Questions tagged [composite]

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Multiple tile imagery in Google Earth Engine

I am creating a map layer in Google Earth Engine using Sentinel-2 data and no matter what I set my bounds too I can only get it to display one tile. I know that I have mapped things before that aren't ...
Macall Hock's user avatar
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34 views

True Colour Composite image is Red. I have used sentinel2 images

I am trying to do Land Use Land Cover Analysis on QGIS using sentinel-2, however when I try to do composite band with band 4,3,2, the image is predominantly red and nowhere close the what it should be....
Ruru's user avatar
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2 votes
2 answers
97 views

Compile 4 bands in separate images QGIS

I'm struggling with a multispectral drone imagery composition in QGIS. Each drone's camera shot creates 5 images: RGB (don't caring right now), NIR, green, red edge and red. I need to do a composite ...
Deskrub's user avatar
  • 23
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1 answer
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Filter out blue patches in greenest pixel composite - GEE Quality Mosaic NDVI change image Sentinel-2

I am making greenest pixel composites from Sentinel-2 SR (using the quality mosaic tool in GEE based on NDVI). I then subtract two greenest pixel composites to get a change in NDVI image. These blue ...
Erin's user avatar
  • 157
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0 answers
48 views

Bamboo Index value for Sentinel-2 not rendering between -1 and +1

I created a composite band using last 5 years i.e., 2023, 2022, 2021, 2020, 2019 Sentinel-2 image for NDVI map and SI (Soil Moisture Index) map preparation. Then I created Bamboo Index (BI) map from ...
Pushkar's user avatar
  • 83
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0 answers
74 views

Different Band Values For NDVI Calculation For Composite Band

I created composite map using individual NDVI map of Landsat-8 from 5 years. However, I am confused with the NDVI value rendered after creating composite map. I got different values of NDVI for ...
Pushkar's user avatar
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0 answers
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NDVI from Composite Band using ArcMap [duplicate]

I am using ArcMap. I created a composite band for each 5-year using band i.e.,2,3,4,5,6,7,8. I then calculated NDVI index and created NDVI map for each 5 years. I now wanted to create NDVI map of 5 ...
Pushkar's user avatar
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101 views

Maximum NDVI greenest pixel composites to create cloud free Landsat 8 images

I am utilizing maximum NDVI to get the greenest pixel of Landsat 8 data to create cloud free composites in the Google Earth Engine. I found this GEE tutorial which is using Landsat 8 Top of Atmosphere ...
average_julian's user avatar
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0 answers
57 views

ArcGIS Desktop Composite Bands Tool is changing my band names

I have a Sentinel 2a raster that I'm trying to do a false colour composite for. The problem is that when I composite the bands, the output seems to have different bands. By deafult, the output has RGB ...
user3394385's user avatar
1 vote
0 answers
101 views

Sentinel 3 image offset

I am working with Sentinel 3 Data to create monthly composites (LST, NDVI, NDII). I noticed an offset on a few composites (5 out of 32, or all 3 combined: 15 out of 96) (this becomes recognisable e.g. ...
average_julian's user avatar
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1 answer
149 views

Overlapping different year NDVI Map using ArcMap

I have created a NDVI time-series map for 5 different years. Now I want to prepare a combined raster band of the 5 years' time interval to form a single combined raster band. How can this be done in ...
Pushkar's user avatar
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1 vote
0 answers
210 views

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 ...
Eleanor Elizabeth Wratten's user avatar
0 votes
1 answer
80 views

Problem with s2cloudless and median. Image with only 1 pixel!

I found a problem when using s2cloudless mask, trying to make the composite and then clip it with a polygon. I've found this thread explaining how to use s2cloudless: Displaying the cloud free ...
Fabio DR's user avatar
0 votes
1 answer
359 views

Extract By Mask Tool is changing my composite raster bands

I wanted to extract an area (as set by a polygon) from a composite band raster using the Extract by Mask tool. Once I've done it, I've changed the RGB symbology to the correct bands specified by ...
mvgmvg's user avatar
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1 vote
1 answer
257 views

Exporting MODIS AOD monthly(mean) composite for 5 years

I am writing a code in Google Earth Engine, in which I want to export the image composite of mean monthly MODIS AOD for 5 years. I am writing the following code, but whenever I try to run it the ...
VIVEK's user avatar
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0 votes
2 answers
435 views

What's correct order of resampling, reprojecting and composing ImageCollection in GEE?

I want to resample, reproject and compose an image collection in python using the GEE API. My script now is this adm0 = ee.FeatureCollection("FAO/GAUL/2015/level0"); filter = ee.Filter....
justin fiedler's user avatar
0 votes
1 answer
400 views

Create false color images on Earth Engine

I want to calculate some band ratio images on e.g. Aster imagary and display them as false color image. For example I compute band ratio images on Aster as follow: var BR1 = AsterImageMosaic.select('...
Solmaz's user avatar
  • 149
2 votes
1 answer
1k views

How can I create a mean or maximum value composite raster from a set multiple rasters in QGIS?

