Questions tagged [landsat-8]
Use this tag when asking question related to the 8th satellite in the Landsat program.
315
questions
0
votes
1answer
25 views
Installing packages for ACOLITE atmospheric correction; RuntimeError - HDF4 DLLs
I would like to use ACOLITE atmospheric correction with python, however, I cannot install pyhdf.
The RuntimeError is following:
RuntimeError: Cannot find required HDF4 DLLs -- check LIBRARY_DIRS
I ...
0
votes
1answer
20 views
Accessing single scene image file in Google Earth Engine
I am reading the example in Google Earth Engine was many using the Image Collection but I can't find a single scene reading the image so I am trying to calculate for single scene using Landsat 8 OLI ...
0
votes
1answer
22 views
Generate classification schema in ArcGIS Pro using labeled raster - fail
Trying to do supervised classification of L1TP Landsat 8 OLI bands using USDA Crop Data Layer .tif file through ArcGIS Pro. The Crop Data Layer file has one band, with labels like "Corn", &...
0
votes
0answers
16 views
What's the lat/long coordinates in atmcorr.gsfc.nasa.gov?
I want to get Atmospheric Correction Parameter Calculator using https://atmcorr.gsfc.nasa.gov/. in this site request latitude and longitude coordinates.
My question is what are these coordinates? ...
1
vote
1answer
38 views
How to add to the map all the images on a image collection with cloud pixels masked on Google Earth Engine?
I'm trying to add to the map automatically trough a function a set of images from a landsat8 Image Collection to which previously I applied some filtering and a cloud masking function. I'm able to add ...
0
votes
0answers
13 views
Fill no data pixels for specific area (not the whole image) resulting from cloud masking of Landsat 8 multi temporal composite (Google Earth Engine)
I need to conduct a Landuse classification of New Caledonia. I therefore used the Landsat 8 satelite images of one year and created a multi temporal mosaic by a mean function.
As most of the areas ...
0
votes
0answers
27 views
Google Earth Engine. Calculate Cloud and Cloud shadow for a especific region in am image collection of LANDSAT 8
I am working with hydrosedimentological data from a lake in my region. we are generating data on the concentration of suspended sediments, from the red band, for the entire history series of landsat 8 ...
0
votes
0answers
16 views
Coregistration of PALSAR and Landsat-8
I'm working on forest biomass estimation with Alos-Palsar and Landsat-8 data for 2015. For this I need to coregister the scenes from Alos-Palsar and Landsat-8. I would like to know which open source ...
0
votes
0answers
26 views
Landsat 8 extracted pixel values for up North: 'pixel_qa' value of 322
I am trying to get landsat reflectance values corresponding to field plots spread all over Finland using the Google Earth Engine. As you know, Finland is up North, between latitudes of ~60 and 70 ...
0
votes
0answers
13 views
Sentinel-2 and Landsat-8 future acquisitions
In order to schedule in-situ measurements at the time of Sentinel-2 and Landsat-8 overpass for my AOI, I would like to access their future acquisitions plans for the summer 2020 (July/September).
I ...
0
votes
1answer
27 views
Missing some images of Landsat 8 Surface Reflectance data for some regions in google earth engine
I want to have the whole image collection of Landsat 8 Surface Reflectance data for my region (Path: 196, Row: 56) from 01.01.2014 to 31.01.2020. But GEE gives me only 66 images for this period while ...
0
votes
0answers
15 views
NDWI from Landsat-8 imagery
I am trying to calculate NDWI from Landsat-8 Band3(range:-113 to 11785) and Band5(range -89 to 12960) but the range of the resultant NDWI image is not valid (range: -215.181 to 1151.02). What is the ...
0
votes
0answers
26 views
Hot Spot Analysis for an NDVI Time Series
I am working with a collection of Landsat 8 images with pixel-wise NDVI computations over a period of time and I'm hoping to pin point areas within the region of interest where NDVI change is greatest....
2
votes
1answer
20 views
Bandmath error when calculating RVI in Landsat data
I'm using the LANDSAT/LC08/C01/T1_RT_TOA dataset. Using this I want to calculate the RVI of a region. This is done by dividing the Near Infrared band (B5 in the dataset) by the Red band (B4 in the ...
1
vote
0answers
39 views
How to apply convolutional neural network over a time series of Landsat images
I am implementing a fully convolutional neural network (specifically U-Net) over a time series of Landsat 8 images to predict land cover change. I am following the demo notebook for the predictions. ...
1
vote
1answer
28 views
Landsat-8 level 2 DN to reflectance
I have downloaded a series of Landsat-8 level 2 images. My main purpose is to obtain reflectance out of them; however, the scale of the different bands does not look like reflectance (e.g. Blue Band ...
