I modified two Hugo themes to be able to share R code using blogdown. hugo-future-imperfect and hugo-statnmap-theme are multilingual themes allowing for code folding, syntax highlighting, list of related articles, citation card, SEO graph or contact form. All options listed below are detailed in the …
Play with spatial tools on 3D cells images
Let’s play with mapping tools on non-maps data ! {rayshader} is nice on raster maps, but what about using it on segmentized plant cell? […] I wanted to find a good reason to play with Tyler Morgan-Wall packages for 3D visualisation of raster data: {rayshader} and {rayfocus}. Using cell …
Introduction to mapping with {sf} & Co.
At the “Rencontres R 2018” in Rennes, I proposed a brief introduction to mapping using the recent {sf} package and some other interesting packages. This blog post is an extended version of my presentation allowing me to share the code of the different maps that appeared on it. It’s still a brief …
Draw maps like paintings
On the Grrr Slack, a mutual-aid Slack on R for French speaking people, Thomas Vroylandt showed the following maps asking how this could be done using {ggplot2} : EDIT : This maps was originally presented on visionscarto.net with drawings by Agnès Stienne […] As of today (2018-04-18): …
Spatial correlation between rasters
In this blog article, I propose a way to look at the spatial repartition of correlation between two rasters. For your own reason, you may want to know the correlation between rasters, but a unique value issued from fonction cor is not enough. You would like to know if there are variations of …
Enable code folding in bookdown and blogdown
Code folding is an interesting feature in Rmarkdown documents. Find out how to realise it in bookdown documents and blogdown websites. […] I modified Hugo themes with code folding, find out the list here. […] Some time ago, I answered a question on stackoverflow to make code folding …
Spatial interpolation on Earth as a 3D sphere
Earth map is usually presented flat. Geographical coordinates usually go from -180° to +180°. Spatial interpolations using coordinates may be tricky as -180° is equal to +180°. Here I propose a way to realize spatial interpolations on Earth as a sphere and then map the outputs in 3D using rgl. The …
Migration from wordpress to Hugo with Blogdown
I used the nice hugo-icarus-theme from digitalcraftsman as a basis and moved different things. I also added a few things to have a blog along with the freelance presentation. Feel free to fork it or propose your pull requests. The hugo-statnmap-theme has the following functionnalities: […] …
Translation of rmarkdown documents using a data frame
In my post “Rmarkdown conditional chunks to create multilingual pdf and html with images”, I proposed a way to create a rmarkdown document to be printed in two different languages. If you deal with more than two languages, your document may become difficult to read. Moreover, if you work with …
SDMSelect: Cross-validation model selection and species distribution mapping
This library has originally been created for covariates selection to predict species distribution (biomass, density or presence/absence). Its final aim is thus to produce maps of predicted distributions (Look at vignette SDM_Selection). However, the core of the library is a N-times k-fold …