Questions tagged [cloud-optimized-geotiff]
A cloud optimized GeoTIFF (COG) is a regular GeoTIFF file, aimed at being hosted on a HTTP file server, whose internal organization is friendly for consumption by clients issuing a HTTP GET range request.
74 questions
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Custom colormap not working as expected for COG
I have a tif file in COG format which I am trying to render on browser using deckgl. I am using titiler based server for serving the file. When I have data url as: data: 'http://localhost:8001/cog/...
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COG creation with GDAL and rendering with deckgl
I am working on an application to render raster images on browser. I am having Cloud Optimized GeoTIFF (COG) based approach. I generate COG for input raster as: def generate_cog(input_path, ...
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Optimal MapServer configuration for GeoTIFF COG with WMS
I'm trying to configure MapServer to serve a Cloud Optimized GeoTIFF (COG) through WMS service and would like to fully leverage the advantages of this format (tiled access, improved performance, etc.)....
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1 vote
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Why does the header size increase in COG with larger file sizes?
I am trying to understand the header structure in Cloud Optimized Geotiff (COG). I've learned that in standard GeoTIFF, the file structure starts with an 8-byte header followed by the Image File ...
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How to reproject TIFFs to COGs and have TILING_SCHEME info in the output files when using GDAL?
Issue presented using GDAL called from Python I have a TIFF file, src.tiff. I want to reproject it and create a COG, dst.tiff. To achieve that, I do the following: from osgeo import gdal warp_opts = ...
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Reading file from Google Cloud Storage with rasterio
I try to open a file from Google Cloud Storage (a cloud-optimised geotiff) using rasterio directly without downloading the whole blob manually. In this example, I simply want to download the number of ...
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Use of Scale_Factor when reading a GeoTIFF file
I'm a brand new baby to processing GeoTIFF files. I'm wanting to work on a layer viewer from files available online. I see the parameter "Scale_Factor", or something like that. How does ...
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Why my layer is entire grey
I'm trying to display a COG file dynamically from a blob. The code in JavaScript I'm using is the next one: import GeoTIFF from 'ol/source/GeoTIFF.js'; import Map from 'ol/Map.js'; import TileLayer ...
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How to efficiently read values of points from COG / STAC
I am trying to read the values of 40.000 points from a STAC catalog that covers 6 years, for all dates available in the catalog. I am expecting around 17520000 values in total. The STAC catalog stores ...
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Change GeoTIFF / COG Area_OR_POINT Metadata Parameter
I want to change the gdal metadata parameter "AREA_OR_POINT" of a GeoTiff or COG file. I start with the GeoTiff and process it into a COG, so it does not matter at what point the parameter ...
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Failing to load COG as tiles with CDN OpenLayers?
I have a 250 MB, 9 band Cloud Optimized GeoTIFF in an Azure Container which I am trying to retrieve overviews from to display in a browser with CDN OpenLayers, but I keep running in errors with every ...
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Generating COG with Geotools
I see there are a few test cases to generate a tiled and even a BigTiff GeoTIFF in the GeoTools repository. E.g. https://github.com/geotools/geotools/blob/d261ee2eec4022cb847d20aa5223e5a6c37992c7/...
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COGs as WMS data source for GeoServer
We have a problem setting up the GeoServer for a specific scenario: in total we have more than 12.000 images (in COG format, located in s3 bucket) that shall be published as WMS service. The images ...
1 vote
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Issues when creating ImageMosaic from COGs in GeoServer
I'm trying to complete this tutorial because it best describes my use case for using GeoServer (to serve COGs and ImageMosaics of COGs stored in S3 thru GeoServer WMS) and I am encountering some ...
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Comparing COG and other rasters, Do fast 'gets' mean display benefits? only when serving from cloud? or also when on network and local drives too? [closed]
The same image raster in 3 formats, TIF, COG, JP2. COG have fast GET. Is the fast 'get' represented in fast display when panning? Am I supposed to see COG out perform the others when: if all 3 are on ...