0
votes
0answers
15 views
How to remove the black edges around Landsat 8 images in Erdas Imagine
I am new to Erdas Imagine and would like to know what is the right workflow for removing the Black "null" Edges around Landsat-8 Images.
When importing the scenes to .ecw, the color and contrast ...
0
votes
1answer
13 views
Differences between imported Landsat-8 images in Erdas Imagine
What is the difference between the images created after importing with USGS Landsat 8 dialog, in particular, the suffixes _msi and _msitir? I understand that they stand for multispectral image and ...
0
votes
0answers
22 views
Landsat-8 Image Enhancement for Mosaic in Erdas Imagine
My AOI lies inside a mosaic of 6 Landsat-8 squares and all the scenes have less than 10% cloud coverage. The rows of images of each of the 3 paths were taken only seconds apart.
When importing the ...
1
vote
0answers
18 views
Is there a way to bulk download Landsat data through cmd prompt or Python?
I know I can download landsat data through earth explorer and they have their own Bulk Downloader here: https://lta.cr.usgs.gov/EEHelp/BulkDownloadApplication
But I am wondering if there is ...
0
votes
0answers
23 views
i.landsat.toar in GRASS 7.8.2 “Unable to open header file”
I'm working with QGIS 3.12.1 and I'm using the GRASS tool i.landsat.toar with Landsat 8 images to convert DN to reflectance. Unfortunately, at every attempt I get this error:
C:\Users\Jacopo e Teo\...
0
votes
0answers
78 views
Calculating the land surface temperature in Google Earth Engine
Just wondering if anyone had any suggestions on how to calculate Land surface temperature (LST) across Landsat missions 5,6,7 within Google Earth Engine
I have found a few scripts adopting different ...
0
votes
1answer
67 views
Exporting an image in Google Earth Engine
I'm quite new to Google Earth Engine and I think my issue might be quite easily resolved, but I've made these two codes as I'm having issues with each of them. I'm trying to export the landsat imagery,...
0
votes
1answer
67 views
Landsat 8 Imagery not Creating Composite RGB Image with Pansharpening Correctly
I am having some serious problems attempting to merge the R,G,B bands from Landsat 8 and then apply pan sharpening to them. Unfortunately, I am not familiar enough with the process to figure out ...
1
vote
0answers
32 views
How to add different NDVI layers of Landsat 8 data from 2014 to 2019 to a map in Google Earth Engine?
I am trying to calculate NDVI for each month and masking NDVI images with lte(0) filter to identify water bodies and show the timelapse between encroachment area of waterbodies in different years and ...
0
votes
0answers
34 views
Problem when combining raster in QGIS
I am trying to combine rasters corresponding to radiometrically corrected Landsat 8 bands with QGIS 3.4. Reading the internet I know that it is necessary to write the value 0 in the option "Input ...
1
vote
1answer
110 views
Fill null pixels resulting from Landsat 8 SR image cloud masking (Earth Engine)
I want to collect cloud-free surface reflectance images using a cloud masking function and then compute NDVI. However, the output image has some transparent areas that can't be used in the next step. ...
3
votes
1answer
136 views
RGB composite of Landsat 8 bands not plotting correctly (Python, GDAL)
I am trying to create a natural color (RGB) image from Landsat 8 data (11 bands). Bands 4, 3, 2, correspond to red, green, blue respectively. When I stack them, however, the images i am getting are ...
0
votes
0answers
96 views
earthpy.spatial stack() -function and data type
I have Landsat-8 OLI images in directories named after image WRS-2 scenes. I tried to compose script that would iterate these directories and stack rasters within each directory - using earthpy python ...
1
vote
1answer
100 views
Landsat 8 surface reflectance data range and cloud mask uncertainty (Earth Engine)
I downloaded a composite using code given below, but all values are not looking like surface reflectance values (0..1), but range from 200 to 700, for example (like raw data digital numbers). Or am I ...
2
votes
1answer
121 views
Different min and max NDVI values with different approaches using Google Earth Engine
I'm trying to calculate the vegetation fraction for land surface temperature calculations of a single Landsat 8 image. I need to find the min and max NDVI of the scene.
I've masked the image and ...
1
vote
1answer
130 views
How to export raster of Mean Annual Land Surface Temp from Landsat Imagery?
I am using google earth engine to estimate Mean Annual land surface temp of a local scale from 1984 to 2019 from landsat Imagery.
I am having trouble determining a script for my goal, there are many ...
