diff --git a/package-lock.json b/package-lock.json
index c072191..bbfc8bd 100644
--- a/package-lock.json
+++ b/package-lock.json
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+      "version": "0.9.3",
+      "resolved": "https://registry.npmjs.org/es-module-lexer/-/es-module-lexer-0.9.3.tgz",
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       "dev": true
     },
     "es-to-primitive": {
@@ -23686,18 +23918,148 @@
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-      "version": "0.12.29",
-      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.12.29.tgz",
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+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.13.4.tgz",
+      "integrity": "sha512-wMA5eUwpavTBiNl+It6j8OQuKVh69l6z4DKDLzoTIqC+gChnPpcmqdA8WNHptUHRnfyML+mKEQPlW7Mybj8gHg==",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "esbuild-android-arm64": "0.13.4",
+        "esbuild-darwin-64": "0.13.4",
+        "esbuild-darwin-arm64": "0.13.4",
+        "esbuild-freebsd-64": "0.13.4",
+        "esbuild-freebsd-arm64": "0.13.4",
+        "esbuild-linux-32": "0.13.4",
+        "esbuild-linux-64": "0.13.4",
+        "esbuild-linux-arm": "0.13.4",
+        "esbuild-linux-arm64": "0.13.4",
+        "esbuild-linux-mips64le": "0.13.4",
+        "esbuild-linux-ppc64le": "0.13.4",
+        "esbuild-openbsd-64": "0.13.4",
+        "esbuild-sunos-64": "0.13.4",
+        "esbuild-windows-32": "0.13.4",
+        "esbuild-windows-64": "0.13.4",
+        "esbuild-windows-arm64": "0.13.4"
+      }
+    },
+    "esbuild-android-arm64": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-android-arm64/-/esbuild-android-arm64-0.13.4.tgz",
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+      "optional": true
+    },
+    "esbuild-darwin-64": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-darwin-64/-/esbuild-darwin-64-0.13.4.tgz",
+      "integrity": "sha512-zJQGyHRAdZUXlRzbN7W+7ykmEiGC+bq3Gc4GxKYjjWTgDRSEly98ym+vRNkDjXwXYD3gGzSwvH35+MiHAtWvLA==",
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+      "resolved": "https://registry.npmjs.org/esbuild-darwin-arm64/-/esbuild-darwin-arm64-0.13.4.tgz",
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+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-freebsd-64/-/esbuild-freebsd-64-0.13.4.tgz",
+      "integrity": "sha512-u9DRGkn09EN8+lCh6z7FKle7awi17PJRBuAKdRNgSo5ZrH/3m+mYaJK2PR2URHMpAfXiwJX341z231tSdVe3Yw==",
+      "dev": true,
+      "optional": true
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+    "esbuild-freebsd-arm64": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-freebsd-arm64/-/esbuild-freebsd-arm64-0.13.4.tgz",
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+      "dev": true,
+      "optional": true
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+    "esbuild-linux-32": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-linux-32/-/esbuild-linux-32-0.13.4.tgz",
+      "integrity": "sha512-UUYJPHSiKAO8KoN3Ls/iZtgDLZvK5HarES96aolDPWZnq9FLx4dIHM/x2z4Rxv9IYqQ/DxlPoE2Co1UPBIYYeA==",
+      "dev": true,
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+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-linux-64/-/esbuild-linux-64-0.13.4.tgz",
