Questions tagged [landsat-7]
The 7th satellite in the Landsat program.
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Landsat 7 image appears yellow (wrong) when creating true colour composite
I create a true colour composite of a 2010 Landsat 7 image (LE07_L2SR_176109_20101107_20200910_02_T2_SR_B*) from bands 3/2/1. I've created it both as a virtual raster in QGIS and created a composite ...
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How can I differentiate between water body and snow on my Landsat images using ArcGIS?
I am trying to detect changes in water bodies over a couple of decades. but when I use NDWI to calculate water it includes snow in that range as well, I can't differentiate between these two. I even ...
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Landsat 7 NDVI errors?
I calculated NDVI using a method from a previous question I asked. I forgot that Landsat 7 has errors following 2003. I don't mind running it again but is there ways to correct for this error?
# Start ...
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Download all Landsat tiles for a specific data range onto my computer using Google Earth Engine
I want to download all the available Landsat tiles (all bands included) for a given ROI using GEE. By tiles I mean the original tiles USGS uses to organize the Landsat data. I want each individual ...
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How can I composite Landsat-7 RGB tif images to the true color image using python?
I use below codes to composite Landsat-7 Surface Reflectance band(B3, B2, B1) images to the true color image. but the result was a wrong image. How can I solve it?
import numpy as np
import matplotlib....
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Getting code to export monthly NDVI values
I am trying to export monthly NDVI values for 2007 for my asset 'M2007' which is a mangrove extent shapefile. I've been able to export following the same code, the monthly ndvi values for 2012, apart ...
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Same formula but different result in Google Earth Engine
Earlier, I asked Calculating statistical values from set of point values in Google Earth Engine regarding extraction of MNDWI values using sample points, which got resolved. But in that code, I am ...
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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 ...
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GEE Temporal Gap Filling - Fill Landsat 7 cloud masked pixels to produce one image
Really new to GEE but trying to learn during my PhD...
I am trying to fill the gaps created from cloud masking the Landsat 7 imagery I have. I have filtered by the study area (geometry), the cloud ...
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Cloud Mask for Landsat 7 Surface Reflectance Collection 2 Level 2 Tier 1
Below is a link to the code I've put together, but I am struggling with creating an updated cloud mask for Landsat collection 2 level 2 tier 1. I want to remove all cloudy pixels and mosaic all the ...
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How to get Landsat 7 Land Surface Temperature
I am working on Landsat 7 Level 2, Collection 2, Tier 1 images through the Google Earth Engine to calculate the land surface temperature in NYC. Can I use the values of band 6 as land surface ...
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Can't Find Landsat7 data
I am trying to access Landsat7 data for Antarctica, but not getting results
// Boundary of Antarctica
var ant = ee.FeatureCollection("FAO/GAUL_SIMPLIFIED_500m/2015/level0")
...
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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....
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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});
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Band Combination for NIR-R-G in Landsat 7 scene
What is the order for the band combination to show Landsat7 scene in NIR-R-G Band? The band combination I used is:-
And the result generated is:-
Is this the correct layer combination to show ...
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ArcMap Error 010586 when using Landsat Toolbox Scanline Error Tool
I installed the Landsat Toolbox in ArcMap 10.8.2 and I am getting the error 010586 when I load a Landsat 7 band file into the tool. A red X shows up in the form and will not permit me to run the tool.
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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(...
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Export an Landsat image from ImageCollection from GEE to drive
I'm trying to export an Landsat image from GEE to a Drive, but the Export function that I applied gets 14 images (13 contain NoData and 1 the image). This is my code:
function applyScaleFactors(image) ...
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Mosaicking NDVI Image Collection by PATH and ROW in Google Earth Engine
I have an image collection of Landsat 7 filtered by a date and PATH and ROW of interest, and I want to know the best way to mosaic all the images (tiles) that have same PATH and ROW into one image.
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Scan Line Error Landsat7 GEE
I have a code that works, but I want assistance on how the scan line error in GEE can be fixed. The link to the code is below:
https://code.earthengine.google.com/?scriptPath=users%2Fmpalasimbarashe%...
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L7 issue with land use classification in Earth Engine
I am trying to classify land use in earth engine with L7 imagery, however a chunk of the region of interest is being left out as seen in the image.
The code can be found here:
//Set map centre
Map....
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Landsat 7 Collection 2 Gap Filling
I am trying to apply gap filling to Landsat 7, Tier 1 Collection 2 images.
The outcome images are still perforated.
What is missing?
var roi = ee.FeatureCollection("users/vaibhavpuri/NCR");
/...
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Google Earth Engine pan sharpening of Landsat 7 image is not producing the correct true color image
I'm currently trying to produce a true color pansharpened Landsat 7 image in Google Earth Engine. I've included my code below and a subset of the resulting image. I'm simply using the rgbToHsv ...
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Layer error: Image.rename: The number of names (1) must match the number of bands (10)
I am using Landsat 7 data (ee.ImageCollection("LANDSAT/LE07/C01/T1_TOA")) for flood mapping. I am trying to write the code but I'm stuck at a line where it says "Layer error: 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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Noisy lines in all scenes for Landsat 7?
I'm seeing patterned lines in all Landsat 7 images that clearly are image artifacts. There are lines that jet in from the edges (the center looks better) Does anyone know what it is and if there are ...
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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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Error when trying to gap-fill Landsat 7 images
I am trying to gap-fill Landsat 7 images in Google Earth Engine. I was hoping to just add a function to some existing code (see below) but I end up getting an error message of:
Line 12: filtered....
