added ws202425 courses

2022_Spezielle_Themen_der_Fernerkundung/04_Imagecollection_Intro.js

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+// Assemble a collection of Sentinel-2 surface reflectance images for a given
+// region and date range.
+var s2col = ee.ImageCollection('COPERNICUS/S2_SR')
+  .filterBounds(ee.Geometry.Point(-96.9037, 48.0395))
+  .filterDate('2019-06-01', '2019-10-01');
+
+// Define visualization arguments.
+var visArgs = {bands: ['B11', 'B8', 'B3'], min: 300, max: 3500};
+
+// Define a function to convert an image to an RGB visualization image and copy
+// properties from the original image to the RGB image.
+var visFun = function(img) {
+  return img.visualize(visArgs).copyProperties(img, img.propertyNames());
+};
+
+// Map over the image collection to convert each image to an RGB visualization
+// using the previously defined visualization function.
+var s2colVis = s2col.map(visFun);
+
+print("s2col", s2colVis)
+
+
+// Print the animation to the console as a ui.Thumbnail using the above defined
+// arguments. Note that ui.Thumbnail produces an animation when the first input
+// is an ee.ImageCollection instead of an ee.Image.
+print(ui.Thumbnail(s2colVis, visFun));
+
+
+// Zeigt den Median von allen Bildern
+var s2col_comp = s2col.median()
+Map.setCenter(-96.9037, 48.0395, 10)
+Map.addLayer(s2col_comp, visArgs, "composite")