adds new bp draft

post/2024/cover-competition-results/index.qmd

@@ -1,13 +1,61 @@
 ---
 title: "Geocomputation with R comptetition: book cover for the 2nd edition" 
-author: Robin Lovelace, Jakub Nowosad, Jannes Muenchow
-date: "2023-01-11"
+author: Benjamin Nowak
+date: "2023-01-17"
 slug: map-competition-results
 categories: 
   - posts
   - rstats
   - announcement
 tags: [rspatial, rstats, announcement]
-draft: false
+draft: true
 fig-cap-location: top
 ---
+
+::: {.callout-note}
+This is a guest blog post written by Benjamin Nowak. 
+He is the winner of the [Geocomputation with R book cover competition](/post/2023/map-cover-competition/) for the second edition of the book.
+Congratulations!
+:::
+
+# One page, many things to show
+
+Like [Marco Sciaini](https://marcosci.github.io/), the creator of [the cover of the previous edition](https://github.com/geocompx/geocompx.org/blob/main/post/2023/map-cover-competition/images/paste-3.png), I started with the idea that seemed most logical to illustrate the cover of **Geocomputation with R**: illustrate various geocomputation and mapping techniques on the front page. 
+The hexagons, reminiscent of R packages, were a good idea of Marco's, but I had to come up with something new.
+
+The cover competition arrived approximately at the same time as the release of Alberto Cairo's [**The Art of Insight**](http://www.thefunctionalart.com/2023/11/the-art-of-insight-has-arrived.html), and I must confess that the beautiful tryptic imagined by Nadieh Bremer for the cover first gave me the idea of trying out a layout with three different maps (one on top of the other).
+But it was just copying someone else.
+
+The next idea then came to me quickly, as it fits well with the way graphics and maps are added as different layers in the same `ggplot()` object: adding different small maps on one big map.
+
+# A tribute to useful ressources
+
+Another idea I had with this cover was to highlight useful resources for the R community. 
+For this purpose, I used [a Tidy Tuesday dataset on energy production by country](https://github.com/rfordatascience/tidytuesday/blob/master/data/2023/2023-06-06/readme.md) for the Dorling cartogram that covered Europe in my first proposal. 
+
+Another very important resource for me are the palette color packages, which save me so much time for my dataviz creation!
+So for this proposal I used Blake Robert Mills' [**MoMAColors**](https://github.com/BlakeRMills/MoMAColors) packages and [**scico**](https://github.com/thomasp85/scico) from Fabio Crameri and Thomas Lin Pedersen.
+
+This led me to the following proposal:
+
+![Proposal](https://raw.githubusercontent.com/BjnNowak/geocomputation/master/img/raw_image.png){width=50% fig-align="center"}
+
+# Almost there...
+
+I was delighted when this proposal was chosen by Robin, Jakub and Jannes for the cover of the second edition of **Geocomputation with R**!
+But there were still a few elements missing to illustrate the diversity of cartographic objects and methods covered in the book.
+So, after some discussion and several iterations with the authors, we added: 
+
+- a NDVI raster covering the eastern part of the map
+- a map of trades over Europe
+
+On this last point, I had already had the opportunity [to transform the FAOStat tables of coffee exports into line vectors](https://x.com/BjnNowak/status/1715229934107373970?s=20), but I have to admit that the solution provided here by Robin, with the [**od**](https://github.com/ITSLeeds/od) package, was much faster! 
+After one last try, a solution was found to keep a version of Dorling's cartogram in the background, by keeping the circles on the centroids (which leads to superimpositions but is more consistent with the departures and arrivals of the flows).
+
+Now, the image contains vector and raster data (which is the focus of the 1st part of the book), shows some visualization techniques (i.e., cartograms; 2nd part of the book), and also shows some geocomputation techniques (i.e., origin-destination lines; 3rd part of the book). 
+
+![The final version of the book cover image](https://raw.githubusercontent.com/BjnNowak/geocomputation/master/img/cover_un_boundaries.png){width=50% fig-align="center"}
+
+Overall, I enjoyed creating this cover, and even more so with the exchanges with the authors and the iterations that led to the final version of the cover.
+Many thanks to Robin, Jakub and Jannes for allowing me to make a small contribution to this great project! 
+