1
vote
1answer
56 views
How to randomly stratify sampling within landcover classes?
I'm working on an accuracy assessment of a classified landsat image and I'd like input on the best possible way to generate random points across both the classified image and a ground truth image I ...
1
vote
1answer
44 views
Subtract two pixels-only- layers using rectangle extent
I have coe in GEE that calcultes the NDVI in a given polygon, from 2000 (based on landsat 7) and 2019 (landsat 8) ,create for each one a layer with pixels that their NDVI value is higher than 0.3 and ...
0
votes
1answer
29 views
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 ...
1
vote
1answer
64 views
Calculating EVI in ArcMap for Landsat 8 Image gives values ranging from 55155 to -23235 [closed]
How do I calculate EVI in ArcMap for Landsat 8 Image?
My values are ranging from 55155 to -23235.
I have tried using the formula:
2.5 * [(band 5- band 4)/ (band 5 + 6*band 4-7.5* band 2) + 1]
I ...
0
votes
1answer
88 views
Querying Landsat 8 night images in Google Earth Engine? [duplicate]
Apparently, Landsat 8 occasionally acquires images at night-time during ascending passes. However, in the Google Earth Engine data catalogue (https://developers.google.com/earth-engine/datasets/...
-1
votes
1answer
45 views
using handset 8, remove snow and use less cloud Landsat image
I want to take out snow and use a less cloud Landsat image. I am not sure the code from var image.... I think this is the right order (filterData, sort, median and map) but it does not work.
...
1
vote
1answer
38 views
Landsat 8 QA band conversion error?
I downloaded Landsat 8 NDVI bands from the USGS (instead of calculating them myself). The QA band that came with has values different than I see in the Landsat 8 user guide.
Using R I did a quick ...
2
votes
1answer
104 views
Maximum and mean value is different in Python than QGIS 3.6
I read a Landsat-8 TIFF file using Python Rasterio to compute the max and mean using the following code:
path = "LC08_L1TP_115036_20181025_20181031_01_T1_B7.TIF"
test = rasterio.open(path).read()
...
1
vote
0answers
31 views
How to export NDWI images one by one?
I am using GEE and I'm pretty new with this engine. I'm trying to download several images from Landsat collection. I provide the script for you.
Here is my question:
How can I download each NDWI ...
1
vote
2answers
159 views
Speeding up pan-sharpening with OTB plugin for QGIS (orfeo-toolbox)
I use QGIS 3.6.1 with the plugin orfeo-toolbox to create a pan-sharped Landsat 8 image. I use the BundleToPerfectSensor function because calling the Pansharpening function results to the error: Inputs ...
2
votes
1answer
275 views
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 ...
0
votes
1answer
108 views
Mask clouds across multiple images using Google Earth Engine
I Have multiple Landsat8 images at the same place in different years.
I want to have a cloud mask for each image, then merge the mask so that all images will be masked with a same aggregated mask.
I'...
1
vote
0answers
205 views
Fraction of vegetation calculation for the whole Landsat Image Collection with Google Earth Engine
I'm trying to calculate Land Surface Temperature for my image Collection of 294 Landsat 8 images. I've calculated NDVI and try to apply the solution given in the previous question: Calculating LST ...
0
votes
0answers
25 views
Merge and CLASSIFY ImageCollections with different pixel size
I am trying to perform a classification on a merged imageCollection that includes median annual images for both the Landsat 8 and Sentinel-2 satellites.
To merge the two datasets, I resampled all ...
0
votes
0answers
27 views
Masking Landsat-8 and Modis (Aqua) with same shape file doesn't result in same shape
I was trying to mask Landsat-8 and Modis (Aqua image). FYI, I have converted the MODIS image to the same projection as Landsat and same resolution as 30m. Finally once i am done with masking using ...
0
votes
1answer
86 views
Why can't I perform supervised classification using Landsat 8 SR images in Google Earth Engine?
This is the link to the code.
https://code.earthengine.google.com/ba342d996547c4fa8151bc99052036cf
This error message appears
var ColecaoL8 = ee.ImageCollection('LANDSAT/LC08/C01/T1_SR');
var ...
1
vote
2answers
32 views
Query about Satellite Thermal Imaging [closed]
I am working on my undergraduate thesis and for this I need access to Satellite Thermal Imagery. I have spent some time looking at how to get these Images. I know from my investigation in the last 1 ...
2
votes
1answer
296 views
Time series for MultiPoint geometries in Google Earth Engine
I am trying to generate time series for a set of points in earth engine. I am attempting this for multiple datasets, but for now let's do NDVI with Landsat 8. My problem lies (i think) in step 6. ...
