Questions tagged [landsat-8]
Use this tag when asking question related to the 8th satellite in the Landsat program.
396
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ArcGIS is not showing all the colors of TIFF image exported from Google Earth Engine
I am doing supervised classification in Google Earth Engine then export the output in .tiff format image.
For prediction works, I need to import those .tif images in the ArcGIS. But ArcGIS / ArcMap is ...
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Landsat ETM+ to OLI Harmonization
I want to calculate the leaf area index in time series with Landsat 5, 7 and 8 satellites in my forest area between 1989 and 2020 in the summer with Google Earth Engine. To do this, I first ...
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1
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37
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Land cover classification using Google Earth Engine, and involving SAVI and EVI indices
I'm trying to do a land cover classification using Landsat-8 OLI/TIRS. However, I want to involve indexes (SAVI, and EVI) in this classification process. I don't know how to solve this problem. Is ...
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Extraction of NDVI values against each GPS coordinates of Landsat 8 images
My goal is to calculate the NDVI value of each image from 2017 to 2022 but output values show the same value for each image. Kindly look at the code
var Date_Start = ee.Date('2017-01-01');
var ...
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1
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Combining Band Data
I recently downloaded Landsat 8 and 5 imagery from Earth Explorer, but my problem is that all of my data bands are separate and not composite. Does anyone have any advice for getting them to combine ...
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2
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37
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Apply linear stretch to Landsat 8 images in the tmap R package
I have a Landsat 8 dataset downloaded from the USGS. I import into R using the following code:
B1 <- raster("LC08_L2SP_166072_20210819_20210827_02_T1_SR_B1.TIF")
B2 <- raster("...
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ENVI5.3.1 fmask for Landsat8 collection2 L1 image
According to the tutorial https://www.l3harrisgeospatial.com/docs/CalculateCloudMaskUsingFmask.html, ENVI will automatically calibrate the multispectral and cirrus bands (if available) to top-of-...
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How to filter out daytime image of LANDSAT 8 using google earth engine?
I saw an answer here saying that we should sort by 'system:time_start' but shouldn't that refer to the date (like 2015-05-01) instead of hour of the day? I also tried something like ee.Filter....
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129
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Download Landsat imagery from Earth Explorer using python and metadata
Using metadata (.csv) from Earth Explorer, how can I download it's Landsat imagery. There are a number of options available that use python, but I am wanting to download using the metadata. I think I ...
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Negative band values for LANDSAT/LC08/C02/T1_L2 after applying scale factors
After applying scale factors to images in the LANDSAT/LC08/C02/T1_L2 collection, as prescribed in the EE data-set catalog, I expected the SR_B. bands to have values between 0 and 1. However, some ...
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Getting 404 response while fetching Landsat-8 data from AWS S3
I am trying to fetch Landsat-8 satellite data from AWS S3 and for getting details, I am using gdalinfo command:
gdalinfo /vsicurl/https://s3-us-west-2.amazonaws.com/landsat-pds/c1/L8/144/048/...
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Why is my image not showing and in my metadata it says that my band is 0?
I'm working on estimation chlorophyll-a using a Landsat 8 image on Google Earth Engine but my image is not showing, and in my metadata it says that my band is 0. I'm really really confused because I'...
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1
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462
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How to make a cloud-free composite for Landsat 8 Collection 2 surface reflectance in Earth Engine
Suppose I want to create a cloud-free composite of Landsat 8 Collection 2 surface reflectance images for summer 2021 of Washington state, USA. How can I do it?
Here is the code to build the collection ...
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124
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How to Export latitude and longitude of ROI from Google Earth Engine
I want to export the latitude and longitude values as a CSV file from GEE. I tried the below code, but this code gives me round off values of the coordinates
var sentImage = ee.ImageCollection('...
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98
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Calculate EBBI from Landsat 8 in Google Earth Engine
I am trying to calculate EBBI from Landsat 8 in Google Earth Engine (GEE) but I am getting this error: Error: Image.parseExpression: Expression parse error at character 30: '(SWIR - NIR)/ (10 * Image....
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Classify pixels using deep learning is giving wrong result for Landsat-7 data in ArcGIS
I am trying to classify two LULC maps from two data. One is for 2020 (Landsat 8), and another is for 2000 (Landsat 7). The pixel depth is 64-bit and both of the data were downloaded from Google Earth ...
