All Questions
7
questions
1
vote
1
answer
32
views
Gdalwarp assigning zero values outside input raster extents
I'm attempting to combine several GeoTIFF files into a single mosaic raster using gdalwarp:
import os
os.environ['AWS_NO_SIGN_REQUEST'] = 'YES'
file1 = "https://dea-public-data-dev.s3-ap-...
1
vote
0
answers
222
views
Mosaicking raster tiles with different color palettes
I want to create a mosaic of 35 rasters using gdal.
Using
gdalwarp --config GDAL_CACHEMAX 8000 -wm 8000 *.tif abk.tif
I get a fairly small output file. But I've noticed that some colours are off.
It ...
- 157
2
votes
1
answer
6k
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 ...
- 141
0
votes
1
answer
2k
views
Using gdalwarp to merge bands into a mosaic created by gdal_merge?
I have created a mosaic with gdal_merge.py using the following command:
gdal_merge.py -createonly -separate -co PHOTOMETRIC=RGB -o merged.tif LE07_L1TP_046030_20180810_20180810_01_RT_b3.tif ...
- 107
1
vote
1
answer
388
views
gdalwarp's minimum resampling has no effect (possible bug)?
I'm attempting to use the minimum operator with gdalwarp v2.1.0 but it always mosaics as if I had selected nearest neighbor.
From the docs:
-r resampling_method:
min: minimum resampling, selects ...
- 5,103
3
votes
0
answers
683
views
How to do color correction when mosaicing and clipping with gdalwarp
I'm mosaicing a number of GeoTiffs with gdalwarp and clipping to a geojson area of interest using the following command:
gdalwarp -of GTiff -cutline <PATH_TO_GEOJSON> -crop_to_cutline -...
- 159
3
votes
1
answer
829
views
How to blend edges of aerial imagery with gdalwarp
I need to fade/blend the edges of a series of aerial images with gdal. The closest thing that I've been able to accomplish is using the -cutline and -cblend switches of gdalwarp to get the edges to ...
- 481