Questions tagged [mosaic]

A raster dataset composed of two or more merged raster datasets—for example, one image created by merging several individual images or photographs of adjacent areas.

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How to mosaic/align multispectral georeferenced images into one merged file with gdal

I am trying to work my head around how to make mosaic from georeferenced multispectral images. Header of those images already contans information about GPS location. Separate image is saved as *.tif ...
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27 views

Creating condition for mosaicing images in Google Earth Engine JavaScript API

I am trying to create a mosaic of a several classified images using as criteria that every pixel has to be the same class at least for three images. A similar process can be done using the .min() or ....
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35 views

How to mosaic multiple raster datasets?

I have more than 50 raster files. I have used to mosaic to new raster tool on Arcgis and I wonder if there's anyway I can select all rasters instead of having to click one by one to add them up.
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Loop through directories and mosaic all raster TIFFs in each dir

I have 200+ directories, each directory contains x amount of TIFFs which I want to mosaic. I have a snip of code that will list the TIFF contents of all dirs under a parent directory, now I just need ...
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Generate Raster Mosaics in a folder using all TIFFs in the folder, then iterate in the next folder

I have 200+ directories, each directory contains x amount of TIFFs which I want to mosaic. I have a snip of code that will list the TIFF contents of all dirs under a parent directory, now I just need ...
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18 views

Mosaic images in double precision pixel type

I am trying to mosaic the raster images, but those images are in the double-precision pixel type and their pixel depth is 64 bit. How can I mosaic that raster image? I am using ArcMap 10.2 version. ...
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10 views

Merging multiple raster files incorrect value in ArcGIS

I have multiple rasters in .tif (geotiff) format and I´m trying to merge them into one using the Mosaic to New raster tool in ArcGIS(10.7.1). These rasters have a partial overlap between them and are ...
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1answer
18 views

Raster Mosaic changes values to 0 for some input rasters

For a while I was having an issue where the values for the first two inputs in the raster mosaic tool were not being carried over into the final product. This confused me for a couple hours and while ...
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SNAP Multi-size Mosaic problem

I am trying to mosaic 3 S2 L1C images. I used the multi-size mosaic to prevent resampling as preprocess for the mosaic-only. However the resulting image has 0 values. This is the result: Since S2 ...
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No Data when using Mosaic to New Raster

I am using the Mosaic to New Raster tool in ArcMap 10.7.1 to mosaic 4 rasters shown below. I downloaded all of them from the ArcticDEM dataset. They do not overlap and as far as I can tell they have ...
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36 views

Descartes Labs Platform speeding up scenes.mosaic

We're hoping to download many Sentinel-2 mosaics in order to deploy a deep learning model on a large region. We currently use the following steps to construct and download images: dltile = dl.scenes....
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Image Dodging (color matching algorithm) in ERDAS

I have two LISS 3 images acquired in Feb and March a year apart. I have performed atmospheric correction (haze reduction) for both the images individually before applying the color matching algorithm ...
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1answer
27 views

arcpy.MakeTableView returns empty result object on second iteration of loop

I've encountered a very strange problem involving a geoprocessing tool in ArcPy that I have spent too much time trying to solve on my own. Specifically, I have a process that iterates through a list ...
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1answer
28 views

Creating composite raster from rasters with different spatial extent without losing information using ArcGIS Pro

I am creating a composite raster using several individual rasters with different spatial extents (captured from different times), see image below. The idea here is that I want to create one mosaic ...
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35 views

How to define CRS (WGS84) of a mosaic raster file while all the parental raster files are in WGS84 in Python?

out_meta.update({"driver": "GTiff","height": mosaic.shape[1], "width": mosaic.shape[2], "transform": out_trans, ...
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1answer
80 views

reduceResolution failes in GEE

I have three images in GEE ,I would like to reproject two of them to have the dame reprojection as the third one. each of those 3 images is mosaic of all the avilable tiles from certain day. The ...
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45 views