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2
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243
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Exporting Image Collection - Landsat-8 Surface Temperature (Google Earth Engine)
I've been trying to export the quarterly mean surface temperature derived from Landsat-8. I stumbled upon the batch module of fitoprincipe's. However instead of exporting a single image for each ...
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289
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Calculating LST from Landsat 8 image collection in Google Earth Engine?
I wrote a code for Land Surface Temperature (LST) from Landsat 8 image collection in the google earth engine. I have calculated the following steps, NDVI, fractional vegetation (fv), emissivity (EM), ...
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Is it incorrect to calculate NDVI using DN (Digital Numbers) values instead of using the Surface Reflectance values?
I am working with images from landsat8. I need to know If I can calculate correctly NDVI using digital numbers instead Surface Reflectance values or TOA reflectance
equation
result
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72
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Are Landsat satellites exactly sun-synchronous?
Sun-synchronous satellites are known to pass over any given point of the planet's surface at the same local mean solar time (link-to-wiki). Landsat is one of these sun-synchronous satellites.
I'm ...
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NBR difference in Google Earth Engine
I want to use two NBR images(NBR1 and NBR2) for the differenced Normalized Burn Ratio (dNBR). But I can't identify the error of dNBR output.
Code snippet:
var NBR1 = landsat8_1.expression(
&...
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173
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Landsat 8 Collection 2 anomalies in TIRS1 data (from QA_PIXEL and ST_QA)
I am looking to use Landsat 8 TIRS1 data over a region in the Yukon, Canada and I am getting persistent masked pixels (from the PIXEL_QA or the ST_QA bands) along what appears to be the same Focal ...
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landsat C2L2 random forest classification
I want to apply random forest classification on landsat C2L2 data.
I found code for Landsat Top of Atmosphere (TOA) collection but i think its better to use C2L2 colection (i will be so glad if any ...
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36
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How to remove Landsat stripes
I'm currently working on a script with Landsat 5, 7 and 8 where I apply a cloud mask to each 3 satellite ImageCollections (L5, L7 & L8) and then merge all collections into one.
When I display the ...
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29
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Calculating changes in NDVI in time using Landsat 7 image and Landsat 8 image
I'm trying to understand how much urban vegetation has changed in the past 20 years in my city. The plan is to calculate NDVI for Time1 and NDVI for Time2 and subtract them.
BUT Landsat 7 images, that ...
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43
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Layer stacking of landsat bands using ArcMap
I face a problem when apply layer stacking for landsat 8 images. I downloaded the landsat 8 image with seven bands but when I performed layer stacking either by image analysis tab or band combination, ...
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Choosing method for seeking albedo from Landsat 8 [duplicate]
I am new to the field of satellite imagery.
I would like to get a high resolution albedo of the earth's surface, but I don't really know how to do it. I'm hoping to use Landsat 8 imagery, but I'm not ...
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Sentinel2 8-day composite NDVI and NDWI images in Earth Engine
Google generates and publishes derived products for Landsat-8, 8-Day Composite NDVI and NDWI image collections in the Earth Engine Catalogue.
Landsat 8 Collection 1 Tier 1 8-Day NDVI Composite
...
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If Landsat Collection 1 is being phased out, how can alternative atmospheric corrections be applied?
I'm currently using Google Earth Engine and have seen that the Collection 1 product for Landsat 8 is being phased out and also will only be available with Landsat 9 for a year after collection.
I ...
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220
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Is this the correct way to map system:index to a Collection?
I have the code below to map the system:index (time and date, I think?) to an image collection. The ImageCollection scenes are used to calculate LST in due course, and the system:index value appended ...
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Mapping system:index to ID data then exporting one/two large CSVs
I asked a similar question recently and @Noel Gorelick provided some suggestions of how to proceed.
His advice was to:
Merge your collections (I think I've done this below)
"Export the merged ...
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Image is shifted when reprojected to WGS84 in Earth Engine
The Problem:
A Landsat 8 scene undergone same process in ArcGIS and GEE. In ArcGIS, the scene is downloaded from USGS Earth Explorer (it can be downloaded from here) and reprojected to WGS84. In GEE ...
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How to calculate the NDSI of a specific region
This is my code to find NDSI. However, I can only find the NDSI of a specific point by this code. How can I find the NDSI of a region, such as a rectangle region.
// NDSI.
// The Normalized ...