+      "integrity": "sha512-+RnohAKiiUW4UHLGRkNR1AnENW1gCuDWuygEtd4jxTNPIoeC7lbXGor7rtgjj9AdUzFgOEvAXyNNX01kJ8NueQ==",
+      "dev": true,
+      "optional": true
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+    "esbuild-linux-arm": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-linux-arm/-/esbuild-linux-arm-0.13.4.tgz",
+      "integrity": "sha512-BH5gKve4jglS7UPSsfwHSX79I5agC/lm4eKoRUEyo8lwQs89frQSRp2Xup+6SFQnxt3md5EsKcd2Dbkqeb3gPA==",
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+      "optional": true
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+    "esbuild-linux-mips64le": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-linux-mips64le/-/esbuild-linux-mips64le-0.13.4.tgz",
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+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-linux-ppc64le/-/esbuild-linux-ppc64le-0.13.4.tgz",
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+      "dev": true,
+      "optional": true
+    },
+    "esbuild-openbsd-64": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-openbsd-64/-/esbuild-openbsd-64-0.13.4.tgz",
+      "integrity": "sha512-xEkI1o5HYxDzbv9jSox0EsDxpwraG09SRiKKv0W8pH6O3bt+zPSlnoK7+I7Q69tkvONkpIq5n2o+c55uq0X7cw==",
+      "dev": true,
+      "optional": true
+    },
+    "esbuild-sunos-64": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-sunos-64/-/esbuild-sunos-64-0.13.4.tgz",
+      "integrity": "sha512-bjXUMcODMnB6hQicLBBmmnBl7OMDyVpFahKvHGXJfDChIi5udiIRKCmFUFIRn+AUAKVlfrofRKdyPC7kBsbvGQ==",
       "dev": true,
       "optional": true
     },
     "esbuild-wasm": {
-      "version": "0.12.29",
-      "resolved": "https://registry.npmjs.org/esbuild-wasm/-/esbuild-wasm-0.12.29.tgz",
-      "integrity": "sha512-amSuB/qOGnTFYLOxGHDGosQbOKZnrinniPHFf6ZxzeNH7WAjLkjXluKyKAtX2YuhTkUXm9XV9igl13iqYZ44fQ==",
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-wasm/-/esbuild-wasm-0.13.4.tgz",
+      "integrity": "sha512-2dN7njr9/2QzKLqbTEgXr73vDbSqffdJMv4EfaMQoy04cej0owbGHH5apPgED0wN9I5e7sBT0/Q81tVy3wQBlA==",
       "dev": true
     },
+    "esbuild-windows-32": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-windows-32/-/esbuild-windows-32-0.13.4.tgz",
+      "integrity": "sha512-z4CH07pfyVY0XF98TCsGmLxKCl0kyvshKDbdpTekW9f2d+dJqn5mmoUyWhpSVJ0SfYWJg86FoD9nMbbaMVyGdg==",
+      "dev": true,
+      "optional": true
+    },
+    "esbuild-windows-64": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-windows-64/-/esbuild-windows-64-0.13.4.tgz",
+      "integrity": "sha512-uVL11vORRPjocGLYam67rwFLd0LvkrHEs+JG+1oJN4UD9MQmNGZPa4gBHo6hDpF+kqRJ9kXgQSeDqUyRy0tj/Q==",
+      "dev": true,
+      "optional": true
+    },
+    "esbuild-windows-arm64": {
+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/esbuild-windows-arm64/-/esbuild-windows-arm64-0.13.4.tgz",
+      "integrity": "sha512-vA6GLvptgftRcDcWngD5cMlL4f4LbL8JjU2UMT9yJ0MT5ra6hdZNFWnOeOoEtY4GtJ6OjZ0i+81sTqhAB0fMkg==",
+      "dev": true,
+      "optional": true
+    },
     "escalade": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz",
@@ -25738,9 +26100,9 @@
       "dev": true
     },
     "istanbul-lib-coverage": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.0.1.tgz",