OpenLayers/GeoServer Image mosaic

I would like to understand why I can't change the files of my mosaic directory in GeoServer. When I create my layers, I specify the URL of my directory with GeoTIFF files and shapefiles. If you change ...
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Need to assemble a matrix from several ASCII GRD files

I am totally new to GIS software. I would like to consolidate 205 ASCII GRDs files (the file format of Golden Software's "Surfer") into a single big GRD file or just a big matrix of (about 2400 rows ...
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1answer
20 views

Saving outputs from arcpy.da.Walk to the same folder

I have a number of sub-directories within my "BP Tiles" directory. Each of these sub-directories represents a different year (2016, 2017, 2018, etc.) and within each of these sub-directories is a list ...
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Missing areas when using mosaic after projectRaster or vice versa

I have 290 MODIS NPP tif tiles that I want to merge and project into EPSG 4326. mosaic_raster() works just fine (Fig 1) but when I project the global raster (with or without a template) I lose almost ...
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1answer
43 views

Mosaic multiple multi-band rasters into a single multi-band raster using QGIS

I have >50 four band rasters that I would like to mosaic into a single four band raster. SAGA mosaic doesn't seem to work since it flattens the rasters out and combines them into a single band mosaic. ...
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1answer
43 views

Arcpy ArcMap mosaic use different raster whenever nodata value

I am using ArcPy in ArcMap and have multiple Rasters (Landsat imagery) taken from a given area (Image 1). My final goal is to create a cloud free image of the complete area. Since the Rasters ...
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39 views

Mosaic 70 rasters to a new raster

Hi I have 80 rasters that I want to combine with Mosaic to new raster. 1- is the order of adding inputs important ? Is there any quicker way to add all those rasters ?]1]1
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23 views

How to mosaic a list of .jp2 files using R?

This post shows how to mosaic a list of raster files: Mosaicking rasters in R? It works perfectly when I use ".tif" files, but now I'm working with a list of ".jp2" files and the same code they are ...
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Running raster mosaic in batch process in QGIS

I am wanting to mosaic multiple rasters within the same month into a single raster. I am trying to achieve this using the SAGA Mosaic Raster Layers tool within QGIS as part of a model (via the ...
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Reducing the number of mosaic elements using gdal_merge

I have 4 thousand mosaic elements. So i would like to reduce their count. (for example to 1 thousand, merge every 4 elements) How can i do this? gdal_merge give me one big raster
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Importing HDF files into ArcMap

I have hdf files of monthly ocean productivity, but the data is not displaying on my map. I tried to unzip the file twice, define the projection, extract the subdataset, create a mosaic dataset, and ...
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Mosaicing BIG Rasters based on data values

I have some rasters that contain spectral data, and some spatially identical rasters that have the nadir information from the acquisition for each pixel. I'm looking for a way to mosaic these together,...
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1answer
106 views

Calculate statistics of raster based on plygon borders in google earth engine

I have a script in GEE that takes shepfile (sometimes with two polygons), classify it to 3 different classes and create one new layer with those 3 classes. I want to calculte statistic for each ...
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1answer
23 views

Give a specific value to mask layer

I have code that creates 3 different layers using masking, each time other different pixels get mask and the others get 1 so the final result is 3 layers that are complemntary: My problem is that ...
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1answer
80 views

Build Mosaic using gdal based on Modal value

I have an immense (~50,000) set of tiles that I want to mosaic using the mode for every pixel. The tiles have a size of 299x299 and are overlapping each other by 2/3 respectively. For the sake of ...
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44 views

Convert list of .hdf-files to .vrt in python with Gdal

I'm a little lost. I have a directory with some Landsat-8-scenes. There are files that end on .hdf and they are always accompanied by a .hdr file. What I wanted to do is to convert these scenes to a ...
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GEE - Get date of ImageCollection mosaic

I have created mosaics by date from an ImageCollection and now want to label each mosaic with its corresponding date. This is my function to label the ImageCollection: var date_label_pos = ee....
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232 views

Layer error: Number.divide: Parameter 'left' is required. error when print the dictionary

I have code that calculates NDVI, then calculate statistics inside a dictionary and then based on statistics calculte 3 layers that later on mosaiced. The problem is that for some reason I get this ...
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1answer
34 views

Using Copy Raster tool to BQA band only

I want to do vegetation, water, and soil analysis to an area using satellite imagery. My area of interest is East Java, Indonesia. Here's the map of East Java, Indonesia. I got 6 scenes of LANDSAT 8 ...
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124 views

How can I fill empty raster cells with values from another raster in QGIS?

