Questions tagged [landsat]

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

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14 views

Maximum Likelihood Classification gives Error 010108 in ArcMap

I'm trying to run a supervised Maximum Likelihood Classification operation on a Landsat 8 image in ArcMap. It keeps returning: Error 010108: The number of bands in the signature file is less than ...
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19 views

Implement system:time_start for NDVI trend analysis in GEE

I am developing a yearly NDVI trend analysis using Landsat data in Earth Engine over the last decades. My process is to add a NDVI band to every scene for each summer (green) month, then to reduce the ...
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26 views

Change detection using different satellite imagery

I'm struggling to acquire Landsat satellite images to carry out time series analysis for a wetland in Liberia as part of my thesis work. Originally, my plan was to acquire images for 1980, 1990, 2010, ...
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44 views

Obtaining yealy maximum NDVI values from Landsat, Earth Engine code editor vs rgee package

I am trying to obtain the Landsat yearly maximum NDVI values for a region using Earth Engine through the R package rgee (an implementation of Earth Engine Python API for R). So far, I had success in ...
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25 views

Vegetation Change Tracker and GEE: What bands are required?

I'm hoping to use the GEE implementation of the Vegetation Change Tracker (VCT) algorithm here: https://developers.google.com/earth-engine/apidocs/ee-algorithms-temporalsegmentation-vct#javascript I'm ...
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Landsat NDVI collections, are they cloud filtered?

I am wondering if the Landsat NDVI collections (e.g. https://developers.google.com/earth-engine/datasets/catalog/LANDSAT_LT04_C01_T1_8DAY_NDVI) were cloud-filtered before their creation? I know these ...
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1answer
32 views

Fulfilling removed cloud area with free cloud data in Google Earth Engine

I have completed doing cloud removal with Landsat image (in this case is Lansat 8) in the Google Earth Engine. Of course the result of this process is the cloud pixels become no data, consequently the ...
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23 views

Create Time Series Chart of NDVI (based on Landsat 5) of a National Park in Germany with Google Earth Engine

So this is my code so far: My Questions: How do I name the title and x-axis and y-axis? It isn´t working with .setOptions({title: 'NDVI Bayrischer Wald Landsat 5 1984 - 2013'}) unfortunately. How do ...
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28 views

Google Earth Engine Matrix Multiply Error?

In the below code, Tasseled Cap algorithm computed using array based computation but returns error and I don't know how can I solve this: code link: https://code.earthengine.google.com/...
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21 views

I need to export the list of IDs of the satellite images available in Google Earth Engine to work in Excel. I just need the ID

I am working with Google Earth Engine and I need to export the collection as a list, to be able to work it in Excel. What I mean is being able to export the list of the ID of the available satellite ...
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22 views

Combine slope info with Landsat for classification in Google Earth Engine

I wanted to add slope data as a band to filtered Landsat data. I used ee.Image.cat to "merge" two images. I can see added band in a merged image, but when I perform the classification (which ...
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Landsat imagery corrections

I have downloaded Landsat collection 1 Level 1 imagery (Landsat 4,5,7 and 8) from https://earthexplorer.usgs.gov/. I would like to know that do we have to apply some conversions or corrections before ...
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34 views

Distinguish between agricultural lands and other land types in the Google Earth Engine

I have classified an image into 5 different categories of soil land, build-up, jungle, water, and the lands that are green but are not jungle. Now, I want to write a code to separate and distinguish ...
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46 views

Google Earth Engine vegetation index

I am trying to make maps and histograms for Landsat EVI. My code (extract below and full thing attached) works but the results seem very strange. The histogram outputs are bimodal, despite the exact ...
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33 views

Issue while creating dataset mask for Landsat 7 ETM+ band data by using rasterio

I am trying to create dataset mask of a particular band of Landsat-7 (B2) & Landsat-8 (TIR) data and then plot the same using the following code: For Landsat-7 Band-1:- import rasterio import ...
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After export the clipped Landsat image, it's distorted

I clipped square(polygon) of NDVI and Aster GED dataset and select the scale of 100 and set CRS to native projection and Exported to drive. But when I am Opening this dataset in QGIS it's showing ...
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28 views