-      "integrity": "sha512-GvCYYTxaCPqwMjobtVcVKvSHtAGe48MNhGjpK8LtVF8K0ISX7hCKl85LgtuaSneWVyQmaGcW3iXVV3GaZSLpmQ==",
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.0.2.tgz",
+      "integrity": "sha512-o5+eTUYzCJ11/+JhW5/FUCdfsdoYVdQ/8I/OveE2XsjehYn5DdeSnNQAbjYaO8gQ6hvGTN6GM6ddQqpTVG5j8g==",
       "dev": true
     },
     "istanbul-lib-instrument": {
@@ -25764,9 +26126,9 @@
       }
     },
     "jest-worker": {
-      "version": "27.2.4",
-      "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-27.2.4.tgz",
-      "integrity": "sha512-Zq9A2Pw59KkVjBBKD1i3iE2e22oSjXhUKKuAK1HGX8flGwkm6NMozyEYzKd41hXc64dbd/0eWFeEEuxqXyhM+g==",
+      "version": "27.2.5",
+      "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-27.2.5.tgz",
+      "integrity": "sha512-HTjEPZtcNKZ4LnhSp02NEH4vE+5OpJ0EsOWYvGQpHgUMLngydESAAMH5Wd/asPf29+XUDQZszxpLg1BkIIA2aw==",
       "dev": true,
       "requires": {
         "@types/node": "*",
@@ -26444,9 +26806,9 @@
       "dev": true
     },
     "mini-css-extract-plugin": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/mini-css-extract-plugin/-/mini-css-extract-plugin-2.3.0.tgz",
-      "integrity": "sha512-uzWaOwC+gJrnKbr23J1ZRWx/Wd9W9Ce1mKPlsBGBV/r8zG7/G7oKMxGmxbI65pVGbae2cR7CUx9Ulk0HQt8BfQ==",
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/mini-css-extract-plugin/-/mini-css-extract-plugin-2.4.2.tgz",
+      "integrity": "sha512-ZmqShkn79D36uerdED+9qdo1ZYG8C1YsWvXu0UMJxurZnSdgz7gQKO2EGv8T55MhDqG3DYmGtizZNpM/UbTlcA==",
       "dev": true,
       "requires": {
         "schema-utils": "^3.1.0"
@@ -26668,9 +27030,9 @@
       "dev": true
     },
     "nanoid": {
-      "version": "3.1.28",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.1.28.tgz",
-      "integrity": "sha512-gSu9VZ2HtmoKYe/lmyPFES5nknFrHa+/DT9muUFWFMi6Jh9E1I7bkvlQ8xxf1Kos9pi9o8lBnIOkatMhKX/YUw==",
+      "version": "3.1.29",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.1.29.tgz",
+      "integrity": "sha512-dW2pUSGZ8ZnCFIlBIA31SV8huOGCHb6OwzVCc7A69rb/a+SgPBwfmLvK5TKQ3INPbRkcI8a/Owo0XbiTNH19wg==",
       "dev": true
     },
     "nanomatch": {
@@ -29717,9 +30079,9 @@
       }
     },
     "rxjs": {
-      "version": "7.3.1",
-      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.3.1.tgz",
-      "integrity": "sha512-vNenx7gqjPyeKpRnM6S5Ksm/oFTRijWWzYlRON04KaehZ3YjDwEmVjGUGo0TKWVjeNXOujVRlh0K1drUbcdPkw==",
+      "version": "7.4.0",
+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.4.0.tgz",
+      "integrity": "sha512-7SQDi7xeTMCJpqViXh8gL/lebcwlp3d831F05+9B44A4B0WfsEwUQHR64gsH1kvJ+Ep/J9K2+n1hVl1CsGN23w==",
       "requires": {
         "tslib": "~2.1.0"
       },
@@ -31670,9 +32032,9 @@
       }
     },
     "webpack": {
-      "version": "5.56.1",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-5.56.1.tgz",
-      "integrity": "sha512-MRbTPooHJuSAfbx7Lh/qEMRUe/d0p4cRj2GPo/fq+4JUeR/+Q1EfLvS1lexslbMcJZyPXxxz/k/NzVepkA5upA==",
+      "version": "5.58.1",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-5.58.1.tgz",
+      "integrity": "sha512-4Z/dmbTU+VmkCb2XNgW7wkE5TfEcSooclprn/UEuVeAkwHhn07OcgUsyaKHGtCY/VobjnsYBlyhKeMLiSoOqPg==",
       "dev": true,
       "requires": {
