Questions tagged [composite]

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12 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('...
1
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1answer
34 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 ...
3
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2answers
188 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( ...
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1answer
89 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 ...
1
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1answer
114 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....
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0answers
31 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....
3
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1answer
52 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 ...
-1
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2answers
107 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 ...
1
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0answers
24 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 ...
2
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0answers
66 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 ...
0
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1answer
98 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 ...
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1answer
217 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 ...
2
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1answer
184 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 ...
2
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1answer
517 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 ...
0
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1answer
139 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 ...
3
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1answer
1k 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
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1answer
214 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. ...
1
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1answer
1k 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....
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0answers
132 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 ...
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0answers
96 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 ...
4
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0answers
23 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 ...
4
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0answers
420 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) ...
4
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2answers
657 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 ...
2
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1answer
923 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 ...
12
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1answer
934 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 ...
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1answer
40 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 ...
1
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1answer
250 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 ...
8
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2answers
1k 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 ...
2
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1answer
354 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 ...
20
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1answer
40k 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.
5
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1answer
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 ...
2
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1answer
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 ...
7
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1answer
397 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":"...
2
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1answer
533 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 ...
3
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1answer
525 views

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 ...
2
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0answers
578 views

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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0answers
1k views

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 ...
2
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1answer
1k views

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 ...
5
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3answers
3k views

Loop in ModelBuilder for compositing bands of multiple Images

I'm attempting to automate the "Composite Bands" tool somehow in ModelBuilder, but haven't been able to figure out an effective method. I have landsat 7 data that is separated into folders and each ...
1
vote
1answer
288 views

How does i.fusion.brovey in Grass 6.4.3 work?

I'm using Grass 6.4.3 in Linuxmint 16. I don't have a very big problem but I'm trying to understand what is Grass doing, if I'm applying the process correctly and if there is something wrong with my ...
0
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0answers
55 views

How to Separate Bands Through ModelBuilder [duplicate]

Q1: I have a .tiff file containing 365 bands. Each band represents a daily variable. I want to separate each band and save as a single .tiff file. In the end, I want to have 365 individual .tiff files....