GeoTrellis is a geographic data processing engine for high performance applications.
@pomadchin Hello, the previous problem, with your help, I have solved it.
Now, I have a 20GB geotiff, I want to use a pyramid extent to cut it. If I use the clop method of the raster package of geotrellis, this process will take a lot of time and sometimes cause memory overflow. I noticed that the 3.5 version of geotrellis has gdal support. The help I want to ask you is: Can I cut very large images like 20GB as fast as gdal does.
I did a test and the geotiff data size is 20GB. The given extent is the same in both cases. The clop method of the raster package of geotrellis will take 26 minutes, and gdal will take 3 minutes.
Now, I have a 20GB geotiff, I want to use a pyramid extent to cut it. If I use the clop method of the raster package of geotrellis, this process will take a lot of time and sometimes cause memory overflow. I noticed that the 3.5 version of geotrellis has gdal support. The help I want to ask you is: Can I cut very large images like 20GB as fast as gdal does.
I did a test and the geotiff data size is 20GB. The given extent is the same in both cases. The clop method of the raster package of geotrellis will take 26 minutes, and gdal will take 3 minutes.
thanks!
RasterSource(uri).read(extent) // it will read only the portion of the picture that is covered by the requested extent
😀
Hello, my error situation is the same as his, and then I followed the solution you provided him, here is the combination of mingw and gdal, but the error still exists
The above is a screenshot of the installation and deployment of gdal in mingw
Below is a screenshot of my geotrellis code
Below is a screenshot of the reported error
for help
Where do I need to set up some special environment variables, on a windows10 computer, or in the mingw program?
thanks
This screenshot is the verification result after configuring the gdal environment variable on the windows10 computer
I think you haven’t set the LD_LIBRARY_PATH properly
so that is why your java application can’t find dependent libs
also, what were the results of the GeoTiffRaterSource(uri).read(extent)?
it also should read things smartly without utilizing the entire memory
also, can you share the gdalinfo of tiffs you’re experiencing issues with?
you can remove the geospatial information (extent and crs) and any other possibly sensitive information from the output
Yes, the gt version I am using is 3.5
thanks
Then, in MinGW, do I configure the LD_LIBRARY_PATH environment variable like this?
In MinGW, I use the cd command to enter the gdal3 installation directory, execute the gdalinfo --version command, and the gdal version information will appear
Finally, my requirement is: I want to use gdal in geotrellis in the windows10 local development environment
@pinis123 the last release of gdalwarpbindings is built against http://download.gisinternals.com/sdk/downloads/release-1911-x64-gdal-3-0-4-mapserver-7-4-3-libs.zip
Try exactly this version