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Posted on February 6, 2023 (Updated on July 10, 2025)

Finding image overlap in Landsat images – Google Earth Engine

Hiking & Activities

How do I download Landsat data from Google Earth Engine?

Quote from video: So you go to uh data sets uh on the googlers engine platform. And uh if you click here landsat collections you have landsat 8 here.

What is a mosaic in Google Earth Engine?

Mosaicking refers to the process of spatially assembling image datasets to produce a spatially continuous image. In Earth Engine, these terms are used interchangeably, though both compositing and mosaicking are supported. For example, consider the task of compositing multiple images in the same location.

How do I stack layers in Google Earth Engine?

In addition to the above answers, the link below would also help you to find the easier stacking techniques in Google Earth engine. At first you have to select your interested bands (for example ‘B2’, ‘B3’,…. ). After computing NDVI or any other indices, you can use . addBands() to stack different layers.

What is image collection in Google Earth Engine?

An ImageCollection is a stack or sequence of images. An ImageCollection can be loaded by pasting an Earth Engine asset ID into the ImageCollection constructor. You can find ImageCollection IDs in the data catalog. For example, to load the Sentinel-2 surface reflectance collection: Code Editor (JavaScript)

How do I get Landsat data?

The USGS Global Visualization Viewer GLOVIS site at: http://glovis.usgs.gov/ has Landsat data, as well as ASTER and some MODIS satellite images. Select the appropriate image collection e.g. Landsat Archive | Landsat 4 – 5 TM and then navigate to the region you are interested in.

What is a Google Earth Super Overlay?

Super-overlays are a form of KML in which data is broken up into regions. This allows Google Earth to refresh/request only particular regions of the map when the view area changes. Super-overlays are used to efficiently publish large sets of data.
 

What is the difference between mosaic and map?

A mosaic differs from a map as it is a perspective projection of the ground, as against the orthographic projection of the map. The mosaic suffers from non-uniformity of scales, whereas the map has a uniform scale.

What is UTM in Google Earth?

UTM is the acronym for Universal Transverse Mercator, a plane coordinate grid system named for the map projection on which it is based (Transverse Mercator). The UTM system consists of 60 zones, each 6-degrees of longitude in width.

How do I export data from Google Earth Engine?

To export an image to an asset in your Earth Engine assets folder, use Export. image.

How do I download 3D data from Google Earth?

To download premade models from the 3D Warehouse into Google Earth, follow these steps:

  1. Visit the 3D Warehouse using your Web browser.
  2. Use the Search box or otherwise find and open the model you want to download.
  3. On the model details page, click the Download button.

How do I download data from Google Earth?

Save place info to your computer

  1. Open Google Earth.
  2. Go to File Save. Save Place As.
  3. In the new window, go to the left-hand panel and select a folder.
  4. In the “File name” field, type the name of the file.
  5. Click Save.
  6. Google Earth will save the file as a . kmz file, which includes the KML file.


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