Explanation on band conversion from radiance to reflectance final value

I've watched few video on conversion of radiance to reflectance for landsat band, most of them recommended to use formula below to to make sure the final reflectance value lies in between 0 to 1. My ...
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Copernicus OpenSearch API rate limit

I'm looking to download Sentinel imagery using an API (only), and as part of this process I would like to identify which tiles lay in the area I am interested in by providing the relevant bounding box ...
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23 views

Percentage value when resampling GEE

I am trying to resample a landsat NDSI image to a MODIS NDSI image. When I run the code below and use the inspector to click on a few random points in the image, it provides the normalized difference ...
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33 views

Viewing Google Earth Engine source code — Landsat TOA

I am working on a project looking at satellite calibration, and would like to see how Google Earth Engine performs ee.Algorithms.Landsat.TOA(image). I know that they incorporate the metadata ...
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23 views

How do I produce a time series of the NDVI with Landsat composites with Google Earth Engine?

I am trying to obtain a yearly time series of the NDVI values for a series of locations, specifically 82 random squared polygons. As I need the best temporal resolution possible, dating back to the ...
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21 views

How to blend Landsat scenes in image mosaic?

I have Landsat scenes in the same month but different dates. All are atmospherically corrected. I want to mosaic them but the colors/tones of the final result did not blend. I do not think adjusting ...
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49 views

How to get the value of specific pixels in Google Earth Engine

I want to extract the value of some pixels. I have already select the pixels that I want to extract the value with this code: var pixel_snowcover = glacierfilled_M1.select('albedofill1').map(...
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1answer
20 views

Why do Landsat images sometimes form triangles instead of 4 sided polygons to cover areas?

I put several Landsat8 images into ArcMap 10.7. I don't get the same kind of coverage (square area) you see in the first picture from the Earth Explorer site. I instead get picture 2: corners, ...
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63 views

How to calculate the number of pixels with a specific value in a image Google Earth Engine

I am trying to count the number of pixels who are equal and greater than 0.6 in a specific band (albedofill1). I am trying to count this for every image in my collection (glacier_final). For now, I ...
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1answer
22 views

Big holes in the Landsat record?

Does anyone know why there are multi-year gaps in the Landsat record in some places? This screenshot is from earthexplorer, but I found the whole when my Earth Engine code wouldn't run because it ...
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1answer
47 views

Clipping imagery to regions of interest with Google Earth Engine before exporting

My code currently collects all Landsat imagery and then creates a mean summer NDVI for each year. I would like to clip the the summer raster to an vector polygon shapefile (such as attached). ...
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50 views

Using the pixel quality layers of the Landsat SR products to create cloud and water masks in R

I tried to use the RStoolbox package function classifyQA to generate information on quality of the layers of interest, namely - cloud, cloud shadows, and water. I am unable to understand how to mask ...
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1answer
71 views

Extract landsat pixel values over plots with measurement dates

I am trying to get landsat reflectance values corresponding to field plots spread all over Finland in Google Earth Engine. Each plot is small, hence is represented by a single point (lat, lon). It ...
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26 views

Getting clipped Landsat RGB image to render correctly in ArcMap

I downloaded Landsat 8 tiff bands 1-7 into Arcmap 10.7 and then used the Composite Band tool to create a RGB raster composite image. In order to have the Landsat image render correctly I had to ...
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74 views

How to apply a Bitmask for radiometric saturation QA in a image collection (earth engine)

I am new to earth engine and I am trying to apply a radiometric saturation mask in a image collection based on ''radsat_qa'' in earth engine data catalog for landsat reflectance tier 1. I am trying ...
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Different sizes LandSat and TIGER

I'm new to GIS/Google Earth Engine. I want to use images from the LANDSAT database for training in a CNN, but I want to filter the images from LANDSAT first by images from the TIGER database (I only ...
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65 views

The Google Earth Engine and GEET packages were used for batch calculation of surface temperature (LST), but error reporting

I hope to use the GEET package for batch calculation of surface temperature (LST), but there is an error in the calculation of TOA. How can I correct it? var image_col = ee.ImageCollection('LANDSAT/...
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36 views

Add all the bands of Landsat in Google Earth Engine? [closed]

I have only NDVI band and I want to add all the bands for unsupervised classification. My code: var dataset1=ee.ImageCollection('LANDSAT/LT05/C01/T1_32DAY_NDVI').filterDate('2000-01-01','2000-12- ...
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1answer
34 views

How to filter a merged Landsats collection by cloud coverage in Google Earth Engine?