I know of Build Virtual Raster and Merge methods which combine a set of rasters into a single raster. However, I do not know if the resultant raster is a mean or max or any other composite type. I ...
underworld's user avatar
4 votes
2 answers
594 views

How to extract periods in collections in GEE?

I have the following code where I calculate the greenest pixel composite for the months 5-9 from Landsat 7. var geometry = /* color: #d63000 */ /* shown: false */ ee.Geometry.Polygon( ...
geo_dd's user avatar
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1 vote
1 answer
333 views

Landsat Temporal Composite overlapping paths very different pixel values Google Earth Engine

I use GEE to create temporal composites from Landsat imagery (right now using Landsat 8 Collection 2, but same issue with Collection 1 or Landsat 7) for a particular island. I noticed that parts of my ...
Alejandra Ortiz's user avatar
1 vote
1 answer
861 views

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....
Sean Cheng's user avatar
2 votes
0 answers
49 views

Why are these Landsat composite exports vastly different sizes from GEE when they shouldn't be?

I'm trying to export annual composites of Landsat data in Google Earth Engine of two regions of interest (below ) var LakeRegion = /* color: #98ff00 */ee.Geometry.Polygon( [[[-81....
Rebecca's user avatar
  • 21
3 votes
1 answer
116 views

How can I create a 10 day composite image of the snow cover extent using QGIS?

I have 10 singleband rasters of the snow cover extent (1 raster/day from 1st of December to 10th of December). I have to create a composite image that merges all of them. I tried the r.composite tool ...
Enache Ionuț's user avatar
-1 votes
2 answers
203 views

Creating composite band image with Sentinel 2 data using ArcPy

As we know sentinel satellite data have many sub folder. I want to create composite band of each datasets with the band 2, band 3, band 4, band 8 which are located in one folder(10m) and band 11, band ...
siddhartha dhara's user avatar
1 vote
0 answers
78 views

How to speed up a complex process of compositing multispectral images in python?

I would like to speed up my process. I have a one month time series which consists of 5 images (Sentinel-2) taken over several days. Each image is made up of the same bands that I selected. After ...
Jando's user avatar
  • 89
2 votes
0 answers
193 views

Remove scene edge pixel error in annual composites in GEE

The median reducer over the cloud masked image collection is unable to remove the edge pixel error at a few scenes. Although the cloudmasking function has the code to remove such edge pixels not ...
Rakesh Kumar's user avatar
2 votes
2 answers
366 views

Maximum Likelihhod Classification - Error 010108 and Error 010067

I'm trying to run a supervised classification on a Landsat8 multi-band raster in ArcMap. Every time I run the classification, it returns Error 010108 and Error 010067. The 010108 error says The number ...
mfigura's user avatar
  • 35
-1 votes
1 answer
481 views

Creating composite band image form multiple Sentinel 2 raster data using ArcPy

I have multiple Sentinel 2a raster images in separated folders at same location, which means every image is in separate folder. Now I want to create composite band of each raster. I have written a ...
Siddhartha Dhara's user avatar
2 votes
1 answer
479 views

Prevent loss of timestamp when mapping over image collection

I am using the below code (taken from this post) to make monthly composites of cloud masked S2 data but the reduce.median won't work because my ImageCollection doesn't have a timestamp. Does anyone ...
aewindle's user avatar
  • 101
2 votes
1 answer
1k views

Count connected pixels (GEE)

I am working on a code to detect/count the patches of burned areas in an image. I thought using the function connectedPixelCount() in GEE would help me in doing so. However, the latter seems to not ...
farhat's user avatar
  • 151
0 votes
1 answer
219 views

Calculate weight using distance from point for Weighted Reductions in Earth engine

I want to calculate the total yearly NO2 emission from the power plants by using Sentinel-5p NO2 data. First I defined my aoi and sum all 365 images into one image using ee.Reducer.sum(). After that ...
Niyamat Ullah's user avatar
3 votes
1 answer
2k 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 ...
immarried's user avatar
  • 165
0 votes
1 answer
319 views

R: Annual composite based on the median: How to get the index of the original layer for each pixel?

