Questions tagged [landsat]

A series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey.

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26 views

Publishing vast dataset in Google Earth Engine

I want to create a very large productivity dataset with the Landsat series data in Google Earth Engine. However, it seems that the cloud drive and the asset just has a space less than 250 GB. Do ...
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How to utilize coefficients supplied by Roy et al. (2016) to translate ETM+ surface reflectance to OLI surface reflectance in Landsat collection 2

I'm using Justin Braaten's excellent "Landsat ETM+ to OLI Harmonization" tutorial (https://code.earthengine.google.com/798ae7a268f8e2c8022433b9562785c0) to combine imagery from different ...
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How to retrieve physical surface reflectance values from Landsat Collection 2

Currently, I multiply the Landsat pixel values by 10,000 to match the scaling of USGS Landsat surface reflectance data in collection 1 (https://www.usgs.gov/faqs/how-do-i-use-a-scale-factor-landsat-...
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63 views

Extracting data in single query from multiple Google Earth Engine images

I am trying to extract a number of variables at a series of points (lat, lon, time) by intersecting multiple images and image collections with those points (e.g. Landsat images and elevation raster). ...
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139 views

Google Earth Engine data extraction from imagery

I am trying to extract Landsat values at a number of points using Google Earth Engine (Python API). My points are given to me in the NAD83 system (as a CSV dataframe). How can I extract a 3x3 grid of ...
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16 views

Rasterio.merge removing images

I am experimenting with merging landsat bands. My dataset has several B3 bands close together, from landsat 8 and 7. import rasterio from rasterio.plot import show from rasterio.merge import merge ...
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44 views

Landsat Analysis Ready Data (ARD) in Google Earth Engine

I asked Landsat 8 Surface Reflectance Values extracted from QGIS and Google Earth Engine about getting different values when extracting to points in both Google Earth Engine and QGIS, and I realized ...
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35 views

Landsat Temporal Composite overlapping paths very different pixel values Google Earth Engine

I use GEE to create temporal composites from Landsat imagery (right now using Landsat 8 Collection 2, but same issue with Collection 1 or Landsat 7) for a particular island. I noticed that parts of my ...
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73 views

How to align X and Y pixel values to a boundary using the Open Data Cube

I am trying to load the following dataset into the DEA Sandbox: import datacube dc = datacube.Datacube(app="Landsat") import sys sys.path.append("./Scripts") from dea_datahandling ...
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34 views

Loading metadata for Landsat images loaded with `dc.load` using Open Data Cube

How can I pull in metadata from Open Data Cube for multiple Landsat observations imported using dc.load?
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Temporal subsetting of Landsat collection using select months using Open Data Cube

I have a 32 year Landsat time series Open Data Cube query and I am interested in pulling out only two months per year of data (August and Feb). Is there any way extracting data per month with the dc....
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Mosaicking Landsat images on Google Earth Engine

I need to perform analysis on Landsat images on Google Earth Engine. My study area is large and needs about 6 to 10 Landsat tiles. What's the best way to mosaic the tiles together considering that the ...
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40 views

Google Earth Engine .Map not finding all images in image collection

I have an image collection of 4 images and when I map a function to this it only picks up on two images. I've created a simple version of the problem to hopefully make this more solvable. # data to ...
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66 views

Create array from EE image after reducing image collection in Google Earth Engine

I'm trying to create an array from an EE image, following the accepted answer in this post. However, instead of grabbing a specific image, I start with an EE imageCollection, then reduce it to an ...
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65 views

Removing Cloud From Landsat 7/8 using Google Earth Engine?