         "@types/eslint-scope": "^3.7.0",
@@ -31746,16 +32108,16 @@
       }
     },
     "webpack-cli": {
-      "version": "4.8.0",
-      "resolved": "https://registry.npmjs.org/webpack-cli/-/webpack-cli-4.8.0.tgz",
-      "integrity": "sha512-+iBSWsX16uVna5aAYN6/wjhJy1q/GKk4KjKvfg90/6hykCTSgozbfz5iRgDTSJt/LgSbYxdBX3KBHeobIs+ZEw==",
+      "version": "4.9.0",
+      "resolved": "https://registry.npmjs.org/webpack-cli/-/webpack-cli-4.9.0.tgz",
+      "integrity": "sha512-n/jZZBMzVEl4PYIBs+auy2WI0WTQ74EnJDiyD98O2JZY6IVIHJNitkYp/uTXOviIOMfgzrNvC9foKv/8o8KSZw==",
       "dev": true,
       "requires": {
         "@discoveryjs/json-ext": "^0.5.0",
-        "@webpack-cli/configtest": "^1.0.4",
-        "@webpack-cli/info": "^1.3.0",
-        "@webpack-cli/serve": "^1.5.2",
-        "colorette": "^1.2.1",
+        "@webpack-cli/configtest": "^1.1.0",
+        "@webpack-cli/info": "^1.4.0",
+        "@webpack-cli/serve": "^1.6.0",
+        "colorette": "^2.0.14",
         "commander": "^7.0.0",
         "execa": "^5.0.0",
         "fastest-levenshtein": "^1.0.12",
@@ -31766,6 +32128,12 @@
         "webpack-merge": "^5.7.3"
       },
       "dependencies": {
+        "colorette": {
+          "version": "2.0.16",
+          "resolved": "https://registry.npmjs.org/colorette/-/colorette-2.0.16.tgz",
+          "integrity": "sha512-hUewv7oMjCp+wkBv5Rm0v87eJhq4woh5rSR+42YSQJKecCqgIqNkZ6lAlQms/BwHPJA5NKMRlpxPRv0n8HQW6g==",
+          "dev": true
+        },
         "commander": {
           "version": "7.2.0",
           "resolved": "https://registry.npmjs.org/commander/-/commander-7.2.0.tgz",
diff --git a/src/app/components/platform-detail/platform-detail.component.html b/src/app/components/platform-detail/platform-detail.component.html
index 0b37438..75bc18f 100644
--- a/src/app/components/platform-detail/platform-detail.component.html
+++ b/src/app/components/platform-detail/platform-detail.component.html
@@ -1,10 +1,12 @@
 <div>
-    <h2>{{ platform.label }} Details</h2>
+
+    <h2><span [innerHTML]="platform.label"></span> Details</h2>
     <div><span>id: </span>{{platform.id}}</div>
-    <div>
-      <label for="hero-name">Platform label: </label>
+    <div><span>label: </span>{{platform.label}}</div>
+    <div>     
+      <!-- <label for="hero-name">Platform label: {{ platform.label }}</label> -->
       <!-- <input id="hero-name" [(ngModel)]="hero.name" placeholder="Hero name"/> -->
-      <!-- <input type="text" id="hero-name" [(ngModel)]="platform.label" placeholder="Platform label"/> -->
+      <!-- <input id="hero-name"  [value]="platform.label" placeholder="Platform label"/> -->
     </div>
     <button (click)="goBack()">go back</button>
   </div>
\ No newline at end of file
diff --git a/src/app/components/platform-detail/platform-detail.component.ts b/src/app/components/platform-detail/platform-detail.component.ts
index 0e759f0..8bc625c 100644
--- a/src/app/components/platform-detail/platform-detail.component.ts
+++ b/src/app/components/platform-detail/platform-detail.component.ts
@@ -14,28 +14,42 @@ import { DatasetApiService } from '../../services/dataset-api.service';
 })
 export class PlatformDetailComponent implements OnInit {
 
