Questions tagged [landsat]

Landsat could refer to the Landsat program, a remote sensing program managed by USGS and NASA. It could also mean the satellite imagery data from this program.

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Using the python gdal module to open images in the same projection but different sizes

I'm not sure this is the correct site for this but, I'm using the gdal.Open() module on python 2.7 to open Landsat GeoTIFF images. They have the same UTM map projection, but different image sizes. How do I fix the image sizes to be the same? I'd…
Alvin
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Google earth engine export to Drive not working

var roi = geometry; Map.addLayer (roi);`enter code here` var start = ee.Date ('2013-12-01') var finish = ee.Date('2013-12-30'); var dataset = ee.ImageCollection('LANDSAT/LC08/C02/T1_L2').filterDate('2013-12-01', '2013-12-30'); var Lagos =…
Ad Ben
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Radiometric corrections with R

I am trying to convert Landsat 8 files to reflectance via R / RStoolbox I am using a script with the following code: metaData <- readMeta("LC08_L1TP_183033_20210623_20210630_02_T1_MTL.txt") lsat <-…
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Import and cut (grid) satellite image via Python

Can you help me with this? I need to know which Python code (library / package) allows me to download Landsat 8 image (a specific orbit / point) directly from Earth Explorer. AND, ALSO, I will take only 3 (three) cutouts of 270 x 270 Landsat 8…
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How to export a csv file from Google Earth Engine with attribute data and associated dates in a user defined date format?

Good Day I am trying to generate an Enhanced Vegetation Index (EVI) in Google Earth Engine using Landsat 7 and 8 data. I have compiled the code below to filter the image collections, for a specific time period and region of interest, as well as to…
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Why is Sentinel-2 Map coming out Black on Google Earth Engine

I am taking a look at the FIRMS dataset on the Google Earth Engine and I'd like to see Sentinel-2 images corresponding to forest fires on FIRMS, but for some reason it comes out either very dark or, when I filter the date to September 10-13th,…
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how to retrieve Common data for Sentinel-1, Sentinel-2 and Landsat-8 on same study area

I am an amateur to GEE, Can anyone help me the script to retrieve Common data for Sentinel-1, Sentinel-2, or Landsat-8 on the same study area? I require all the three sensor's data for same-day in the same study area. This is for comparing and…
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Export each image of an image collection with visualisation parameters

I would like to export specific images as a geotiff to upload for analysis on QGIS (looking at change over time). I want to be able to export each of the images in the l8_merge collection with true colour bands. I've started with a single image…
Lola
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How to re-number Landsat 8 bands so that I can merge with Landsat 4-7 images?

I am wanting to merge Landsat 4, 5, 7, and 8 imagery. I need to adjust the Landsat 8 bands so that they match the other Landsat imagery bands. This is the basic structure of my code: // L4 collection var L4 =…
Lola
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I want to produce NDVI time series chart in GEE and I'm encountering an error "Error generating chart: User memory limit exceeded."

The following is the code I used, please help me out to solve this error so that I can be able to produce the time series plot. thanks in advance! when I run this code I get this error "Error generating chart: User memory limit exceeded." var…
Teehaysh
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Exporting multiband Earthpy masked GeoTIFF with Rasterio resulted in original non-masked file

I currently wanted to mask a stacked Landsat 8 GeoTIFF file with the Pixel QA band to remove the clouds and cloud shadows. So far, I have successfully followed the tutorial here, and have properly plotted the masked scene using a combination of…
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Is there any code for developing 30 years data for NDVI through landsat?

Is this possible to get 30 years of greenest pixel, NDVI annual mean and median data for a particular coordinate without changing the dates manually for every single year? Currently, I am using the following code and manually changing the annual…
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Python GEE to extract featurecollection timeseries from Landsat imageries

I have a featurecollection for which I need to extract timeseries of NDWI from Landsat imageries. Here is the javascript functional code I used to extract timeseries: https://code.earthengine.google.com/5992f0f029b10a1c57c8ed34e73a368f Now I am…
nishanuw
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How to compute a zonal statistics in timeseries images in Google Earth Engine?

I have computed NDVI for January 2018 to December 2018 from Landsat images that give 21 NDVI bands. I have a shapefile with three polygons; I would like to have three time-series NDVI values corresponding to the polygons in the given shapefile.…
bmishra
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SLC code not filling all Landsat 7 SR gaps

I am a beginner in Google Earth Engine code and am trying to apply the SLC-gap code to Landsat 7 Surface Reflectance images. Using resources available on StackOverflow, I generated the code below; however, when I bring the images into QGIS, there…
Sarah
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