I am beginner in GEE and trying to apply cloud mask in my study area. I found one code and trying to apply in my area: link: https://code.earthengine.google.com/31b5b21913eefdc05563dfec72c4ee08 I am ...
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23 views

USGS Bulk Downloader no jmv couldn't found in your system

i did install java jre 10 and the bulk downloader successfully but when i run the bulk downloads application its popping up with the error message "
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31 views

Convert an imported vector FeatureCollection to raster image with correct longitudes and latitudes and a pixel scale of 30m

I have successfully imported a CSV file detailing pixel land surface temperature (LST) difference, longitude and latitude into GEE as a FeatureCollection. Please see: https://code.earthengine.google....
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23 views

Landsat collection 2 level 1

I am working on NDWI and MNDWI indices using Landsat 5,7 and 8 to identify permanent water bodies in two images by mosaicing them. When using Landsat collection 1 data I have performed atmospheric and ...
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42 views

Masking satellite data using shapefile

I am using Landsat data to determine NDVI for a specific region of interest (roi). However, the roi has buildings and other artificial objects that I wish to mask. I have followed through the example ...
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69 views

Convert an imported land surface temperature feature collection to an image

Adopting Landsat data I have managed to calculate the land surface temperature (LST), longitude and latitude for pixels in a polygon in 1984 and 2020 and export as a CSV file. I then used Python to ...
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35 views

Google Earth Engine Reducing Landsat Global Inland Waters Raster to Vector

I'm trying to create a vector outline of the water areas of the Landsat Global Inland Water raster in Earth Engine. I get the error "Line 3: water.addBands is not a function" from the ...
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24 views

Changing spatial resolution of Landsat image

Is it possible to convert different spatial resolution (pixel size) of satellite images into similar ones? What technique should I use? I'm using QGIS software.
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35 views

What is the appropriate input scale factor for EVI?

I am trying to calculate the Enhanced Vegetation Index using Landsat surface reflectance data. The formula for EVI using standard constants is: EVI = 2.5 * ((NIR – Red) / (NIR + 6 * Red – 7.5 * Blue + ...
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36 views

log naturalis syntax in GEE?

I am using Google Earth Engine (JavaScript) to calculate brightness temperature by converting at-satellite radiance of Landsat 8. In literature the formula T = K2 / (ln((K1/L)+1) -273.15 (T: ...
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25 views

GEE :Cloud/Cloud Shadow Masking for Landsat TOA Data

Due to data limitations, I need to use TOA data to extract cloud shadows instead of SR data. Is there any good way? In addition, why is the amount of SR data less than that of TOA? and this is the ...
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Issue with scaling factors for Landsat Collection 2 Level 2 data when calculating NDVI

I'm trying to calculate the NDVI for a scene, and I've downloaded Landsat 8 OLI/TIRS Collection 2 Level 2 data, which means it has already been processed to surface reflectance. The scaling factors ...
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49 views

Google Earth Engine- Creating a Landsat NDVI time series across multiple satellites?

I have this code, which I use to plot an NDVI time series for a geometry with Landsat 8. However, I would like to create a time series from 1985-2019, which requires Landsat 5 and 7. How can I ...
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26 views

Spectral Profile Chart Using Landsat 5 TOA Earth Engine

I'm attempting to create a spectral profile chart for 4 features in my feature collection that represent vegetation. I'm not really sure how to move forward, this is one of my first few times coding ...
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66 views

GEE Tile error: Expected a homogeneous image collection, but an image with an incompatible band was encountered when calculating VCI from Landsat

I'm trying to calculate the VCI (NDVI - minNDVI)/(maxNDVI-minNDVI) for a collection of landsat 5 merged with a collection of landsat 8 because I will need to do this for different periods covering ...
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Landsat 5 missing archives in Africa

I am trying to download Landsat 5 tile on USGS explorer from the Landsat Collection 1 and Landsat Collection 2 dataset in order to do temporal analysis. However, in Africa, I can only retrieve a few ...
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214 views

USGS Bulk Downloader cannot locate install4j

Trying to run the the USGS' Bulk Download Application (https://www.usgs.gov/media/images/earthexplorer-bulk-download-application-bda) and keep getting an error message that it could not find the JRE. ...
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36 views

Extracting value of Landsat Band 8 at given location in Google Earth Engine

I would like to have the value of the B8 of Landsat at a given location pt as an output but I keep on getting errors. I think I confused some values but cannot find the mistake. My code is below. // ...
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How is Band 8 (panchromatic) of Landsat connected to Surface Reflection/Albedo?

