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Results tagged with gdal
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user 9628
GDAL (Geospatial Data Abstraction Library) is an open source translator library for raster and vector geospatial data formats.
9
votes
1
answer
10k
views
Rasterio - save multiband raster to TIFF file
I was trying to get Rasterio to save a 3 band raster to a TIFF file. For some reason, the example in the documentation only shows how to save raster with only 1 band. Now when I tried to save a 3 band …
- 929
1
vote
1
answer
435
views
Is there a command line tool like `gdalinfo` for vector files?
I use gdalinfo all the time to obtain basic information about raster files. I was wondering if there was a similar tool to obtain information from vector files, such as the spatial projection, list of …
- 929
1
vote
1
answer
3k
views
Rasterio resampling image to lower resolution error: 'float' object cannot be interpreted as...
I am trying to downsample a raster image to a lower resolution using rasterio. I am running into an error about 'float' object cannot be interpreted as an integer and I can't seem to figure out the ca …
- 929
6
votes
1
answer
10k
views
Can Gdal.Translate() return an object instead of writing a file?
I have some Python GDAL code I am using to convert a GeoTIFF file to PNG. The code uses the gdal.Translate() function which generates a new file each time I run it. … Here is some sample code I am using:
from osgeo import gdal
scale = '-scale min_val max_val'
options_list = [
'-ot Byte',
'-of JPEG',
scale
]
options_string = " ".join(options_list)
gdal.Translate …
- 929
0
votes
0
answers
711
views
Why doesn't installing GDAL from `pip` work on Ubuntu 18.04x64
Here are other folks who have had similar issues installing gdal.
Python GDAL package missing header file when installing via pip
How to (re)install gdal in python3 (mac)? … https://stackoverflow.com/questions/43587960/gdal-installation-error-using-pip
Installing GDAL and OGR for Python? …
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0
votes
0
answers
2k
views
Converting a GeoTIFF image from RGB to gray scale using Rasterio or GDAL in Python
If there is a convenience function in rasterio or GDAL for this, could someone point it out. I searched but could not find anything. Otherwise I can try to work on creating a windowed read. …
- 929
0
votes
0
answers
426
views
Writing dirty block from GDALRasterBand::IRasterIO` even with `LibTiff` > 4.0 on Windows and...
I am using rasterio 1.1.7, and Gdal 3.1.2, and LibTiff 4.1.0. The code I am using for compression is below, and the error message is below as well. …
- 929
1
vote
1
answer
482
views
Invalid geometry error after polygonizing a GeoTIFF file
Any suggestions about how to either correct the original GDAL code to make valid geometries, or how to fix the subsequently generated polygons? …
- 929
1
vote
0
answers
610
views
Mathematical rule to convert between degrees and centimeters based upon projection
In terms of tools, I was using rasterio and GDAL in python. I would like to do this through code instead of through a tool like QGIS. …
- 929
5
votes
2
answers
4k
views
create polygon adjacency matrix using python
I am trying to create an adjacency matrix from a set of polygons. That is, I have a bunch of polygons and I want to identify which polygons have a common edge or "touch" each other. Once I find this i …
- 929
5
votes
1
answer
960
views
Seeking code behind Fix Geometries tool in QGIS
I also looked in the Log window of the Fix Geometries tool, but it did not seem to show the GDAL code or such, as in other tools. …
- 929
2
votes
1
answer
6k
views
Read and then write rasterio GeoTIFF file without loading all data into memory
I work with large drone image raster files, on the order of 40,000 x 40,000 and above. I have a large uncompressed GeoTIFF file and I want to use rasterio to rewrite the file in compressed format. I c …
- 929