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Google Earth Engine: Understanding Landsat 7 Collection 2 QA_PIXEL, bitwiseAnd() for cloud mask
I want to see how the new Landsat 7 Collection 2 (C2, 'LANDSAT/LE07/C02/T1_L2') differs from Collection 1 (C1). I have created an adequate Landsat 7 C1 composite since GEE provides a cloud mask ...
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405
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How to destripe a Landsat 7 collection instead of single images in GEE?
I am trying to calculate the NDMI index from Landsat 7 collection in GEE.
I have the following code, however a major issue is the gaps.
I had a look in this example. To my understanding, I must set ...
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Merging Landsat 4, 5, and 7 Data for Simple Composite
I'm attempting to merge Landsat 4, Landsat 5, and Landsat 7 imagery into a single image collection in Google Earth Engine, in hopes of running simpleComposite() on the entire collection.
var geo = ee....
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EVI or NDVI collection image download
Landsat 8 Collection 1 Tier 1 8-Day EVI Composite.
I continued with the starting codes given by Google Earth Engine. I tried to solve my work by adding code to the rest of these codes. However, it ...
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Problem dry fields- urban areas on supervised classification in QGIS, Landsat 7
I am trying to make a supervised classification on a Landsat 7 image using the QGIS 3.16.1 version. I am using the SCP plugin to do then classification. I am doing the classification using the RGB ...
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Projection issue
The Landsat data having a subset area when I try to open in QGIS it is locating on top of sea. See in picture
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Missing Data in Landsat 7 and 8 (NOT due to Scan line Error)
I have created numerous annual median composites of Landsat 7 and 8 data using Earth Engine Python API. For some reason, there are some parts of the subset showing as no data (Figure1), despite there ...
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No images in timelapse video using Google Earth Engine and landsat-7 image collections
I am trying to make a timelapse video of images captured by USGS Landsat 7 Collection 1 Tier 1 and Real-Time data Raw Scenes using Google Earth Engine. Somehow all the video results are just white ...
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Applying Landsat scan line correction on a time series
I am currently trying to adapt the scan line correction (SLC) for Landsat 7 on my timeseries.
My code is based on the stack exchange question how to do the SLC, but I am not managing to apply it as a ...
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Landsat7 Scan Line Correction in GEE
I am working on a time series with Landsat 7 and I have issues with the scan line correction. I already saw the question LS7 filling the gaps image with google earth engine and tried to adopt the ...
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How to print chart for NDWI
Trying to compute chart for NDWI
var dataset = ee.ImageCollection('LANDSAT/LE07/C01/T1_8DAY_NDWI')
.filterDate('1999-01-01', '2002-12-31')
.filterBounds(...
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Subtract two pixels-only- layers using rectangle extent
I have code in GEE that:
calculates the NDVI in a given polygon, from 2000 (based on Landsat 7) and 2019 (Landsat 8)
creates for each one a layer with pixels that their NDVI value is higher than 0.3
...
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Export classified Landsat 7 image - Google Earth Engine
I am trying to export images of MODIS landcover classifications and classified Landsat 7 images.
However, my codes only result in black images rather than what I see if I add the layers to the Map.
...
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Seeing heights in Landsat 8
I have downloaded some DEM from Landsat 8 from usgs website.
when I opened the compressed file I saw some Tiff files and two text files.
I opened the txt file using ArcGIS 10.7 and it contains many ...
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Merging raw data from Landsat 5, Landsat 7 and Landsat 8
This question concerns the merging of the following Google Earth Engine collections:
USGS Landsat 5 TM Collection 1 Tier 1 Raw Scenes (LANDSAT/LT05/C01/T1)
USGS Landsat 7 Collection 1 Tier 1 Raw ...
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Layer not generating correctly when running Raster Fillnodata in QGIS [closed]
Using QGIS 3.4.5 I am attempting to fill a landsat 7 band raster layer as the image contains diagonal lines because of the scan line corrector issue. I'm using the raster analysis no fill data tool ...
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Problem with QGIS GDAL Fill Nodata
I have been using the 'GDAL Fill Nodata' function in QGIS in order to rectify downloaded Landsat 7 images, having created a relevant mask. Whilst said function has been successful in resolving bands 1 ...
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Getting Landsat 7 images scanline errors in ArcGIS Desktop?
I have used "Fix Landsat 7 Scanline Errors" tool to remove the stripes from the raster. Though the black scan lines are removed but the raster gets scratches. See
screen shot below.
How can I ...
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Exporting Landsat 7 Surface Reflectance through Google Earth Engine
I'm trying to export Surface Reflectance data from Landsat 7 through Google Earth Engine. However, the dimensions don't seem to match up: previously with NVDI data, I printed the image collection size ...
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Fusing Collection 1 Landsat 7 and 8 Surface Reflectance NDVI
I'm fusing L7 & L8 surface reflectance into an NDVI time-series. I'm using the method described in Roy et al. 2016 to convert L7 NDVI to L8 NDVI using a simple regression equation found in table 3:...
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Performing supervised classification with Landsat 7 in Google Earth Engine
I am trying to perform landcover classification of Shanghai using JavaScript in Google Earth Engine. I am a complete beginner at this and I have been going through many tutorials trying to figure ...
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Integrating Landsat ETM+ and OLI surface reflectance data
I want to do a time-series analysis on Landsat surface reflectance data for an extended period of time (2005-2018), which requires integration of Landsat 5, 7, and 8. Is there any procedure to make ...
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