Add survey markers layer

layers/survey-markers/get_data.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+# TODO: use https://geodesy.noaa.gov/pub/DS_ARCHIVE/BETA_PRODUCTS/ instead
+# I should have used this in the first place, but it took me a long time to find
+
+mkdir -p data
+
+mkdir -p tmp
+cd tmp
+for state in $(curl https://geodesy.noaa.gov/cgi-bin/sf_archive.prl | grep "<option" | cut -d '"' -f2); do
+    lowercase_state=$(echo $state | tr '[:upper:]' '[:lower:]')
+    curl -o $state.zip "https://geodesy.noaa.gov/cgi-bin/sf_archive.prl?StateSelected=${state}&CompressType=Zipped"
+    unzip $state.zip
+    ogr2ogr -f GeoJSON ../data/$lowercase_state.geojson $lowercase_state.shp
+    sed -i '/^"crs":/d' ../data/$lowercase_state.geojson # TODO: handle this projection properly
+done
+cd ..
+rm -r tmp
+
+# hack hack hack
+#
+# If I write this to one big file, I can't take advantage of any lazy loading
+# for performance reasons, so I'm constrained to having a bunch of files. I
+# can't programmatically import those, since es6 imports don't allow for that.
+# So, codegen it is (and fairly gross codegen at that!).
+truncate -s 0 states.js
+for file in ./data/*; do
+    basename=$(basename $file .geojson)
+    echo "import _$basename from '$file?url';" >> states.js
+done
+echo >> states.js
+echo "export default {" >> states.js
+for file in ./data/*; do
+    basename=$(basename $file .geojson)
+    echo "    $basename: _$basename," >> states.js
+done
+echo "};" >> states.js