Posts with the "magick" tag

Community Call - Working with images in R

October 24, 2018

By:   Stefanie Butland

rOpenSci’s software engineer / postdoc Jeroen Ooms will explain what images are, under the hood, and showcase several rOpenSci packages that form a modern toolkit for working with images in R, including opencv, av, tesseract, magick and pdftools. 🕘 Thursday, November 15, 2018, 10-11AM PST; 7-8PM CET (find your timezone) ☎️ Find all details for joining the call on our Community Calls page. Everyone is welcome. No RSVP needed.

What's this bird? Classify old natural history drawings with R

August 28, 2018

By:   Maëlle Salmon

In this new post, we’re taking a break from modern birding data in our birder’s series… let’s explore gorgeous drawings from a natural history collection! Armed with rOpenSci’s packages binding powerful C++ libraries and open taxonomy data, how much information can we automatically extract from images? Maybe not much, but we’ll at least have explored image manipulation, optical character recognition (OCR), language detection, taxonomic name resolution with rOpenSci’s packages.

Where to go observe birds in Radolfzell? An answer with R and open data

August 14, 2018

By:   Maëlle Salmon  |   Mark Padgham

This post is the 1st post of a series showcasing various rOpenSci packages as if Maëlle were a birder trying to make the most of R in general and rOpenSci in particular. Although the series use cases will mostly feature birds, it’ll be the occasion to highlight rOpenSci’s packages that are more widely applicable, so read on no matter what your field is! Moreoever, each post should stand on its own.

Magick 1.6: clipping, geometries, fonts, fuzz, and a bit of history

December 5, 2017

By:   Jeroen Ooms

This week magick 1.6 appeared on CRAN. This release is a big all-round maintenance update with lots of tweaks and improvements across the package. The NEWS file gives an overview of changes in this version. In this post we highlight some changes. library(magick) stopifnot(packageVersion('magick') >= 1.6) If you are new to magick, check out the vignette for a quick introduction. Perfect Graphics Rendering I have fixed a few small rendering imperfections in the graphics device.

Using Magick with RMarkdown and Shiny

November 7, 2017

By:   Jeroen Ooms

This week magick 1.5 appeared on CRAN. The latest update adds support for using images in knitr documents and shiny apps. In this post we show how this nicely ties together a reproducible image workflow in R, from source image or plot directly into your report or application. library(magick) stopifnot(packageVersion('magick') >= 1.5) Also the magick intro vignette has been updated in this version to cover the latest features available in the package.

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