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Andras Schmelczer 2026-03-15 21:22:28 +00:00
parent 479ef92236
commit c38d654ac7
44 changed files with 2526 additions and 701 deletions
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22
analyses/bank_postcode_boundaries.ipynb
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@ -813,8 +813,14 @@
],
"source": [
"# Build area lookup from both sets\n",
"areas_before = {f[\"properties\"][\"postcode\"]: f[\"properties\"][\"area_sqm\"] for f in no_green[\"features\"]}\n",
"areas_after = {f[\"properties\"][\"postcode\"]: f[\"properties\"][\"area_sqm\"] for f in with_green[\"features\"]}\n",
"areas_before = {\n",
" f[\"properties\"][\"postcode\"]: f[\"properties\"][\"area_sqm\"]\n",
" for f in no_green[\"features\"]\n",
"}\n",
"areas_after = {\n",
" f[\"properties\"][\"postcode\"]: f[\"properties\"][\"area_sqm\"]\n",
" for f in with_green[\"features\"]\n",
"}\n",
"\n",
"# Compute percentage removed\n",
"diffs = []\n",
@ -1161,16 +1167,23 @@
"\n",
"colormap = cm.LinearColormap(\n",
" colors=[\"#ffffcc\", \"#fd8d3c\", \"#e31a1c\", \"#800026\"],\n",
" vmin=0, vmax=min(max_pct, 90),\n",
" vmin=0,\n",
" vmax=min(max_pct, 90),\n",
" caption=\"% area removed by greenspace\",\n",
")\n",
"\n",
"\n",
"# Show original boundaries, colored by how much was removed\n",
"def style_by_removal(feature):\n",
" pc = feature[\"properties\"][\"postcode\"]\n",
" pct = diff_lookup.get(pc, 0)\n",
" if pct <= 1:\n",
" return {\"fillColor\": \"#cccccc\", \"color\": \"#999\", \"weight\": 0.5, \"fillOpacity\": 0.15}\n",
" return {\n",
" \"fillColor\": \"#cccccc\",\n",
" \"color\": \"#999\",\n",
" \"weight\": 0.5,\n",
" \"fillOpacity\": 0.15,\n",
" }\n",
" return {\n",
" \"fillColor\": colormap(min(pct, 90)),\n",
" \"color\": \"white\",\n",
@ -1178,6 +1191,7 @@
" \"fillOpacity\": 0.6,\n",
" }\n",
"\n",
"\n",
"folium.GeoJson(\n",
" no_green,\n",
" name=\"Greenspace removal %\",\n",