All Questions
12
questions
0
votes
1
answer
39
views
Stripes in map are missing after gdalwarp and gdalbuildvrt
I have a problem with some GeoTIFF:s that are in EPSG:3006 and I need them in EPSG:3857. The problem is that after gdalwarp, and gdalbuildvrt I get transparent stripes in the vrt map
This is one of ...
- 175
1
vote
0
answers
55
views
Creating Orthomosaic with GDAL
Platform: Windows 11
1. Aim trying to achieve: I have some very high quality multispectral data (drone multispectral imagery), from which I am trying to create an orthomosaic. My multispectral data ...
- 11
1
vote
0
answers
52
views
Cropping VRT with Shapefile to create new VRT with no dependecy from input
I'm new to work with gdal and I'm trying to crop a VRT-File with a shapefile to create a new VRT-File that is independent from the input.
I use gdalbuildvrt [...] to create the base VRT-File from ...
- 11
1
vote
0
answers
32
views
Tile GeoTIFF images in locations far from each other in one layer
How to tile two aerial TIFF images from two cities in one layer?
I understand that first, I should create a virtual layer (vrt) and then tile it after reprojection. However, gdal2tile creates too many ...
- 43
3
votes
1
answer
670
views
Tile a large VRT with different resolutions
I have a large raster GeoTIFF of the whole world with a low resolution, and also parts of the world with higher resolutions. Some very high, some medium high resolution.
Now I would like to create new ...
- 1,001
1
vote
0
answers
205
views
Why does this HDF4 file converted to .tif with gdal come out at a coarser resolution?
I'm currently working with large-domain MODIS data. These come in multiple separate HDF4 files which I stitch together into a virtual data set (VRT), reproject into EPSG:4326, sub-set to the domain of ...
0
votes
0
answers
160
views
Select first valid datasource in VRT
When reading data from a VRT, gdal appears to interpolate values from all available rasters. Is there a way to configure the VRT in such a way that it selects the first valid raster in the dataset, or ...
- 31
2
votes
1
answer
213
views
sampling error using gdalwarp on a subsetted VRT?
I am currently trying to prepare an SRTM subset including height conversion from EGM96 to WGS84 using gdalwarp. I encountered some strange shifts in part of the image.
Here is a reproducible example:
...
4
votes
3
answers
4k
views
How to fix positive North-South Pixel size in GeoTIFF with GDAL
I have issues with some GeoTIFF raster files with positive NS resolution (North-South)
gdalinfo gave me this:
Pixel Size = (1.000000000000000,1.000000000000000)
I run into all kind of problem with ...
- 715
13
votes
2
answers
2k
views
Can I preserve a fading alpha layer when mosaicing images with gdal?
I am mosaicing some images with gdal and would like to improve the final result by using a fading / gradual alpha layer towards the edge of each image to remove the sharp edges in the middle of the ...
- 614
1
vote
0
answers
53
views
Problem defining the tiling starting point
We are tiling a image datasets. However, we want to specifically define custom windows. To do this, we are using -te option during warping. The warped output is then tiled. The problem though is that ...
- 125
1
vote
1
answer
2k
views
How do I set nodata with custom color for gdal_translate and gdal2tilespy?
I start with a bunch of 1-bit geotiff files that I had to convert to 8-bit RGB tiff files to use with GDAL. Then I tried to set borders to red (content is in black and white so I can't use those) and ...
- 111