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Questions tagged [landsat-8]

Use this tag when asking question related to the 8th satellite in the Landsat program.

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GEE Error : (intermediate value).rename is not a function for extraction of Temperature Condition Index

I'm trying to calculate Temperature Condition Index with LST for a year of 2020. But for the last step my code was error for function .rename. It was in line 127 for .rename('TCI') and the result is: ...
Aulia Sabita's user avatar
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8 views

How to obtain Thermal index (TI) from landsat 8 or 9 images and then overlay them over shadow Index (SI) to obtain advanced shadow index?

I was trying to figure out the forest canopy density of a region through the methodology which I have found in certain papers such as "INVESTIGATION OF FOREST CANOPY DENSITY CHANGES IN HYRCANIAN ...
Vivek Krishna's user avatar
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0 answers
18 views

How to the image date/ metadata used when using the .median filter in GEE?

I am processing LST, NDVI, NDBI, & UHI data in a 1 year period. I used the .median filter function for filtering the dates. My question is, how do I know what images to use? I've tried the ...
primamuliaa's user avatar
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66 views

Normalized Difference Turbidity Index (NDTI) wrong

I'm trying to retrieve a turbidity indicator from a Landsat 8 using NDTI : NDTI=(Red-Green)/(Red+Green). The problem is the result is not consistent with the reality. Here is a RGB visualization where ...
Aurélien Lengrand's user avatar
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1 answer
37 views

Problem downloading images via landsatxplore.api

I use landsatxplore python package to download some landsat images. I have used it to download images taken one year before and it worked. I have written some Python code to download the images via a ...
Ilias Machairas's user avatar
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0 answers
23 views

Google Earth Engine Error: "Layer error: No valid training data were found"

I make a classification of landcover for 13 years from 2010 to 2022, but in 2022 I get "Layer error: No valid training data were found" //Pemunculan SHP var shp = ee.FeatureCollection("...
Paulus Mendeita Gurning's user avatar
1 vote
1 answer
57 views

Most effective Landsat 8 band combination for differentiating between urban and barren land areas for Land Use and Land Cover classification?

I am doing Land Use Land Cover Classification in GEE using Landsat 8 Level 2, Collection 2, Tier 1 dataset. While collecting training points in the composite image, The challenge I am encountering is ...
Ahmadh Nabhan 's user avatar
-2 votes
1 answer
40 views

Land cover analysis GEE

I want to do a time series analysis analysis for land cover classification. For 2024 I am using this dataset COPERNICUS/S2_SR_HARMONIZED https://developers.google.com/earth-engine/datasets/catalog/...
Sonia Das's user avatar
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0 answers
53 views

How do I calculate albedo in QGIS from a Landsat 8 image downloaded from EarthExplorer

I'm using QGIS and I'm struggling to calculate the albedo from the images. I don't understand how to use GRASS as every time I use it, I get something that doesn't make sense. Sor far, I have ...
GISNewbie2024's user avatar
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21 views

How to download 5000 Cropped Images From GEE with Dynamic Names?

I have a CSV dataset where 5000 sat image data has been given lat, long, path, row, Date, and Landsat Name. I want to filter out images using date, path, row. Cropped out a 27*27 patch centered around ...
soma's user avatar
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1 vote
1 answer
52 views

Google Earth Engine Landsat NDVI

I'm trying to map deforestation using Landsat NDVI time-series. But unfortunately I can't find the data from 2022 - 2023, on the other side data before that year is available. Can someone explain me ...
MapperIndo's user avatar
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1 answer
109 views

Google Earth Engine Error b.call is not function

I'm trying to display landsat 8 with Google Earth Engine that are clipped with my shapefile but there's an error. Is there something wrong with my script? // Function to mask clouds using the ...
MapperIndo's user avatar
2 votes
1 answer
410 views

Understanding Landsat 8-9 Pixel Quality Assessment (QA_PIXEL) Value Interpretations

Table 6.3 here describes the Landsat 8-9 Pixel Quality Assessment (QA_PIXEL) Value Interpretations. Value 54596 contains both "clear" and "cirrus". What am I to make of it? A pixel ...
user88484's user avatar
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1 answer
110 views

Get monthly NDVI and NDWI median for a year, from Landsat collection Google Earth Engine (GEE)

I am trying to get NDVI and NDWI per month, based on the median of the images in one month. For this, I am using Landsat8 collection an year 2018. I keep getting empty bands for the var monthlyStats. ...
Valentina Bravo's user avatar
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0 answers
55 views

ee.Algorithms.TemporalSegmentation.segment is not a function from GEE LandTrendr

I am working on a GEE project on a LandTrendr model for California looking at wildfires in the LA region from 2013-2023 using Landsat 8. This class involved no GEE and yet we need to use it. This is ...
J.P. Newman's user avatar
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1 answer
30 views

Landsat 8 - eleven bands and corresponding files

Landsat 8 zipped file downloaded via EarthExplorer consists of several files. Which of the files correspond to the band 8, 9, 11? LC09_L2SP_x_y_z_02_T1_ANG.txt LC09_L2SP_x_y_z_02_T1_MTL.json ...
Vladimir Z.'s user avatar
0 votes
1 answer
114 views

Using cloud confidence to create cloud mask from Landsat 8 QA_PIXEL

I want to use the Landsat QA_PIXEl from this dataset to create a cloud mask in GEE. I only want to mask out the areas where there is high confidence that cloud cover is present. Looking at the ...
rrwork___'s user avatar
0 votes
0 answers
96 views

Timelapse in GEE

This code is working and the video is active but only images are there. I couldn't add the date (year) to the images. How can this step be accomplished? // Define your collection var collection = (ee....
user233587's user avatar
3 votes
1 answer
330 views

Mask Clouds and Cloud Shadow on Landsat 8 images using Google Earth Engine

I'm creating a composite image using Landsat 8 as I want a monthly composite of an area without clouds. I'm having trouble with masking the clouds. I'm using this dataset and I am applying the code ...
rrwork___'s user avatar
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1 answer
127 views

Calculating LST from Landsat 8 in Google Earth Engine display a blank image

Why is it that when the following GEE code is used to calculate the lst of landsat8, the data statistics are correct, between 29°C and 55°C, but the output image is blank and the file is only 14.9MB? ...
Thomas Taylor's user avatar
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0 answers
74 views

Topo correction

How can I address the problems associated with the hills shadows in GEE, as shown in the screenshot attached? It brings a lot of complication. AN IMAGE USED // Filter to 2019 Landsat 8 images over ...
orlando's user avatar
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0 answers
22 views

Different statistical analysis for Classified Image

I have created a (1) Bamboo Index map using 2 satellite images i.e. Landsat-08 and Sentinel-02. The formula I used is: BI= (NDVI-NDMI)/(NDVI+NDMI) Where; NDMI is Normalized Difference Moisture Index. ...
Pushkar's user avatar
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1 vote
1 answer
63 views

Different NDVI Values for Landcover classes for Sentinel-2 and Landsat-8

I created a classified image of my study area using random tree classifier method as shown:- Fig 1: Classified Image of Landsat-8 Fig: Classified Image of Sentinel-2 I now want to classify image ...
Pushkar's user avatar
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0 votes
0 answers
34 views

Missing Landsat 8 Surface Reflectance Data [duplicate]

I was downloading surface reflectance data from GEE from March 1st 2017 to October 31st 2017. I should be getting data every 16 days because of the nature of Landsat 8. However, there is no data in ...
MJG's user avatar
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1 answer
68 views

Missing Landsat 8 Surface Reflectance Data From August 2017

I was downloading surface reflectance data from GEE from March 1st 2017 to October 31st 2017. I should be getting data every 16 days because of the nature of Landsat 8. However, there is no data in ...
MJG's user avatar
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0 answers
29 views

Correction for Satellite Images

I have found that some Landsat images undergo image corrections like: TOA Radiance, Satellite Brightness Temperature and other corrections. What are some of the image corrections required mandatory to ...
Pushkar's user avatar
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1 vote
0 answers
96 views

Landsat from Planetary Computer unexpectedly turns up all no data in some regions

Using some code that gathers Landsat 8 collections from Microsoft Planetary Computer into Open Data Cube xarray using a stac search works fine in some regions but in others returns all nan values. ...
jeremyg19's user avatar
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1 answer
27 views

Top of Atmosphere of Landsat 8 bands

I am trying to calculate the Top of Atmoshpere using the corresponding coefficients. The raster calculator in ArcGIS however is giving me incorrect results. The formula I am using is ((0.00002 * .tif ...
Andrew Rickard's user avatar
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1 answer
110 views

Downloading EVI from Google Earth Engine

I am trying to download images from Landsat's EVI collection off of Google Earth Engine. I saw another similar post here: EVI or NDVI collection image download that talked about the same issue. One ...
Lavendarfire's user avatar
0 votes
1 answer
44 views

Visualize mean NDVI for the past 4 years Jan to Dec to distinguish cropland in GEE [closed]

My goal is to perform supervised classification in a large area using Landsat 8 images. Since the area has a lot of vegetation, it is challenging to accurately distinguish agricultural areas. To make ...
user avatar
0 votes
0 answers
32 views

Water vapor using Landsat-8

I want to compute Land Surface Temperature using Landsat-8 images, and to do so I have to calculate the water vapor first, I found out that a lot of people use the MSWCVR method which I don't quite ...
FF123456's user avatar
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0 answers
138 views

How to perform terrain correction in Google Earth Engine

How can I perform the terrain correction as the shadows from the mountains severely affect the land use classification results. The random forest model picks the shadows as the water bodies. Here is ...
orlando's user avatar
0 votes
0 answers
24 views

NDVI from Composite Band using ArcMap [duplicate]

I am using ArcMap. I created a composite band for each 5-year using band i.e.,2,3,4,5,6,7,8. I then calculated NDVI index and created NDVI map for each 5 years. I now wanted to create NDVI map of 5 ...
Pushkar's user avatar
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0 votes
0 answers
141 views

Maximum NDVI greenest pixel composites to create cloud free Landsat 8 images

I am utilizing maximum NDVI to get the greenest pixel of Landsat 8 data to create cloud free composites in the Google Earth Engine. I found this GEE tutorial which is using Landsat 8 Top of Atmosphere ...
average_julian's user avatar
1 vote
1 answer
276 views

Difference in Index Value for Sentinel-2 and Landsat-8

I am working on bamboo distribution mapping using Sentinel-2 and Landsat-8 based on Bamboo index on ArcMap. The formula used is i.e. (BI) = (NDVI-SI)/(NDVI+SI); Where NDVI equals Normalized Difference ...
Pushkar's user avatar
  • 83
0 votes
1 answer
77 views

Landsat 8 geometry of image

I'm trying to find actual geometry of the Landsat 8 image. I retrieve Landsat data from ONDA service using EODAG. Onda provides Landsat 8 images in TIF files in epsg:4326. And it looks so: Also, in ...
Nikita's user avatar
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0 votes
0 answers
126 views

Landsat 8/9 level-2 pansharpening

From the USGS website states "Landsat 8 OLI Band 8 (panchromatic band) is not processed to Top-of Atmosphere or Surface Reflectance." Obviously same is true for Landsat 9. I.e., it's not ...
user3496060's user avatar
0 votes
1 answer
439 views

Scaling satellite imagery before using it in GEE

I want to conduct an analysis on satellite imagery from the Sentinel-2 mission using Google Earth Engine, and after some research I made, I saw that the data always have to be scaled first before ...
GISGeekpro's user avatar
0 votes
1 answer
29 views