I have a collection of all Landsat 4, 5, 7, and 8 imagery that has been modified for future processing. var mergedCollection = L457Renamed.merge(L8Renamed); A property for each image is "...
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ArcGIS Maximum Likelyhood Classification Affine Error in Output?

I am running a Maximum Likelihood classification in Landsat8 data in ArcGIS 10.8. The classified output looks OK but it is affine shifted. The projection is the same as the input data, the layer also ...
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80 views

Appending a table asset with ImageCollection pixel values for specific dates and coordinates in Earth Engine

In Earth Engine I have a table asset of coordinates and dates (properties `LAT', 'LONG', 'DATE') for which I would like to return a pixel value from my ImageCollection dswe_ic, which gives a monthly ...
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My script in pyqgis run (grass7:I.pca) runs fine but output folder empties [duplicate]

this is my PyQGIS scrpit (QGIS 3.10). this code runs fine but the output folder doesn't show results. the MyFeedBack function shows me that it runs correctly and matches the Registry that is ...
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79 views

I am running a processing PyQGIS script with grass i.pca but I am not getting results in my output folder

It runs without problem but I don't get the expected pca bands, my output folder is empty, I don't know what to test. path ='C/Users/Manuel/Documents/INPUT' output='C/Users/Manuel/Documents/OUTPUT' ...
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1answer
79 views

Earth Engine: Mapping over a feature collection of ROIs

I have a function that performs an operation over a specific ROI. Now, I want to apply the same function over a collection of ROIs by mapping the function over a feature collection. Haven't found any ...
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1answer
157 views

Export NDVI from Google Earth Engine

I generated a Lansat 5 image NDVI in a rectangle of interest in Google Earth Engine. After that, I tried to export the image to my Google Drive, but the final result does not load the usual values of ...
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93 views

Processing Sentinel-3 SLSTR data using python via snappy API

I am trying to convert Sentinel-3 SLSTR S6 radiance data to a Geotiff file; However, I am finding converting the Sentinel-3 data which is in NCDF4 format to Geotiff format correctly very difficult. I ...
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Is there a way to bulk download Landsat data through cmd prompt or Python?

I know I can download landsat data through earth explorer and they have their own Bulk Downloader here: https://lta.cr.usgs.gov/EEHelp/BulkDownloadApplication But I am wondering if there is ...
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1answer
15 views

Projects using compatible Sentinel-2 and Landsat-8 reflectance data

Right from the beginning on the Senintel-2 Satellites were constructed to harmonize with the Landsat-8 products in terms of their spatial and spectral capabilities. What I wonder is, if there are ...
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3answers
54 views

Error while uploading shapefile into Google Earth Engine

I have been trying to upload a shapefile "Phu Quoc" to Google Earth Engine and hence filtering the images based on this shp, however I've got this error: "Landsat Collection: Layer Error: Image....
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1answer
58 views

How to chessboard segment landsat pixel edges in python?

Does anyone know how to do a chessboard segmentation (in the same way that ecognition does) that will select all the edges of a Landsat pixel in python/a Jupyter notebook? Given that I can use the ...
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1answer
70 views

Is qualityMosaic the same as MVC (max value composite)?

I want to make an annual Landsat 5 image for area A in Google Earth Engine using MVC. The growing season in this area is from April to August. I get data from April to October. I masked the clouds. I ...
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30 views

The emissivity of snow

I try to use the NDVI Based Emissivity Method to calculate the LSE. But the function almost applied over surfaces composed by soil and vegetation. Over surfaces like water, ice, or snow did not ...
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23 views

Import and go through a large batch of Landsat images in QGIS?

I'm trying to reconstruct a glaciers frontal evolution through time. To do so I use a whole lot (70+) of Landsat scenes which I got from USGS Earth Explorer. I would like to visualize them as false ...
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1answer
66 views

Produce NDVI on Landsat1 satellite images?

Does someone have any experience to produce NDVI on the Landsat1 satellite image? What kind of atmospherical correction (on Landsat 1) technique is necessary to perform before producing indices? Is it ...

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