improve render speed

data/simplified_band_1.geojson

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:83cfb95ccb32b9974d5539e19c136eacdfceaf3e317b8b9df1726a4c707db2c6
-size 44034863
+oid sha256:c4c4af5e1796185fc653bb4bbe6d7e8da93a39cf355f813baa64d28964293340
+size 22017800

notebooks/simplify_polygon.ipynb → simplify_polygon.ipynb

@@ -2,98 +2,16 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 9,
    "id": "81ec2c58",
    "metadata": {},
    "outputs": [
     {
-     "data": {
-      "text/plain": [
-       "[{'type': 'Feature',\n",
-       "  'properties': {'IWI': 0.2388916015625},\n",
-       "  'geometry': {'type': 'Polygon',\n",
-       "   'coordinates': [[[9.63254496008522, 37.40584843073688],\n",
-       "     [9.63254496008522, 37.34548164364405],\n",
-       "     [9.692911747178051, 37.34548164364405],\n",
-       "     [9.692911747178051, 37.40584843073688],\n",
-       "     [9.63254496008522, 37.40584843073688]]]}},\n",
-       " {'type': 'Feature',\n",
-       "  'properties': {'IWI': 0.21142578125},\n",
-       "  'geometry': {'type': 'Polygon',\n",
-       "   'coordinates': [[[9.451444598806724, 37.34548164364405],\n",
-       "     [9.451444598806724, 37.28511485655122],\n",
-       "     [9.511811385899556, 37.28511485655122],\n",
-       "     [9.511811385899556, 37.34548164364405],\n",
-       "     [9.451444598806724, 37.34548164364405]]]}},\n",
-       " {'type': 'Feature',\n",
-       "  'properties': {'IWI': 0.191650390625},\n",
-       "  'geometry': {'type': 'Polygon',\n",
-       "   'coordinates': [[[9.511811385899556, 37.34548164364405],\n",
-       "     [9.511811385899556, 37.28511485655122],\n",
-       "     [9.572178172992388, 37.28511485655122],\n",
-       "     [9.572178172992388, 37.34548164364405],\n",
-       "     [9.511811385899556, 37.34548164364405]]]}},\n",
-       " {'type': 'Feature',\n",
-       "  'properties': {'IWI': 0.1314697265625},\n",
-       "  'geometry': {'type': 'Polygon',\n",
-       "   'coordinates': [[[9.572178172992388, 37.34548164364405],\n",
-       "     [9.572178172992388, 37.28511485655122],\n",
-       "     [9.63254496008522, 37.28511485655122],\n",
-       "     [9.63254496008522, 37.34548164364405],\n",
-       "     [9.572178172992388, 37.34548164364405]]]}},\n",
-       " {'type': 'Feature',\n",
-       "  'properties': {'IWI': 0.169921875},\n",
-       "  'geometry': {'type': 'Polygon',\n",
-       "   'coordinates': [[[9.63254496008522, 37.34548164364405],\n",
-       "     [9.63254496008522, 37.28511485655122],\n",
-       "     [9.692911747178051, 37.28511485655122],\n",
-       "     [9.692911747178051, 37.34548164364405],\n",
-       "     [9.63254496008522, 37.34548164364405]]]}},\n",
-       " {'type': 'Feature',\n",
-       "  'properties': {'IWI': 0.261962890625},\n",
-       "  'geometry': {'type': 'Polygon',\n",
-       "   'coordinates': [[[9.692911747178051, 37.34548164364405],\n",
-       "     [9.692911747178051, 37.28511485655122],\n",
-       "     [9.75327853427088, 37.28511485655122],\n",
-       "     [9.75327853427088, 37.34548164364405],\n",
-       "     [9.692911747178051, 37.34548164364405]]]}},\n",
-       " {'type': 'Feature',\n",
-       "  'properties': {'IWI': 0.355712890625},\n",
-       "  'geometry': {'type': 'Polygon',\n",
-       "   'coordinates': [[[9.75327853427088, 37.34548164364405],\n",
-       "     [9.75327853427088, 37.28511485655122],\n",
-       "     [9.813645321363712, 37.28511485655122],\n",
-       "     [9.813645321363712, 37.34548164364405],\n",
-       "     [9.75327853427088, 37.34548164364405]]]}},\n",
-       " {'type': 'Feature',\n",
-       "  'properties': {'IWI': 0.36572265625},\n",
-       "  'geometry': {'type': 'Polygon',\n",
-       "   'coordinates': [[[9.813645321363712, 37.34548164364405],\n",
-       "     [9.813645321363712, 37.28511485655122],\n",
-       "     [9.874012108456544, 37.28511485655122],\n",
-       "     [9.874012108456544, 37.34548164364405],\n",
-       "     [9.813645321363712, 37.34548164364405]]]}},\n",
-       " {'type': 'Feature',\n",
-       "  'properties': {'IWI': 0.215087890625},\n",
-       "  'geometry': {'type': 'Polygon',\n",
-       "   'coordinates': [[[9.270344237528228, 37.28511485655122],\n",
-       "     [9.270344237528228, 37.224748069458386],\n",
-       "     [9.33071102462106, 37.224748069458386],\n",
-       "     [9.33071102462106, 37.28511485655122],\n",
-       "     [9.270344237528228, 37.28511485655122]]]}},\n",
-       " {'type': 'Feature',\n",
-       "  'properties': {'IWI': 0.145263671875},\n",
-       "  'geometry': {'type': 'Polygon',\n",
-       "   'coordinates': [[[9.33071102462106, 37.28511485655122],\n",
-       "     [9.33071102462106, 37.224748069458386],\n",
-       "     [9.391077811713892, 37.224748069458386],\n",
-       "     [9.391077811713892, 37.28511485655122],\n",
-       "     [9.33071102462106, 37.28511485655122]]]}}]"
-      ]
-     },
-     "execution_count": 3,
-     "metadata": {},
-     "output_type": "execute_result"
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "65673.0\n"
+     ]
     }
    ],
    "source": [
@@ -105,18 +23,20 @@
     "    geojson_data = json.load(a)\n",
     "\n",
     "\n",
-    "geojson_data['features'][:10]"
+    "num_points = len(geojson_data['features'])/2\n",
+    "print(num_points)"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": 11,
    "id": "5720f337",
    "metadata": {},
    "outputs": [],
    "source": [
     "# Simplify a geometry\n",
     "from shapely.geometry import shape, Point\n",
+    "import random \n",
     "def simplify_geometry_to_centroid(geometry):\n",
     "    geom = shape(geometry)\n",
     "    centroid = geom.centroid  # Calculate the centroid of the polygon\n",
@@ -126,6 +46,11 @@
     "for feature in geojson_data['features']:\n",
     "    feature['geometry'] = simplify_geometry_to_centroid(feature['geometry'])\n",
     "\n",
+    "#shuffle data \n",
+    "random.shuffle(geojson_data['features'])\n",
+    "#only sample half of the data \n",
+    "geojson_data['features'] = geojson_data['features'][:int(num_points)]\n",
+    "\n",
     "with open('data/simplified_band_1.geojson', 'w') as w:\n",
     "    json.dump(geojson_data, w, indent=4)"
    ]