update: choropleth map

app/lib/pages/widgets/cloropleth_map.dart

@@ -2,6 +2,17 @@ import 'package:app/pages/consts.dart';
 import 'package:flutter/material.dart';
 import 'package:syncfusion_flutter_maps/maps.dart';
 
+/// A class containing thickness for each subdivision of the map.
+class IceThicknessModel {
+  IceThicknessModel(this.subDivID, this.thickness);
+
+  final int subDivID;
+  final double thickness;
+}
+
+/// A stateful widget which contains a choropleth map.
+/// The map data is fetched from the server, and the map is rendered
+/// using the Syncfusion Flutter Maps library.
 class ChoroplethMap extends StatefulWidget {
   final String relation;
 
@@ -15,16 +26,28 @@ class ChoroplethMap extends StatefulWidget {
 
 class _ChoroplethMapState extends State<ChoroplethMap> {
   late MapShapeSource mapShapeSource;
+  List<IceThicknessModel> iceThicknessList = <IceThicknessModel>[];
 
   @override
   void initState() {
     super.initState();
-    setState(() {
-      mapShapeSource = const MapShapeSource.network(
-        '${serverURI}get_relation', // Request map coordinates from server
-        shapeDataField: 'coordinates',
-      );
-    });
+    iceThicknessList = <IceThicknessModel>[ // NB temp test data
+      IceThicknessModel(1, 2.5),
+      IceThicknessModel(2, 4.9),
+      IceThicknessModel(3, 8.0),
+      IceThicknessModel(4, 5.6),
+      IceThicknessModel(5, 7.3),
+      IceThicknessModel(6, 6.6),
+      IceThicknessModel(7, 6.0),
+      IceThicknessModel(8, 9.0),
+    ];
+
+    mapShapeSource = MapShapeSource.network(
+      '${serverURI}get_relation', // Request map coordinates from server
+      shapeDataField: 'subDivID',
+      dataCount: iceThicknessList.length,
+      primaryValueMapper: (int index) => iceThicknessList[index].subDivID.toString(),
+    );
   }
 
   @override
@@ -38,5 +61,12 @@ class _ChoroplethMapState extends State<ChoroplethMap> {
       ],
     );
   }
+
+  @override
+  void dispose() {
+    iceThicknessList?.clear();
+    super.dispose();
+  }
+
 }
 

app/pubspec.lock

@@ -147,6 +147,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.8.2"
+  leak_tracker:
+    dependency: transitive
+    description:
+      name: leak_tracker
+      sha256: "78eb209deea09858f5269f5a5b02be4049535f568c07b275096836f01ea323fa"
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.0.0"
+  leak_tracker_flutter_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_flutter_testing
+      sha256: b46c5e37c19120a8a01918cfaf293547f47269f7cb4b0058f21531c2465d6ef0
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.1"
+  leak_tracker_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_testing
+      sha256: a597f72a664dbd293f3bfc51f9ba69816f84dcd403cdac7066cb3f6003f3ab47
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.1"
   lints:
     dependency: transitive
     description:
@@ -167,26 +191,26 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
+      sha256: d2323aa2060500f906aa31a895b4030b6da3ebdcc5619d14ce1aada65cd161cb
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.16"
+    version: "0.12.16+1"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: "9528f2f296073ff54cb9fee677df673ace1218163c3bc7628093e7eed5203d41"
+      sha256: "0e0a020085b65b6083975e499759762399b4475f766c21668c4ecca34ea74e5a"
       url: "https://pub.dev"
     source: hosted
-    version: "0.5.0"
+    version: "0.8.0"
   meta:
     dependency: transitive
     description:
       name: meta
-      sha256: a6e590c838b18133bb482a2745ad77c5bb7715fb0451209e1a7567d416678b8e
+      sha256: d584fa6707a52763a52446f02cc621b077888fb63b93bbcb1143a7be5a0c0c04
       url: "https://pub.dev"
     source: hosted
-    version: "1.10.0"
+    version: "1.11.0"
   mgrs_dart:
     dependency: transitive
     description:
@@ -207,10 +231,10 @@ packages:
     dependency: transitive
     description:
       name: path
-      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      sha256: "087ce49c3f0dc39180befefc60fdb4acd8f8620e5682fe2476afd0b3688bb4af"
       url: "https://pub.dev"
     source: hosted
-    version: "1.8.3"
+    version: "1.9.0"
   path_drawing:
     dependency: transitive
     description:
@@ -424,14 +448,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.4"
-  web:
+  vm_service:
     dependency: transitive
     description:
-      name: web
-      sha256: afe077240a270dcfd2aafe77602b4113645af95d0ad31128cc02bce5ac5d5152
+      name: vm_service
+      sha256: b3d56ff4341b8f182b96aceb2fa20e3dcb336b9f867bc0eafc0de10f1048e957
       url: "https://pub.dev"
     source: hosted
-    version: "0.3.0"
+    version: "13.0.0"
   win32:
     dependency: transitive
     description: