All Questions
Tagged with landsat-8 google-earth-engine
166 questions
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14
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White patches on exporting band composite landsat 8 level2 image
I am using google earth engine and want to export landsat 8 (band- 2 to 7) composite but in earth engine image is clear but when i export and open image to arcgis its appear white patches there.
What ...
0
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0
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14
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Ploting a landsurface time series using Landsat8 images on Google Earth Engine
The original code was for MODIS data, but I would like to do a time series with Landsat8 Tier 2 Level 2, which already has the LST values, you just have to apply the scalling factor. I modified the ...
0
votes
0
answers
27
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Calculate land surface temperature in GEE
I want to calculate the land surface temperature, but when the equation is run, there is an error in the PV equation.
var emissivity = pv.expression('(0.985 *pv)+(0.960 *(1-pv))+ 4 * 0.01 *(pv(1-pv)))'...
0
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1
answer
28
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GEE Temporal Collection Landsat 8 C2L2T1 : Error: map(ID=0) Image.multiply: If one image has no bands, the other must also have no bands. Got 0 and 1
I am struggling with an Error of missing Bands from a temporal Landsat8_C2_L2_T1 Image Collection while retrieving the temperature over a time range.(tried it with 1 year and 10 years. same problem.)
...
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0
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1
answer
64
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Downloading .csv file with time series of Landsat 8 EVI2 from multiple points using Google Earth Engine
I am trying to download a .csv file with a time series of Landsat 8 EVI2 from multiple points using GEE according to the following code:
var roi = ee.FeatureCollection([
ee.Feature(ee.Geometry.Point([...
- 35
0
votes
1
answer
370
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Cloud Masking for Landsat 8 (LANDSAT/LC08/C02/T1_L2) in Google Earth Engine
I am trying to mask clouds in Landsat 8 surface reflectance imagery but I am getting a white output (Left image below) - the expected imagery is on the right.
Below are the lines of code.
var image = ...
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1
answer
52
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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:
...
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0
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35
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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 ...
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0
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66
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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("...
-2
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1
answer
51
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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/...
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0
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29
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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 ...
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1
vote
1
answer
116
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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 ...
- 31
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2
answers
207
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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 ...
- 31
2
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1
answer
1k
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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 ...
- 1,879
0
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1
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285
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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. ...
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1
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171
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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 ...
- 63
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0
answers
222
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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....
3
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1
answer
822
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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 ...
- 63
0
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1
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313
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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?
...
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0
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91
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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 ...
- 1
0
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0
answers
35
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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 ...
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0
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1
answer
111
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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 ...
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0
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1
answer
210
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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 ...
- 43
0
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1
answer
52
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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 ...
user226282
0
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1
answer
685
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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 ...
0
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1
answer
33
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....
0
votes
1
answer
810
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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. ...
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0
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1
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161
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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 ...
- 101
0
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1
answer
35
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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 ...
0
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2
answers
2k
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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), ...
- 131
4
votes
1
answer
415
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(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'])....
- 635
1
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2
answers
718
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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?
- 635
0
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0
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213
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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....
- 635
0
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1
answer
3k
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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?
1
vote
1
answer
185
views
"Exported bands must have compatible data types; found inconsistent types: UInt16 and Int16." how to solve?
I am new to GEE and processing satellite imagery. I am trying to download Landsat 8 Raw Imagery with the max. cloud coverage.
I get the following error when running the task:
Error: Exported bands ...
- 11
0
votes
1
answer
86
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Get rid of those masked tiles to continue with data processing
I have masked tiles in my Landsat images for my area of interest, so I merged a sentinel 2 image to fill the gaps. However, after merging and continuing with the classification, those tiles are still ...
- 103
0
votes
1
answer
62
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Google Earth Engine - problem using math functions
I am using Landsat 8 C2L2 images, and I would like to multiply Band 10 with 0.00341802 and then add 149.0 in order to get land surface temperature in Kelvin (this is explained by the second image from ...
- 133
1
vote
1
answer
781
views
Converting Landsat 8 RGB bands to 8-bit colors
I generated composite images of Landsat 8 SR images using this Google Earth Engine collection, and for a machine learning project now I need to transform the RGB bands of these images to 8-bit colors.
...
1
vote
0
answers
144
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Calculate and plot time series of tasseled cap from Landsat8 in GEE
My goal is to calculate TC for every image in the image collection and add it as another band to those images. (especially TCW and TCG). Then I would like to plot a scatter chart of the average TCW/...
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0
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0
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117
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Image exported from GEE is pixelated when open in ArcMap
I am in my final step of exporting filtered images from Google Earth Engine.
Exporting params like so // batch.Download.ImageCollection.toDrive(roilist_0_g_2016_2020_col, 'Landsat07', {scale: 30});
...
- 21
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2
answers
760
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geetools:batch not working in 2022 Google Earth Engine (GEE) (solved)
I am pretty new to GEE, but somehow find my way to get an imagecollection that I want to export. Then I find geetools:batch with this answer Link.
Objective and Problem: what I want to do is to ...
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1
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1
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125
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How to remove duplicate Images from a Landsat8 Image Collection
I am very new to Google Earth Engine and coding.
My goal is to run statistical analysis on a study & control area looking at Vegetation productivity loss across a time period.
I downloaded the ee....
1
vote
1
answer
271
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Export median yearly Landsat 8 bands and indices to Google Drive using Google Earth Engine
I am trying to export yearly median Landsat 8 bands and indices to Google Drive. I can do that for monthly images but I'd like to do that for yearly images. In the example below, I downloaded monthly ...
- 1,167
1
vote
1
answer
175
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Weird artifact on Landsat 8 image downloaded from Google Earth Engine
I am trying to download images from google earth engine for the Netherlands from 2013 through 2021. For the years 2013, 2017, and 2019, the images I'm getting have a weird white artifact on them, as ...
- 15
0
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1
answer
130
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LANDSAT 7 Surface Reflectance Missing Data For Large Swaths of Area
I am attempting to calculate the Green Chlorophyll Index across districts in Mali during the growing season(5/1-10/1) for the years2010 to 2019. I use Landsat 8 Surface Reflectance data for 2013-2019(...
- 93
0
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1
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469
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How to blur Landsat 8 image using a gaussian smooth filter with specified sigma value before downloading using Google Earth Engine?
I would like to add gaussian blur with sigma = 'some value' to Landsat 8 images before I download them using Google Earth Engine (GEE). So far I managed to simple download the images without adding ...
- 1,167
1
vote
0
answers
1k
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Earth Engine: Landsat 8 QA_PIXEL issues with cloud, shadow, and land masking
Using the QA_PIXEL band in Landsat 8 to mask out clouds, cloud shadow, and land often masks out large areas of water. The QA_PIXEL band identifies these water areas as land and cloud shadow, when this ...
- 151
1
vote
0
answers
482
views
Landsat 8 Collection 2 cloud-free mosaics in Earth Engine
I am trying to get cloud-free mosaics from 6-months periods of Landsat 8 Collection 2 Surface Reflectance.
So far I've used geetools. My code consists of multiple modules so I can't paste it all here, ...
- 746
0
votes
0
answers
333
views
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 ...
0
votes
1
answer
961
views
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 ...
