Questions tagged [composite]
The composite tag has no usage guidance.
53 questions
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GEE Temporal Collection Landsat 8 C2L2T1 : Error: map(ID=0) Image.multiply: If one image has no bands, the other must also have no bands. Got 0 and 1
I am struggling with an Error of missing Bands from a temporal Landsat8_C2_L2_T1 Image Collection while retrieving the temperature over a time range.(tried it with 1 year and 10 years. same problem.)
...
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55
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Fill gaps in one high resolution raster with data from another low resolution raster using QGIS
I have a high res (5m) image with data gaps due to cloud cover. I want to fill these gaps somehow, and have a lower res (30m) raster which has data in these gap areas. I've tried merging in QGIS, but ...
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98
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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....
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2
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218
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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 ...
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36
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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 ...
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1
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0
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168
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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. ...
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166
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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 ...
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346
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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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90
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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 ...
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516
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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 ...
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315
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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 ...
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2
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587
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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....
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1
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501
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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('...
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1
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1k
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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 ...
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2
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685
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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(
...
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443
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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 ...
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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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52
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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....
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1
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149
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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 ...
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221
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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 ...
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82
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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 ...
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216
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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 ...
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2
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431
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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 ...
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1
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533
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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 ...
2
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1
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530
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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 ...
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1
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2k
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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 ...
- 161
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1
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232
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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 ...
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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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329
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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. ...
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1
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2k
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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....
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181
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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 ...
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118
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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 ...
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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 ...
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584
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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) ...
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2
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832
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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 ...
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1
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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 ...
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1
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1k
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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 ...
- 1,061
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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 ...
user41185
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1
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324
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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 ...
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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 ...
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520
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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 ...
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55k
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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.
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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 ...
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1k
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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
...
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436
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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":"...
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732
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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
...
- 414
3
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1
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736
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Merge and export two layers that utilize blending modes
I have spent more time than I can to admit trying to come up with a solution that doesn't require bringing the layers into Photoshop or the GIMP (which would take an insane amount of RAM/swap space to ...
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639
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Python Script to iterate numerous, single-band rasters for arcpy.CompositeBands [closed]
I have a large collection of single-band geotiffs (NIR, Green, and Red) that I would like to composite using a Python script. The goal is to iterate through multiple folders in a main directory, ...
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Raster to polygon with RGB composite using Arcgis [duplicate]
I am trying to convert an RGB composite to a shapefile to use with. The raster to polygon function returns with three shapefiles with "grid_code" of the value of each of these three channels. I am ...
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1
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1k
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average certain raster cells in R
If I have two rasters, let's say x1 and x2, that are the same dimensions, how can I take the average of the two but only where both have data to have a third raster x3 that is a composite of the first ...
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