-  platform: GeomonPlatform;
+  public platform: GeomonPlatform | undefined;
+  public loading: boolean;
+  public error: any;
+  title: string = 'AppComponent';
 
   constructor(
     private route: ActivatedRoute,
     private datasetService: DatasetApiService,
     private location: Location
-  ) {}
+  ) {
+    this.getHero();
+  }
 
   ngOnInit(): void {
-    this.getHero();
+    // this.getHero();
   }
 
   getHero(): void {
     const id = String(this.route.snapshot.paramMap.get('id'));
     this.datasetService.getPlatform(id, 'https://geomon.geologie.ac.at/52n-sos-webapp/api/')
-		.subscribe((platform) => {
-			this.platform = platform;
+		.subscribe({
+      next: (platform: GeomonPlatform) => {
+        this.platform = platform;
+        this.title = "neuer Titel im Event";
+      },
+      error: (err: any) => this.handleError(err)
 		});   
     
    
   }
 
+  protected handleError(error: any) {
+    this.loading = false;
+    this.error = error;
+}
+
   goBack(): void {
     this.location.back();
   }
diff --git a/src/app/services/dataset.service.ts b/src/app/services/dataset.service.ts
index 3b8d1ba..e3c3795 100644
--- a/src/app/services/dataset.service.ts
+++ b/src/app/services/dataset.service.ts
@@ -58,6 +58,7 @@ export class DatasetService<T extends DatasetOptions> {
         //     options.forEach((e) => temp.push(e));
         //     // this.saveState();
         // }
+        options.visible = true;
         this.datasetOptions.set(internalId, options);
 
         this.datasetIdsChanged.emit(this.datasetIds);
diff --git a/src/app/views/diagram-view/diagram-view.component.html b/src/app/views/diagram-view/diagram-view.component.html
index e44c456..56e1b2f 100644
--- a/src/app/views/diagram-view/diagram-view.component.html
+++ b/src/app/views/diagram-view/diagram-view.component.html
@@ -3,7 +3,7 @@
     <div class="canvas-area is-8 column">
         <!-- <h2>Bar Chart</h2>
     <canvas id="line-chart" width="800" height="450"></canvas> -->
-        <geomon-timeseries-chart [datasetOptions]="datasetOptions" [datasetIds]="datasetIds"
+        <geomon-timeseries-chart [datasetOptions]="datasetOptions" [datasetArray]="datasetArray" [datasetIds]="datasetIds"
             [timeInterval]="datasetService.timespan" [selectedDatasetIds]="selectedIds"></geomon-timeseries-chart>
 
     </div>
diff --git a/src/app/views/diagram-view/diagram-view.component.ts b/src/app/views/diagram-view/diagram-view.component.ts
index 8f8e413..0a318b9 100644
--- a/src/app/views/diagram-view/diagram-view.component.ts
+++ b/src/app/views/diagram-view/diagram-view.component.ts
@@ -18,6 +18,7 @@ export class DiagramViewComponent implements OnInit {
     public selectedIds: string[] = [];
 
     public datasetOptions: Map<string, DatasetOptions> = new Map();
+     public datasetArray: Array <DatasetOptions>;
 
     public diagramLoading: boolean;
     public overviewLoading: boolean;
@@ -43,6 +44,7 @@ export class DiagramViewComponent implements OnInit {
     private setDatasets() {
         this.datasetIds = this.datasetService.datasetIds;
         this.datasetOptions = this.datasetService.datasetOptions;
+        this.datasetArray = Array.from(this.datasetOptions.values());
     }
 
     public removeAllTimeseries() {
@@ -65,8 +67,14 @@ export class DiagramViewComponent implements OnInit {
         this.selectedIds = [];
       }
 
-    public onUpdateOptions(options: DatasetOptions, internalId: string) {
-        this.datasetService.updateDatasetOptions(options, internalId);
+    public onUpdateOptions(datasetOption: DatasetOptions, internalId: string) {
+        // this.datasetService.updateDatasetOptions(datasetOption, internalId);
+
+        // let arrIndex = this.datasetArray.findIndex(x => x.internalId === internalId);
+        // this.datasetArray[arrIndex] = datasetOption;
+
+        // this.datasetOptions = new Map <string, DatasetOptions>([]);
+        // this.datasetOptions =  this.datasetService.datasetOptions;
     }
     
 
diff --git a/src/common/graphjs/geomon-timeseries-chart/geomon-timeseries-chart.component.ts b/src/common/graphjs/geomon-timeseries-chart/geomon-timeseries-chart.component.ts
index 56346b0..c3b6336 100644
--- a/src/common/graphjs/geomon-timeseries-chart/geomon-timeseries-chart.component.ts
+++ b/src/common/graphjs/geomon-timeseries-chart/geomon-timeseries-chart.component.ts
@@ -1,5 +1,5 @@
-import { 
-    Input, Component, AfterViewInit, ViewChild, ElementRef, SimpleChanges, DoCheck, IterableDiffer,  IterableDiffers
+import {
+    Input, Component, AfterViewInit, ViewChild, ElementRef, SimpleChanges, DoCheck, IterableDiffer, IterableDiffers, KeyValueDiffer, KeyValueDiffers, KeyValueChangeRecord
 } from '@angular/core';
 // import * as d3 from 'd3';
 import { Chart, ChartDataset, registerables } from 'chart.js';
@@ -21,7 +21,7 @@ import zoomPlugin from 'chartjs-plugin-zoom';
 Chart.register(zoomPlugin);
 import { InternalIdHandler, InternalDatasetId } from '../../../common/components/services/internal-id-handler.service';
 