What I want: I have a list of rasterstacks which are timeseries (300+ layers) for different bands. The timeseries are irregular, and therefore I want to create annual composites based on median ndvi. ...
Louise's user avatar
  • 3
1 vote
1 answer
2k views

GEE unsupervised classification (clustering) of Landsat 8 cloud free composite - User memory limit exceeded

Can anyone explain why I am getting the memory limit error when trying to classify using the wekaKMeans algorithm over a cloud-free composite of Bangladesh? I'm trying to differentiate mangrove pixels....
Samual Chance's user avatar
0 votes
0 answers
175 views

MODIS LST maximum value composite

I am using eight day composite MODIS LST data MOD11A2. How do I make a monthly composite from four 8-day composite data taking the maximum value out of four in the output raster? Initially I went for ...
Ni J's user avatar
  • 1
0 votes
0 answers
117 views

How to find Dryest Pixel of an ImageCollection in Google Earth Engine? (Dryest pixel composite)

I want to create a composite with the dryes pixels of an ImageCollection. I know how to make a greenest pixel composite, but I have no clue how to make a dryest pixel composite. Is there a function ...
loloj0's user avatar
  • 390
4 votes
0 answers
24 views

Replacing polygon within composite relationship without deleting tabular record? [duplicate]

I have a geodatabase that contains a table, a point feature class, and a polygon feature class. Each record in the table has both a related point and a related polygon, so all one-to-one ...
user1262469's user avatar
5 votes
1 answer
526 views

Improve washed out blurry composite Landsat 8 image in QGIS

I want to create a composite image using Landsat 8 bands. I followed the steps to do so (creation of virtual layer, high resolution, separate) and adjusted the bands' colors (red 4; green 3; blue 2) ...
Elias Ch's user avatar
4 votes
2 answers
807 views

Using Landsat 5 TM 8-Day NDVI Composite?

I'm working in a project where I need the NDVI for some areas from Uruguay for the period 1988-1993, and I found this product "Landsat 5 TM 8-Day NDVI Composite" but I'm not sure of how it was ...
Paula G's user avatar
  • 41
2 votes
1 answer
1k views

Google Earth Engine. Looking for a way to have information for each location in the mentioned time period based on the non-cloudy layers

I am trying to work with landsat5 in Google Earth Engine and get some information for a list of locations (I have long/lat of the locations and their postal codes in a Fusion Table). I am looking ...
Mahdi_Shooshtari's user avatar
12 votes
1 answer
1k views

QGIS composer add attribute table with repeating columns

I need some help with QGIS print composer. I use the atlas composer and I try to use add attribute table from layout tab. I have create my expression where I want to print in composer. field ...
jessie jes's user avatar
  • 1,061
-1 votes
1 answer
61 views

How to ensure that a composite locator respects the settings of the component locators?

This question is asked and answered for the benefit of anyone else who may struggle with this specific scenario. Background: Two existing locators, each configured to write a Reference ID for ...
gischimp's user avatar
  • 184
1 vote
1 answer
307 views

Batch Processing single band raster to create multi spectral images using arcpy.CompositeBands_management?

I am kind of new to python but I am trying to batch process single band raster images to create multispectral imageries using arcpy Composite Bands. I have 24 single band rasters (Bands 1 - 3 ) all ...
Vince's user avatar
  • 121
8 votes
2 answers
2k views

How do MODIS products naming conventions work?

If I have the product MOD13Q1.A2014001, does it represent the previous 16 or the 16 days after January 1st? I.e., the product is made with 16 days, but how to determine if it was taken the previous ...
Esteven Muriillo's user avatar
2 votes
1 answer
469 views

Landsat 8 composite image using different resolutions?

I have created a composite image of Landsat 8 using bands 2 to 7 (blue, green, red, NIR and SWIR) using ArcGIS 10.1. For bands 2-4, I've pansharpened them to 15m spatial resolutions using the ...
green_socks's user avatar
25 votes
1 answer
51k views

How to make band composite image in QGIS

I am wondering how I can make a band composite from three large bands files from Landsat? I was using option Raster>Miscellaneous>Merge but when I try to do it it crashes.
Dragan's user avatar
  • 441
5 votes
1 answer
1k views

IR as 4th band in RGB composite (ArcGIS)

In Symbology tab of a raster in ArcMap, in the section of Pan-sharpening, there is an extra option to check at the bottom: "4th-band Infrared Image" along with its weight: I guess I have to add a ...
adamczi's user avatar
  • 739
2 votes
1 answer
1k views

Creating composite band mosaic of sentinel 2 data with arcpy

I previously useda simple script that went through many Landsat satellite images, and for each folder it found it made a composite band raster. The script was as follows: import arcpy import os ...
user3652893's user avatar
7 votes
1 answer
422 views

Stacking Vector Layers in TileStache

I am serving several vector tile layers of different geometries (point, line & polygon) in TileStache using VecTiles:Provider, with this cfgfile: { "cache": { "name": "DISK", "path":"...
Hasan Mustafa's user avatar
2 votes
1 answer
691 views

ArcGIS Composite Geocoder Search by Address or Streets Intersection

I'm struggling with the configuration of a composite geocoder. I have a table of address points consisting of House number Street name and a table of street segments consisting of Street name ...
twoLeftFeet's user avatar