Fix inconsistent geocoding

Author: Aric Chokey

src/routes/projects/tegna-nexstar-map/+page.svelte

@@ -44,6 +44,8 @@
 				attribution: "© OpenStreetMap contributors",
 			},
 		).addTo(map);
+		map.createPane("overlapPane");
+		map.getPane("overlapPane").style.zIndex = "650";
 
 		// Load stations data
 		tegnaLayer = L.layerGroup();
@@ -87,7 +89,11 @@
 				.addTo(nexstarLayer);
 		}
 		for (const p of data.overlap) {
-			L.marker([p.lat, p.lng], {icon: overlapIcon})
+			L.marker([p.lat, p.lng], {
+				icon: overlapIcon,
+				pane: "overlapPane",
+				zIndexOffset: 1000,
+			})
 				.bindPopup(
 					`<strong>${p.cityState}</strong><br/><br/>` +
 						`TEGNA: ${p.tegnaCallSigns}<br/>` +
@@ -105,7 +111,7 @@
 	<p class="text-lg mt-4">
 		Following the March merger of TEGNA and Nexstar, I was curious about the
 		scope of the merger, where each company has stations and news markets
-		where the companies overlap. The data in the map represents station ownership pre-merger.
+		where the companies overlap.
 	</p>
 
 	<section class="mt-10">
@@ -146,7 +152,7 @@
 
 	<section>
 		<h2 class="text-2xl font-bold mt-12 space-y-4">Data sources</h2>
-		<p>Data comes from <a href="https://www.nexstar.tv/stations/" target="_blank">Nexstar's station map</a> and <a href="https://web.archive.org/web/20260320005639/https://www.tegna.com/brands/" target="_blank">TEGNA's now-defunct map of its brands</a>. Cities are not geocoded according to their exact location, but only to the city they are listed as being located in. Cities were geocoded with data from <a href="https://simplemaps.com/data/us-cities">Simplemaps.com</a>.</p>
+		<p>The data in the map represents station ownership pre-merger and comes from <a href="https://www.nexstar.tv/stations/" target="_blank">Nexstar's station map</a> and <a href="https://web.archive.org/web/20260320005639/https://www.tegna.com/brands/" target="_blank">TEGNA's now-defunct map of its brands</a>. Cities are not geocoded according to their exact location, but only to the city they are listed as being located in. Cities were geocoded with data from <a href="https://simplemaps.com/data/us-cities">Simplemaps.com</a>.</p>
 	</section>
 </main>
 

src/routes/projects/tegna-nexstar-map/overlap_markets.json

@@ -22,14 +22,14 @@
     },
     {
         "city_state": "Charlotte, NC",
-        "lat": 35.227209,
+        "lat": 35.2083,
         "long": -80.8303,
         "nexstar_call_signs": "WJZY, WMYT",
         "tegna_call_signs": "WCNC"
     },
     {
         "city_state": "Cleveland, OH",
-        "lat": 41.499657,
+        "lat": 41.4764,
         "long": -81.6805,
         "nexstar_call_signs": "WJW",
         "tegna_call_signs": "WKYC"
@@ -57,7 +57,7 @@
     },
     {
         "city_state": "Des Moines, IA",
-        "lat": 41.586865,
+        "lat": 41.5725,
         "long": -93.6105,
         "nexstar_call_signs": "WHO",
         "tegna_call_signs": "KCWI, WOI"
@@ -78,14 +78,14 @@
     },
     {
         "city_state": "Harrisburg, PA",
-        "lat": 40.266311,
+        "lat": 40.2752,
         "long": -76.8843,
         "nexstar_call_signs": "WHTM",
         "tegna_call_signs": "WPMT"
     },
     {
         "city_state": "Hartford, CT",
-        "lat": 41.41281,
+        "lat": 41.7661,
         "long": -72.6834,
         "nexstar_call_signs": "WCTX",
         "tegna_call_signs": "WCCT, WTIC"
@@ -99,7 +99,7 @@
     },
     {
         "city_state": "Huntsville, AL",
-        "lat": 34.729847,
+        "lat": 34.6981,
         "long": -86.6412,
         "nexstar_call_signs": "WHDF, WHNT",
         "tegna_call_signs": "WZDX"
@@ -155,7 +155,7 @@
     },
     {
         "city_state": "Norfolk, VA",
-        "lat": 36.84937,
+        "lat": 36.8945,
         "long": -76.259,
         "nexstar_call_signs": "WAVY, WVBT",
         "tegna_call_signs": "WVEC"
@@ -176,14 +176,14 @@
     },
     {
         "city_state": "Portland, OR",
-        "lat": 45.520247,
+        "lat": 45.5371,
         "long": -122.65,
         "nexstar_call_signs": "KOIN, KRCW",
         "tegna_call_signs": "KGW"
     },
     {
         "city_state": "Sacramento, CA",
-        "lat": 38.581061,
+        "lat": 38.5677,
         "long": -121.4685,
         "nexstar_call_signs": "KTXL",
         "tegna_call_signs": "KXTV"
@@ -225,14 +225,14 @@
     },
     {
         "city_state": "Waco, TX",
-        "lat": 31.54919,
+        "lat": 31.5599,
         "long": -97.1882,
         "nexstar_call_signs": "KWKT",
         "tegna_call_signs": "KCEN"
     },
     {
         "city_state": "Washington, DC",
-        "lat": 38.895037,
+        "lat": 38.9047,
         "long": -77.0163,
         "nexstar_call_signs": "WDCW, WDVM",
         "tegna_call_signs": "WUSA"

src/routes/projects/tegna-nexstar-map/tegna_stations.json

@@ -14,7 +14,7 @@
     {
         "call_signs": "KVUE",
         "city_state": "Austin, TX",
-        "lat": 30.3005,
+        "lat": 30.271129,
         "lng": -97.7522
     },
     {
@@ -116,7 +116,7 @@
     {
         "call_signs": "WFMY",
         "city_state": "Greensboro, NC",
-        "lat": 36.0956,
+        "lat": 36.072635,
         "lng": -79.8271
     },
     {
@@ -134,7 +134,7 @@
     {
         "call_signs": "KHOU, KTBU",
         "city_state": "Houston, TX",
-        "lat": 29.786,
+        "lat": 29.758938,
         "lng": -95.3885
     },
     {