Initial commit with cleaned history

2022 Spezielle Themen der Fernerkundung/04b_Filter.js

@@ -0,0 +1,25 @@
+// Filter and first composites
+
+// Load Landsat 5 data, filter by date and bounds.
+var collection = ee.ImageCollection('LANDSAT/LT05/C01/T1')
+  .filterDate('1987-01-01', '1989-12-31')
+  .filter(ee.Filter.calendarRange(6,8,'month'))
+  .filterBounds(ee.Geometry.Point(13.41, 52.53));
+
+// Also filter the collection by the CLOUD_COVER property.
+var filtered = collection
+  .filterMetadata('CLOUD_COVER', 'equals', 0);
+
+// Create two composites to check the effect of filtering by CLOUD_COVER.
+var unfilteredComposite = collection.mean()
+var cloudfreeComposite = filtered.mean()
+
+// Display the composites.
+Map.setCenter(13.41, 52.53, 13);
+Map.addLayer(unfilteredComposite,
+             {bands: ['B4', 'B3', 'B2'], gain: 3.5},
+             'unfiltered composite');
+Map.addLayer(cloudfreeComposite,
+             {bands: ['B4', 'B3', 'B2'], gain: 3.5},
+             'cloudless composite');
+