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QGIS Version 3.18 Windows 10 - Layer separates in 3 different layers when calculating surface temperature
I've got this problem when calculating the land surface temperature from Landsat 8 data. I tried with different datasets but the problem is still occurring. I took some screenshots. Any idea?
This is ...
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In Earth Engine, when exporting to drive the raster is shifted
The Problem:
Two identical Landsat scenes were downloaded from two different sources. USGS Earth Explorer and Google Earth Engine. Although both of the scenes are in the exact same coordinate system (...
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99
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Combining CSV files within Earth Engine
I have a script in EE (below) which is mapping a function to calculate Land Surface Temperature in my area of interest across multiple years of Landsat 8 scenes (filtered for clear terrain using the ...
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Do I need to convert OLI bands DN values to reflectance and TIRS bands DN values to radiance?
I know that this a very trivial question. I downloaded some Landsat 8 images from the USGS website that have the following format (I deleted the processing date):
...
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Calculating and storing average metadata values concurrently to using reducer mean on a Landsat 8 imageCollection
I am trying to calculate Land Surface Temperature for two images which are each the average of an image collection of Landsat 8 scenes.
I am using the following script in EE to create these two images ...
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1
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300
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Landsat 8 Collection 2 (C2) Level 2 Science Product (L2SP)
I am exploring data sources for land surface temperatures (LST) for summer 2021. From Landsat 8 Collection 2 Surface Temperature (https://www.usgs.gov/core-science-systems/nli/landsat/landsat-...
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Extracting NDVI and EVI in Alaska (EVI is showing -2 to 2 values)
I am working on extracting NDVI and EVI across the Landsat 8 collection in Alaska. Everything seems to be going swell, except the calculated EVI values are going from -2 to 2 instead of -1 to 1. I ...
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1
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126
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'ComputedObject (Error) User memory limit exceeded' when exporting small extracts of unaltered Landsat 8 scenes to ImageCollection
I am trying to export a small area (a circle 4.2km across) of every Landsat 8 scene within two date ranges (corresponding to 'before' and 'after' the construction of a solar farm).
I have created ...
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72
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Scatter Plot using GEE
I m using a study area which has 3 feature in it, namely cloud, snow and land. I want a scatter plot between Brightness temperature of band10(BT10) and Brightness temperature of band11(BT11). I m ...
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Calculation of brightness temperature in Kelvin from Landsat 8, Band 10
I tried to use expression to obtain the brightness temperature, It is showing some error.
Can anyone help me with this error?
I have used the co-efficient for band 10 given in metadata of Landsat 8,
...
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109
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Choose bands for LST (Landsat 8) in Google Earth Engine
I want to get LST from Landsat 8. I prefer to use Google Earth Engine(GEE), and use the code that they are offer:
https://code.earthengine.google.com/?scriptPath=Examples%3ADatasets%...
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78
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Evaluating Random Forest classification accuracy in Google Earth Engine
I am trying to check the efficiency of my RandomForest classification using the code below. The validation overall accuracy should be a percentage, but I am getting a value as 1. Would anyone help me ...
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1
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29
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Resolving land use/land cover misclassification
I'm relatively new to RS, I've been using Landsat Collection 2 Tier 2 data for my land use maps in ArcGIS Desktop. The problem is that my AOT has scarce rural built up area, due to which other barren ...
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49
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How to perform Statified random sampling for supervised classification
I want to select my training points using stratified sampling. When I run the code, there is an error saying "unrecognized argument".
Can someone look at my code and help me find the issue ...
2
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1
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123
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Difference between TOA and SR in Landsat sensors
I am looking at long-term mangrove forest change (1990-2020) in Indonesia using Landsat satellites. These are the years and sensors I have chosen:
2020- Landsat 8 T1 SR // 2010- Landsat 5 TM T1 TOA // ...
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1
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74
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Dataset documentation generation script for Landsat 8 collection 2 level 2 surface reflectance in ODC git repo fails to run [closed]
On running the script in the link below to generate the dataset documentation for data downloaded from USGS Landsat 8 Collection 2 Level 2, it ends in an error.
ls_usgs_sr_l2.py script
The error :
...
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112
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"IndexError: list index out of range" for SCP plugin in QGIS
I am using QGIS 3.20 on a Mac with the SCP plugin for pre-processing Landsat 8 OLI images. While I pre-process, I check the following options:
Allow calculation of brightness temperature in Celsius.
...
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