-import { InternalDataEntry } from '../../../shared/models/chart';
+import { DataEntry, InternalDataEntry } from '../../../shared/models/chart';
 // interface Color {
 //     borderColor: string,
 //     pointBackgroundColor: string
@@ -34,7 +34,7 @@ import { InternalDataEntry } from '../../../shared/models/chart';
 })
 export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
 
-  
+
 
     // @ViewChild('geomon_timeseries', { static: true })
     // public chartElem: ElementRef;
@@ -48,6 +48,10 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
     */
     @Input()
     public datasetOptions: Map<string, DatasetOptions>;
+    protected oldDatasetOptions: Map<string, DatasetOptions>;
+
+    @Input()
+    public datasetArray: Array<DatasetOptions> = [];
 
     /**
     * List of presented dataset ids.
@@ -55,13 +59,13 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
     @Input()
     public datasetIds: string[] = [];
 
-    
+
     /**
      * List of presented selected dataset ids.
      */
-     @Input()
-     public selectedDatasetIds: string[] = [];
- 
+    @Input()
+    public selectedDatasetIds: string[] = [];
+
 
     /**
      * The time interval in which the data should presented.
@@ -90,17 +94,41 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
     private datasetIdsDiffer: IterableDiffer<string>;
     private selectedDatasetIdsDiffer: IterableDiffer<string>;
 
+    // siehe https://www.concretepage.com/angular/angular-keyvaluediffers
+    empDifferMap = new Map<string, any>();
+    empMap = new Map<string, DatasetOptions>();
+    private arrayDiffer: any;
+    changeLogs: string[] = [];
+
     constructor(
         protected iterableDiffers: IterableDiffers,
+        private kvDiffers: KeyValueDiffers,
         protected datasetIdResolver: InternalIdHandler,
         protected datasetApiService: DatasetApiService,
         protected timeService: TimeService,
         public datasetService: DatasetService<DatasetOptions>,
-    ) { 
+    ) {
         this.datasetIdsDiffer = this.iterableDiffers.find([]).create();
         this.selectedDatasetIdsDiffer = this.iterableDiffers.find([]).create();
     }
 
+    ngOnInit() {
+        // this.arrayDiffer = this.kvDiffers.find(this.datasetArray).create();
+        this.datasetArray.forEach(emp => {
+            // this.empDifferMap[emp.internalId] = this.kvDiffers.find(emp).create();
+            this.empDifferMap.set(emp.internalId, this.kvDiffers.find(emp).create());
+            // this.empMap[emp.internalId] = emp;
+            this.empMap.set(emp.internalId, emp);
+        })
+    }
+
+
+
+    private setProperty<T, K extends keyof T>(o: T, propertyName: K, value: any): void {
+        // return o[propertyName]; // o[propertyName] is of type T[K]
+        o[propertyName] = value;
+    }
+
     public ngDoCheck(): void {
 
         const selectedDatasetIdsChanges = this.selectedDatasetIdsDiffer.diff(this.selectedDatasetIds);
@@ -113,10 +141,40 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
             });
         }
 
-        if(this.datasetOptions){
-            let test = this.datasetOptions;
+        for (let [key, empDiffer] of this.empDifferMap) {
+            let empChanges = empDiffer.diff(this.empMap.get(key));
+            if (empChanges) {
+                empChanges.forEachChangedItem((record: KeyValueChangeRecord<string, any>) => {
+                    // console.log('Previous value: ' + record.previousValue);
+                    // console.log('Current value: ' + record.currentValue);
+                    // console.log('Attribute: ' + record.key);
+                    let attribute = record.key;
+                    const internalEntry = this.preparedData.find((e) => e.internalId === key);
+                    this.setProperty(internalEntry, attribute as keyof InternalDataEntry, record.currentValue);
+
+                    // internalEntry[attribute as keyof InternalDataEntry] = record.currentValue;
+                    this.processData(internalEntry, internalEntry.datasetIndex);
+                    this.lineChart.update();
+                });
+            }
         }
-    }
+
+
+        // let empArrayChanges = this.arrayDiffer.diff(this.datasetArray); 
+        // if (empArrayChanges) {
+        //     empArrayChanges.forEachAddedItem((record) => {
+        //       let emp = record.currentValue;
+        //       console.log('Added ' + emp.name);
+        //     });
+        //     empArrayChanges.forEachRemovedItem((record) => {
+        //       let emp = record.previousValue;
+        //       console.log('Removed ' + emp.name);
+        //     });
+        //   }
+
+
+
+    }  
 
     protected setSelectedId(internalId: string): void {
         const internalEntry = this.preparedData.find((e) => e.internalId === internalId);
@@ -130,7 +188,7 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
         this.redrawCompleteGraph();
     }
 
