Questions tagged [cloud-optimized-geotiff]
The cloud-optimized-geotiff tag has no usage guidance.
23
questions
2
votes
1
answer
17
views
Calculate height profile from cogeoTiff using rasterio
I want to create a service calculating height profiles using our CoGeoTiff LaserScan data from Austria. It has a 1m resolution at its deepest level and is about 400GB big. Generating height profiles ...
0
votes
1
answer
36
views
gdal_translate TIFF to PNG with added alpha
I am using gdal_translate to create a Cloud Optimized GeoTIFF:
gdal_translate ${lvl2_cub} ${tifname} \
-co COMPRESS=LZW -co TILED=YES -b ${gdalidx} -co BIGTIFF=YES \
...
- 4,349
1
vote
0
answers
42
views
Poor GeoTIFF display performance using JS plugins contrary to Leaflet for R package
I have question regarding displaying GeotTIFF using leaflet or react-leaflet.
There are some packages allowing displaying tiffs, for example I had used:
https://github.com/stuartmatthews/leaflet-...
- 35
2
votes
1
answer
208
views
How to save an xarray.DataArray directly as a Cloud Optimized GeoTIFF?
Is there a good way to produce a cloud-optimized GeoTIFF (https://www.cogeo.org) directly from an xarray.DataArray? At the moment it takes me a couple of steps to produce an intermediate regular ...
- 1,493
2
votes
1
answer
41
views
Generate jpeg-YCbCr tiles in GeoTIFF file with JFIF format instead pure JPEG format
Currently, my app creates GeoTIFF tiled files using following options:
PROFILE=GeoTIFF
TILED=YES
BLOCKXSIZE=xxx
BLOCKYSIZE=xxx
COMPRESS=JPEG
PHOTOMETRIC=YCBCR
JPEG_QUALITY=xx
However, some apps that ...
- 121
0
votes
1
answer
65
views
COG tiff reports valid from gdal but does not load in QGIS
I have a normal geotiff that i've converted to a Cloud Optimized GeoTiff (COGtiff) via GDAL 3.2:
$ gdal_translate image.tif image-COG.tif -of COG
it validates successfully with '...
- 1,349
0
votes
0
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36
views
Seeking ways to improve rendering of surface water in shaded-relief images
I have a question about techniques for depicting surface water features in shaded-relief (hillshade) rendering.
I’ve written some Java code for rendering elevation data from the USGS Cloud Optimized ...
- 191
0
votes
1
answer
24
views
Using VRT to mimick N bands Geotiff from a k-bands Geotiff, N >> k?
I recently discovered VRT format and I wonder if it could be suited to my problem.
I have a program A that expects as an input a N-bands Geotiff (N >> 1000). I have presently k = 200 rasters ...
- 133
0
votes
0
answers
42
views
Convert COG with CRS to dimensions with equal longitude latitude
I have some Cloud Optimized GeoTIFFs exported in a certain CRS. Although the COG was exported in with equal longitude/latitude lengths, its CRS caused the array to have unequal dimensions. (206 lat x ...
- 71
0
votes
1
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196
views
How do I add COGs from AWS S3 protocol to QGIS map canvas programmatically
I have a private bucket in S3 with COGs in it.
Following the instructions here, it's actually very simple to do it manually.
However, this does indeed only work manually.
Trying to add a COG with the ...
- 8,217
0
votes
0
answers
31
views
Quality of my TIFF file goes down dramatically
Every time I upload a TIFF to ArcMap, after I build pyramids (using a nearest neighbor algorithm) the quality of the TIFF file after it is added to ArcMap goes down dramatically. Why?
0
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67
views
rio_cogeo.cog_translate changes values in raster
I've notice that in some cases the output of rio_cogeo.cog_translate has different pixel values than the input image, as if some sort of stretch/scaling has been applied. It seems to also happen when ...
- 1
2
votes
1
answer
535
views
Fastest Possible Use of GDAL to Merge, Reproject & Convert
I have a ~10GB, Australia-wide, single band dataset consisting of 3,351 GeoTIFFs across 8 projections (Map Grid of Australia [MGA], zones 49 to 56). The data has a 2m resolution but only covers urban ...
- 709
0
votes
0
answers
66
views
How to speed up reading in specific parts of Cloud-Optimized GeoTIFFs?
After installing rasterio and pystac_client (pip install rasterio & pip install pystac_client), and importing packages:
from pystac_client import Client
import rasterio
import time
import random
...
- 324
1
vote
1
answer
65
views
How to read in polygonal section of a GeoTIFF
Here is a link to an example cloud-optimized GeoTIFF:
https://copernicus-dem-30m.s3.amazonaws.com/Copernicus_DSM_COG_10_N08_00_W068_00_DEM/Copernicus_DSM_COG_10_N08_00_W068_00_DEM.tif
I assign this ...
- 324
0
votes
1
answer
392
views
GDAL translate to COG seems altering the original data image
Trying to compare with gdal info on both images, nothing seems been different but when trying preview images on QGIS with same band settings value, the image seems to be altered.
Command use for that :...
- 1
3
votes
3
answers
503
views
How to load Esri 10m land cover data in QGIS
Esri just released a global 10m land cover file. It is being served as an image server here
https://tiledimageservices.arcgis.com/P3ePLMYs2RVChkJx/arcgis/rest/services/Esri_2020_Land_Cover_V2/...
- 1,385
1
vote
0
answers
85
views
QGIS Server Not Rendering VRT Layer that is accessing COGS on S3
I have deployed a QGIS server following steps in the user manual on an AWS EC-2 instance. https://docs.qgis.org/3.16/en/docs/server_manual/containerized_deployment.html#docker-stacks
I am serving ...
- 1,385
0
votes
0
answers
91
views
Saving COG with NaN values using Python and GDAL
I have a numpy array (data) with some NaN values which I would like to save as a COG using GDAL. I am saving it first to GDAL memory layer and then to COG and I tired using both CreateCopyand ...
- 1
2
votes
0
answers
74
views
Create cloud optimized GeoTIFF without re-encoding?
I have a lot of jpeg-in-geotiff imagery that I would like to convert to Cloud Optimized GeoTIFF. Is there any way to do that without re-encoding the pixel values?
I'm trying to avoid paying the price ...
- 27.5k
1
vote
0
answers
162
views
GDAL/rasterio multiple windowed reads in one I/O call
I have a cloud optimized geotiff that I need to read multiple small windows from. My current implementation opens the geotiff using rasterio and then performs the windowed reads iteratively. However, ...
- 11
2
votes
0
answers
648
views
COG Driver not recognized in GDAL 3.2.0
I want to generate a Cloud Optimized Geotiff (COG) using Python (with Anaconda environment). I wanted to use GDAL 3.2.0 since it has a COG Built in Driver since 3.1. Initially I cannot update GDAL to ...
- 430
2
votes
4
answers
590
views
Loading Cloud Optimized GeoTIFF in ArcGIS Pro
Esri claim to support Cloud Optimized GeoTIFF (COG) this, but I can't find anything on the Esri site or elsewhere about how you actually do this.
My approach to date in QGIS has been Route 1 - add ...
- 6,392