Minimal frontend with set of tools to explore old maps of Bahrain and interface with warped/rectified maps hosted on our tile server.
Requirements: openjdk, node, npm, internet
npm installto install packages- In CIDER (emacs),
M-x cider-jack-in-cljsand select shadow and :app. Non-CIDER and emacs,npx shadow-cljs watch app.
Local dev http://localhost:1212
Simple clojurescript, shadow-cljs static site stack. Bulma for CSS, npm packages, and leaflet.js for maps. Hosted on a Linode server. Served by an nginx reverse proxy. Cloudflare nameserver for caching/DDoS protection. Tileserver-GL for our hosted maps.
Map processing steps primarily with GDAL tools.
Github Actions builds the shadow-cljs site which is a single main.js file. It then ssh's into the server, and cps the files into place.
Converts GeoTIFF to MBTiles for use on tile server. Handy for converting rectified/corrected tif maps to host on our tile server.
scripts/tif2mbtiles.sh <input-path> <output-path>
Translate and warp a map in a UTM Zone 39 map
scripts/utm-zone39-translate.sh <input-path-without-extension-type> <top-left-coordinates/bottom-right-coordinates>
e.g. ./scripts/utm-zone39-translate.sh "1969.5000.Manama & AlJufayr.1-5" "453000 2901300 456600 2898900"
Lazy blog. I write in Markdown then convert it into hiccup syntax using markdown-to-hiccup (included in deps.edn). I then copy paste this into a name space and do a bunch of cleanup. See src/app/pages/articles/.
bash => clj
Clojure 1.10.3
user=> (require '[markdown-to-hiccup.core :as m])
nil
user=> (m/file->hiccup "file-path")
[:html {} [:head {}] [:body {} [:h1 {} "...."]
We use tileserver-gl from MapTiler to host our processed tiles. To see maps locally, you need to download the mbtiles and run it locally.
tileserver-gl -c tile-config.json
Uploading 60gb and storing it somewhere costs money and github caps out at 2gb files. Those files are transferred directly to the server with scp -r ~/bigmaps/ user@hostname:bigmaps/ then symlinked ln -s ./* /mnt/maps/mapbh/public/maps/