-    ngAfterViewInit(): void {        
+    ngAfterViewInit(): void {
 
         this.canvas = document.getElementById("line-chart") as HTMLCanvasElement;
 
@@ -141,9 +199,9 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
 
         for (let i = 0; i < this.datasetIds.length; i++) {
             let datasetId = this.datasetIds[i];
-            let datasetOptions = this.datasetOptions.get(datasetId);
+            let datasetOption = this.datasetOptions.get(datasetId);
             // this.internalId = this.internalIdHandler.resolveInternalId(datasetId);  
-            this.addDatasetByInternalId(datasetOptions.internalId);
+            this.addDatasetByInternalId(datasetOption.internalId);
         }
 
         // let firstDatasetId = this.datasetIds[0];
@@ -161,6 +219,14 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
         // if (changes.reloadForDatasets && this.reloadForDatasets && this.reloadDataForDatasets.length > 0) {
         //     this.reloadDataForDatasets(this.reloadForDatasets);
         // }
+
+        if (changes.datasetOptions && this.datasetOptions) {
+            // this.preparedData.forEach((dataEntry: InternalDataEntry, index) => {
+
+            //     this.processData(dataEntry, index);
+            // });
+            let test = changes.datasetOptions;
+        }
     }
 
     public getDataset(internalId: string) {
@@ -191,8 +257,19 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
         this.loadDatasetData(dataset, false);
     }
 
+    protected datasetOptionsChanged(internalId: string, options: DatasetOptions, firstChange: boolean): void {
+        if (!firstChange && this.datasetMap.has(internalId)) {
+            const internalEntry = this.preparedData.find((e) => e.internalId === internalId);
+            if (internalEntry) {
+                internalEntry.visible = options.visible;
+            }
+
+            this.processData(internalEntry, internalEntry.datasetIndex)
+        }
+    }
+
     // load data of dataset
-    private loadDatasetData(dataset: GeomonTimeseries, fprce: boolean): void {
+    private loadDatasetData(dataset: GeomonTimeseries, force: boolean): void {
         // const datasetOptions = this.datasetOptions.get(dataset.internalId);
 
         // https://github.com/52North/helgoland-toolbox/blob/9ff9a42b34cd3deb181d56d76d48eba7c101554e/libs/core/src/lib/api-communication/connectors/dataset-api-v3-connector/dataset-api-v3-connector.ts#L270
@@ -244,17 +321,17 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
             function groupBy(list: Array<[number, number]>, keyGetter: any): Map<string, TimeValueTuple[]> {
                 const map = new Map();
                 list.forEach((item: any) => {
-                     const key = keyGetter(item);
-                     const collection = map.get(key);
-                     if (!collection) {
-                         map.set(key, [item]);
-                     } else {
-                         collection.push(item);
-                     }
+                    const key = keyGetter(item);
+                    const collection = map.get(key);
+                    if (!collection) {
+                        map.set(key, [item]);
+                    } else {
+                        collection.push(item);
+                    }
                 });
                 return map;
             }
-            
+
 
             function findMinMax(values: TimeValueTuple[]) {
                 var res = { min: values[0], max: values[0] };
@@ -267,7 +344,7 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
                 return res;
             }
 
-            let values = Array.from( grouped_items.values() );
+            let values = Array.from(grouped_items.values());
             values = [].concat(...values);
             let xLabels = values.map(function (label) {
                 let date = moment(label[0]).format("DD/MM HH:mm");
@@ -323,7 +400,7 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
         datasetOptions.color = color;
 
         let dataEntry: InternalDataEntry = {
-            internalId: dataset.internalId,           
+            internalId: dataset.internalId,
             selected: this.selectedDatasetIds.indexOf(dataset.internalId) >= 0,
             // data: datasetOptions.visible ? data.values.map(d => ({ timestamp: d[0], value: d[1] })) : [],
             data: values,
@@ -342,7 +419,7 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
                 }
             },
             referenceValueData: [],
-            visible: datasetOptions.visible,
+            visible: true //datasetOptions.visible,
             // bar: barConfig
         };
 