I want to work with the surface reflection/Albedo of Landsat 8 and got told to use B8 which is the panchromatic. It catches all the visible light so it makes sense to me that it is connected but I ...
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32 views

Land classification confusion matrix pixel total and toList() pixel total not matching

Using Landsat imagery and a CART classifier I have successfully carried out land classification and computed a confusion matrix for one full Landsat image, please see: https://code.earthengine.google....
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Adding layer titles to summary table using batch processing and ModelBuilder

I have 180+ Landsat Raster Layers open. Part of the layer names in the TOC include the date the image was taken. I'm trying to get weighted average NDVI for each layer in one summary table. This is ...
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What do the following eigenvalues/eigenvectors tell me regarding the bands in the following LANDSAT TM image?

I am struggling to understand the interpretation for eigenvalues for a false-color NIR LANDSAT TM image. The image is shown below. (Note: I'm using ENVI Classic, but this is a general question and not ...
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44 views

Merging two landsat images

I have several Landsat 5 Images to merge together. As far as I saw from tutorials and previous questions there are two main methods (and none seem to be working for me): 1 - raster » miscelaneous » ...
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58 views

Cannot download Landsat 8 images from RGISTools R package

I've been having a hard time trying to automate some Landsat 8 image download and processing for my project. At first, I tried to use getSpatialData package to do what I need from R, but it seems the ...
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Estimate cross-covariance of seasonality (NDVI) and precipitation data with a harmonic regression model then visualize a chart from the model

The challenge is to estimate cross-covariance of seasonality (NDVI) and 30-day precipitation with a harmonic model. I added the UCSB CHIRPS rainfall data as bands to all available Landsat 8 imagery ...
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225 views

Get DEM from Google Earth Engine

How can I get ASTER or SRTM DEM for years like 2016, 2020,... in Google Earth Engine? I can't filter date for SRTM DEM in GEE. It seems that SRTM DEM doesn't have multi-year data, it was captured only ...
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58 views

Exporting EVI image on Google Earth Engine with visual parameters between -1 and 1?

I am having an issue with exporting an EVI image with the visual parameters between -1 and 1. On Google Earth Engine (GEE), using the inspector tool, the values are between -1 and 1, but when I export ...
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157 views

Rename Landsat bands across sensors in Google Earth Engine

I'm trying to rename bands with standardized names across different Landsat sensors. When I add layers using visualization parameters for the new standardized band names, I get errors like this: "...
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135 views

Unable to download images in Semi-Automatic Classification Plugin (SCP)

I am using version 3.10, and I am trying to download images directly from the QGIS. The Semi-Automatic Classification Plugin (SCP) seems to work fine, I can find all the available images. However, ...
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62 views

Create a custom buffer in Google Earth Engine

I am working to make mosaics of Landsat 5 scenes that cover watersheds in Montana, and am currently struggling to deal with the "rough edges" on the east/west sides of scenes that get ...
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77 views

Earth Engine: Combine time-series of NDVI from Landsat 5, 7 and 8, into one image collection and export CSV values

I'm working with 79 different research sites in Oregon where I need to extract the full time-series of NDVI values for specific areas around natural springs and then compare them to a corresponding ...
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Filter scene overlap in image collection

How can I filter areas of scene overlap so that each pixel only has data from one landsat scene? My goal is to have as many images as possible while also maintaining a uniform number of images across ...
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65 views

Accuracy assessment (confusion matrix) of image classification from Landsat imagery in SAGA GIS

I have classified Landsat images in two different classes, namely pervious and impervious, in SAGA GIS, using training sample in polygon shapes. This training sample has only one column of attribute ...
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72 views

Difference between two atmospherically corrected Images

I corrected Landsat 5 image with two different methods, first atmospheric correction through calibration (means converting raw image into radiance), second atmospheric correction through QUAC ...
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43 views

Using i.albedo in QGIS

I was wondering if anyone has used the i.albedo processing tool in QGIS? I am looking to do an analysis on a composite image from Landsat 8 and don't really know where to begin. I am using version 3....
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92 views

Landsat footprint artifacts in statewide CCDC map

I have produced a map for New York State using CCDC as implemented in google earth engine. The map counts the number of disturbances for each pixel occurring between 1990 and 2019 (black = 0 ...

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