I have 2 rasters: 1 that has many gaps in between pixels: And one that is more filled: I want to fill the empty cells from raster 1 with the cells from raster 2. Cells that are filled in raster 1 ...
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Mosaicking many rasters with large empty raster in R

Following my previous question (Subtracting rasters with different dimension, origin and extent in R), I am trying to mosaic many small glacier rasters into one large empty raster which I can then ...
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1answer
152 views

rasterio merge giving incorrect result

I have 4 separate ASCII grids which all contain the same data: 1 2 3 4 3 4 5 6 4 5 6 8 7 9 5 4 The metadata, however, is different: ncols 4 nrows 4 xllcorner x yllcorner y cellsize 1 nodata_value -...
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1answer
43 views

Mosaic to New Raster with no output

I have a large set of 4-band high resolution NAIP imagery that I had put into a mosaic and am now trying to create a raster using the Mosaic to New Raster tool. When run the tool just says 'mosaic is ...
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159 views

Cannot open TIFF in QGIS after mergin with gdal_translate [closed]

I have merged several TIFF files into a bigger one. When trying to add this image to QGIS I get the following error: Cannot open TIFF file due to missing codec. Raster layer Provider ...
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1answer
251 views

Google Earth Engine Error: When computing PCA of Sentinel -2 Mosaiced Image

I want to select an area using Rectangle or Polygon tool, mosaic Sentinel- 2 images in the selected area using the median() or mosaic() method and calculate PCA of the area. When I use a single image ...
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1answer
37 views

Arcpy Mosaicing Rasters - Output seems to be wrong

I am using the Arcpy-package for Python 2.7 (with Arcgis 10.1). I tried to write a script that is mosaicing all rasters in my directory, where they overlap it should calculate the mean for the rasters....
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1k views

gdalwarp resampling method

I'm trying to mosaic some georeferenced images using gdalwarp. But if I change the resampling method the result is always the same, why? I need to build a mosaic where the value of each pixel is the ...
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1answer
41 views

Python script tool with multivalue raster input not honouring raster path?

I am creating a custom Python script in ArcGIS that takes a rasters as a multivalue input and have run into a problem which I don't think is a duplicate (having scoured SE for many hours) My problem ...
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38 views

underwater mosaic with overlapping photos

What is the best approach to creating a mosaic with underwater photos. The photos are black and white. They suffer from non-uniform illumination, i.e. the middle of the photo is bright and the edges ...
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126 views

Mosaicing non-overlapping rasters in QGIS

I have a set of georeferenced rasters that I want to combine in a seamless layer in QGIS. I believe what I have to do is clip them by mask layer and then build a virtual raster. There is an issue ...
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592 views

What is the purpose of these SAGA raster mosaic parameters?

BACKGROUND: Using QGIS 3.8.0 Processing > Toolbox > SAGA > Raster tools > Mosaic raster layers, I do not understand the purpose of the Match and Fit parameters. Here's a screenshot of the ...
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43 views

Is there a way to connect 2 tiles of downloaded landsat data in ArcMap?

I have downloaded two Landsat 5 images because my study area is divided between the 2 tiles. I have created a composite of all the bands and then tried the mosaic tool in ArcMap but the result I have ...
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61 views

Finding overlap and sum of rasters using ArcGIS ModelBuilder?

I have about 300 rasters that I need to find the overlap and sum of to find 'hotspots'. I set each raster value to 1 and used the Mosaic to New Raster tool to create a new raster. I tested this with ...
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25 views

Mosaic rasters and clip

I have a number of satellite image rasters covering my study area. I want to mosaic and clip the output raster to my study area. Note that the images overlap each other and do not join end to end. How ...

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