feat: Add radar index

src/app/calculator/calculator.service.ts

@@ -16,11 +16,11 @@ import {FieldService} from './field.service';
 import {ZonesService} from './zones.service';
 import {imageWmsTLayer, imageWmsTSource} from './image-wms-t-layer';
 
-export type Index = 'EVI' | 'NDVI';
+export type Index = 'EVI' | 'NDVI' | 'RVI4S1';
 
 @Injectable({providedIn: 'root'})
 export class CalculatorService {
-  AVAILABLE_PRODUCTS = ['EVI', 'NDVI'] as const;
+  AVAILABLE_PRODUCTS = ['EVI', 'NDVI', 'RVI4S1'] as const;
   BLUR_MIN_VALUE = 0 as const;
   BLUR_MAX_VALUE = 5 as const;
   MIN_LPIS_VISIBLE_ZOOM = 15 as const;