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Questions tagged [median]

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USING THE SENSOR INVARIANT ATMOSPHERIC CORRECTION - SIAC, CREATING AN IMAGE COLLECTION WITH THE OUTPUT FOR FURTHER ANALYSIS IN GEE

My aim is to atmospherically correct sentinel 2 level 1c image in Ethiopia, and then perform a cloud mask. My next aim is to create a monthly median composite of the atmospherically corrected / Cloud ...
David Appiah-Gyimah's user avatar
1 vote
0 answers
35 views

How to make TIFF output file with coordinate reference system (CRS)

I am working on TIFF files to produce the median matrix for them, I am using the following Matlab code for that. How I can make the output as .tif while keeping the coordinate reference system (CRS)? ...
user232920's user avatar
3 votes
1 answer
96 views

Find the median line from the input broken line

I already tried to use ST_Simplify, but as the result Wrong Line was gotten, because the function reduced the number of points significantly and curvature was lost. Is it possible to get the Desired ...
Slava's user avatar
  • 65
1 vote
1 answer
87 views

QGIS: Median for Raster layer zonal statistics

I want to know the median value of Raster A based on the value-defined areas of raster B. Using the Raster layer zonal statistics, I receive "only" value of sum, min, max and average. I used ...
weltraumkojote's user avatar
1 vote
1 answer
250 views

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 ...
Nikos's user avatar
  • 1,093
2 votes
1 answer
2k views

median function of GEE

I want to do some reprocessing with ee.ImageCollection("NOAA/VIIRS/DNB/MONTHLY_V1/VCMSLCFG"). For example,I want to caculate median value of each pixel in 12 images. var imageCollection = ee....
黄泽盛's user avatar
1 vote
1 answer
362 views

Getting median value of attribute for duplicate polygons and dropping duplicates using GeoPandas

I have a DataFrame that resulted from spatially joining a digital elevation map with a square grid map. This unexpectedly resulted in duplicate rows where two rows will have the same "geometry&...
SS-Salt's user avatar
  • 139
0 votes
1 answer
223 views

To remove clouds of Landsat 8 surface reflectance products

I want to remove clouds from the collection of images and replace new values with pixels of clouds. I have written code, but it's not working. Here is my code: var table = ee.FeatureCollection("...
nadia's user avatar
  • 1
1 vote
0 answers
24 views

Choosing Window Operator for 1-D Elevation Data

Have an interesting theoretical question here: Say you have a swath of elevation data that is essentially a line of densely spaced points. The data is noisy, so a simple median filter is something I ...
jameshgrn's user avatar
0 votes
1 answer
1k views

NDVI time series with Sentinel-2 in Google Earth Engine

I want to calculate the time series of the NDVI with Sentinel-2 of a specific area of Australia. I started from this code: Time series analysis of NDVI using Google Earth Engine Substituting Landsat ...
Lucrezia Tosato's user avatar
1 vote
1 answer
409 views

Google Earth Engine: Get the ID of images used for median calculation

In Earth Engine it is quite easy to create a median image out of several images from an image collection. But is there any way to get the information which particular images were used to create the ...
Simon's user avatar
  • 11
2 votes
0 answers
1k views

Median vs mean in GEE

I applied the cloud masking on Sentinel 2 imagery in GEE. The original image collection without masking clouds is this: First I tried the script exactly as written at the bottom of this page Sentinel-...
Paris's user avatar
  • 591