@@ -380,7 +457,7 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
         // chart.options.scales.y.ticks.callback = (value, index, values) => { 
         //             return value + '°';
         // }
-      
+
         chart.update();
         this.width = this.calculateWidth();
     }
@@ -393,9 +470,9 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
             dataset = this.lineChart.data.datasets[datasetIndex];
             dataset.label = dataEntry.axisOptions.label;
             dataset.borderWidth = dataEntry.selected ? 4 : 1;
-            // dataset.hidden = dataEntry.selected;
+            dataset.hidden = !dataEntry.visible;
         } else {
-            dataset = {                       
+            dataset = {
                 label: dataEntry.axisOptions.label,
                 // selected: dataEntry.selected,
                 // backgroundColor: 'rgba(99, 255, 132, 0.2)',
@@ -405,31 +482,40 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
                 data: dataEntry.data,
             };
             this.lineChart.data.datasets.push(dataset);
+            dataEntry.datasetIndex = this.lineChart.data.datasets.length - 1;
         }
 
-         // You add the newly created dataset to the list of `data`
+        // You add the newly created dataset to the list of `data`
         // this.lineChart.data.datasets.push(newDataset);
         this.lineChart.options.scales.x.ticks.callback = (val, index) => {
             //     // Hide the label of every 2nd dataset
             // return xLabels.includes(val.toString()) ? val : null;
             //     return index % 2 === 0 ? (val) : '';           
             let valTime = moment(val, "DD/MM HH:mm").format("HH:mm");
-            if (valTime == "08:00" || valTime == "18:00"){
+            if (valTime == "08:00" || valTime == "18:00") {
                 return val;
             } else {
                 return null;
             }
 
         }
-        this.lineChart.options.scales.y.ticks.callback = (value, index, values) => { 
-                    return value + '°';
+        this.lineChart.options.scales.y.ticks.callback = (value, index, values) => {
+            return value + '°';
         }
     }
 
+    // public reloadDataForDatasets(datasetIds: string[]): void {
+    //     datasetIds.forEach(id => {
+    //         if (this.datasetMap.has(id)) {
+    //             this.loadDatasetData(this.datasetMap.get(id), true);
+    //         }
+    //     });
+    // }
+
     private redrawCompleteGraph(): void {
         this.preparedData.forEach((dataEntry: InternalDataEntry, index) => {
-            
-            this.processData(dataEntry, index);
+
+            this.processData(dataEntry, dataEntry.datasetIndex);
         });
         this.lineChart.update();
     }
@@ -479,18 +565,18 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
                             enabled: true
                         },
                         zoom: {
-                          wheel: {
-                            enabled: true,
-                          },
-                          pinch: {
-                            enabled: true
-                          },                          
-                          mode: 'xy',
+                            wheel: {
+                                enabled: true,
+                            },
+                            pinch: {
+                                enabled: true
+                            },
+                            mode: 'xy',
                         }
-                      },
-                      legend: {
-                          display: false
-                      }
+                    },
+                    legend: {
+                        display: false
+                    }
                 },
                 scales: {
                     y: {
@@ -514,10 +600,10 @@ export class GeomonTimeseriesChartComponent implements AfterViewInit, DoCheck {
                                 year: "yyyy",
                             }
                         },
-                        
+
                         ticks: {
-                            
-                            
+
+
                             // callback: function(val, index) {
                             //     // Hide the label of every 2nd dataset
                             //     return index % 2 === 0 ? (val) : '';
diff --git a/src/shared/models/chart.ts b/src/shared/models/chart.ts
index 33666b5..31aaa9e 100644
--- a/src/shared/models/chart.ts
+++ b/src/shared/models/chart.ts
@@ -10,6 +10,7 @@ export interface DataEntry {
 
 export interface InternalDataEntry {
     internalId: string;
+    datasetIndex?: number;
     // hoverId: string;
     data: number[];
     selected?: boolean;
diff --git a/src/shared/models/options.ts b/src/shared/models/options.ts
index 0d4897f..1dd47bc 100644
--- a/src/shared/models/options.ts
+++ b/src/shared/models/options.ts
@@ -73,6 +73,7 @@ export class DatasetOptions {
     ) {
         this.internalId = internalId;
         this.color = color;
+        this.visible = true;
     }
 }