Band calculations and sorting within a specified geometry

I am working on a small geographic area (< 50 km sq.) and am trying to find the 5-10 least cloudy Landsat images for my specified area. The issue I have is that if I simply use: imageCollection....
user225452's user avatar
0 votes
1 answer
582 views

Illogical Land Surface Temperature value from Landsat 8 Level 2 Collection 2 Tier 1

We have been working on a research about urban heat using Land Surface Temperature (LST) in Google Earth Engine. We analyzed the LST pattern in 2021 by using Landsat 8 Level 2 Collection 2 Tier 1. ...
Bagas's user avatar
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0 votes
1 answer
114 views

Mask out non-bare soil pixels in Landsat8

I aim to create an Landsat8 image for bare-soil (no vegetation). To do this, I plan to derive the quantile of the bare soil index for each pixel and mask out pixels where the bare soil index has a ...
maarvd's user avatar
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1 vote
0 answers
250 views

LST calculation from Landsat 8 and 7 shows really different output

I am trying to calculate LST for my region using ArcMap 10.5, but it shows different output and resolution. The first image is Landsat 7 (2012) and the second one is Landsat 8 (2022). So, logically ...
Zon Zahidan's user avatar
0 votes
1 answer
24 views

Not able to add all Landsat8 data folders to Mosaic dataset in ArcGIS Pro

I have a set of folders from Landsat data, each folder is of a different year. When I add all these folders to add rasters to the mosaic dataset tool. The final output shows me data for only one year ...
Pratiksha Chalke's user avatar
0 votes
1 answer
30 views

NDSI handling of areas that cross over a pixel

I am using GEE to calculate the NDSI on Landsat8 using a polygon area of 500m. Since Landsat8 has a 30m pixel resolution, I wondered how the partial pixels are handled in the calculations. Are they ...
Fernando Fuentes Martins's user avatar
0 votes
1 answer
2k views

Calculating LST from Landsat 8 in Google Earth Engine not showing correct values?

I'm trying to write a code for Land Surface Temperature (LST) from Landsat 8 images in the google earth engine. I have successfully calculated the following steps, NDVI, fractional vegetation (fv), ...
Muhammad Waqas's user avatar
4 votes
1 answer
330 views

(GEE) Constant value in Chart after applying scaling factor to LANDSAT

After applying a scaling factor to my LANDSAT collection 2 level 2 data the values seem to be off. var addNDVI = function(image) { var ndvi = image.normalizedDifference(['SR_B4', 'SR_B5'])....
N_LLC's user avatar
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1 vote
2 answers
618 views

Does USGS Landsat 8 Collection 2 Tier 1 TOA Reflectance need cloud mask before NDVI computation

For computing the NDVI I want to use USGS Landsat 8 Collection 2 Tier 1 TOA Reflectance LANDSAT/LC08/C02/T1_TOA does it need cloud masking or any other form of ''cleaning'' before I can use it?
N_LLC's user avatar
  • 615
0 votes
0 answers
172 views

NDVI values of Landsat 7 and 8 differ for same location and year (GEE)

The NDVI values for the same location and same year differ between Landsat 7 and 8. Even though I would expect a small difference the difference I found is too high. var collection1 = ee....
N_LLC's user avatar
  • 615
0 votes
1 answer
2k views

No data in collection LANDSAT/LC08/C01/T1_SR for 2022 [closed]

LANDSAT/LC08/C01/T1_SR data for year 2022 is not available. what is reason and when it can be available in Google Earth Engine?
Ajay Godara's user avatar
0 votes
1 answer
386 views

Different NDVI values with and without scale/offset

Bellow there are 2 different NDVI values, before and after applying scale/offset on bands 4 and 5. Which is correct, the one with scale/offset being applied or the other? I used a Landsat 8 L2SP image,...
Chris's user avatar
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