from anywhere, it will re-use your last set of parameters.  This comes with some breaking changes for a better experience.   The goal of attachment is to help to deal with package dependencies during package development. It also gives useful tools ...

The new version of {golem} is available! Read the complete version of this article at https://golemverse.org/post/golem-0.4.0-release-on-cran/ What’s up with this new version? Lighter dependency tree When we release the first version of {golem} on CRAN, we made the decision that all {golem}-based app should depend on {golem}. This was a conscious decision ,and we made it because {golem} comes with a bunch of internal functions that are used ...

One aim of our open-source packages at ThinkR is to make our development workflows easier. {attachment} and {fusen} are developed maintained to help packages development and maintenance. Inception… If they help us every day, they can probably help you as well! In this blog post, I present the lastest changes of these two packages. If you want to know how ...

It is again this time in your Ubuntu user’s life where you plan to upgrade your server installation from Ubuntu 20.04 to Ubuntu 22.04 LTS. Indeed, the first point release 22.04.1 is now there, and you’d like somebody else to try it for you before loosing all your work. Let me do it for you ! We will also use ...

If you think {fusen} is not for you because you’ve been building R packages your entire life without it, it’s time to give it a try! Refer to the new tips and tricks in the dedicated vignette in case you feel you need additional functionalities: chances are I already implemented them… Go back to the previous blog post to know ...

The new version of {golem} is now available! You can download it from your favorite CRAN repository, or by running the following command: remotes::install_github( “thinkr-open/[email protected]” ) What’s up with this new version? In this release, we have been focusing on a closer integration of tests inside the application building process, notably via Server function testing with Shiny, adding tests to ...

{fusen} gets some maturity! v0.3 is a big rebranding for a more fluid experience, from beginners to advanced developers. Creating a fully documented and tested package has never been so easy and enjoyable. Experience “Rmd first” to the fullest. At first, I imagined {fusen} to help beginners start building R packages. Following the ‘Rmd first’ method, I am convinced that ...

A new version of {attachment} is available on CRAN. Get dependencies installed from GitHub, GitLab, … and add the link to the ‘Remotes’ field in the DESCRIPTION file of your package. install.packages(“attachment”) While waiting for CRAN release, you can install from GitHub: remotes::install_github(“ThinkR-open/[email protected]”) {attachment} helps you deal with dependencies during your package development. All packages used in your code needs ...

We are often asked how to perform row-wise operations in a data.frame (or a tibble) the answer is, as usual, “it depends” 🙂 Let’s look at some cases that should fit your needs. library(tidyverse) Let’s make an example dataset: base <- tibble::tibble( a = 1:10, b = 1:10, c = 21:30 ) %>% head() base ## # A tibble: 6 ...

It is with great pleasure that we can announce that the paper version of the book “Engineering Production-Grade Shiny Apps” is available. It is published in the R Series by Chapman & Hall. If you want to use shiny with rigour , and use this techno to push your applications into production, this book is for you. The ThinkR team ...

You regularly create projects on GitLab with a common skeleton, you want to retrieve the list of GitLab issues to create a report, you are looking for batch modifications of your projects? Use the GitLab API from your preferred programming language R. Communicate with GitLab API from R Here is a small example as issued from the {gitlabr} Readme on ...

With first version of {fusen} 0.2.4 now available on CRAN, you do not have any excuses not to try it in your daily workflows. install.packages(“fusen”) Add new documented and tested functionalities in an existing package If you already develop packages, {fusen} is for you. Developing a package requires to write some code and examples in multiple places: “R/”, “tests/”, “vignettes/”. ...

The new version of {golem} (0.3.1) has been available on CRAN 🎉 for about a month now. This new version includes a lot of new things, but we notably focused on working on two important new features: allowing you to extend {golem} via templates, and supporting for the latest changes in {shiny}. Extending {golem} One of the challenges when it ...

With our “PROPRE” Project Guide, get a publishing committee and a development team to collaborate on creating your automated reports using the “PROPRE” methodology. Follow our suggestions for organization, tools and R development practices, for a controlled and benevolent DevOps practice. It is possible to collaborate around git in a team composed of developers and non developers. In this guide ...

In the same way you fall learning to walk, you make mistakes learning R. The goal of this article was to regroup the most common mistakes one makes while learning R and to explain them in order for you you know how to fix them. Facing an issue, the most important advice would be : “Read the error message”. It ...