> > The s3-geotiff module is not doing range reads, it can read any tiff, even > > non cog, and does read blocks of 5MB caching them on disk. > > > > Full COG support is built into the gt-geotiff module... But has currently > > no caching and requires COG layout. You should find an example of usage > > among the tests. > > oh, I see, thank you so much. Will check that out.
I am not sure what you mean by COG layout. I couldn't find any reference in the testcases or source code. I am assuming it should be set inside the GeneralParameters part? Right now using "standard" general parameters I again get the coverage of the complete tiff instead of a range of it. Even if setting the source SPI provider to (as seen in the test): String url = "https://minio.myinstance.org/cogs/eu_dem_v22_itnord4326_cog512.tif";; BasicAuthURI cogUri = new BasicAuthURI(url, false); HttpRangeReader rangeReader = new HttpRangeReader(cogUri.getUri(), CogImageReadParam.DEFAULT_HEADER_LENGTH); CogSourceSPIProvider input = new CogSourceSPIProvider(cogUri, new CogImageReaderSpi(), new CogImageInputStreamSpi(), rangeReader.getClass().getName()); Do you happen to have an example that uses COG layout? Thanks a lot, Andrea > > Il Mar 6 Set 2022, 09:46 andrea antonello <andrea.antone...@gmail.com> ha > > scritto: > >> > >> Hello, > >> I wanted to test the s3 geotiff module to read cogs from a minio instance. > >> > >> It was actually quite simple to set up, but I have not been able to do > >> range requests. > >> The whole image seems to be read every time instead. > >> > >> Can anyone with experience tell me what I might be doing wrong? > >> > >> My super simple code is this: > >> > >> System.setProperty("s3.properties.location", "/path/to/s3.properties"); > >> S3GeoTiffReader reader = new S3GeoTiffReader(new > >> S3ImageInputStreamImpl("main://cogs/eu_dem_v22_itnord4326_cog512.tif")); > >> GeneralParameterValue[] generalParameter = // omitting the creation of > >> GP using the bounds values and resolution > >> GridCoverage2D coverage2D = reader.read(generalParameter); > >> > >> Is the use of generalParameter the right way to address this? > >> > >> Thanks for any hint, > >> Andrea > >> > >> > >> _______________________________________________ > >> GeoTools-GT2-Users mailing list > >> GeoTools-GT2-Users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users _______________________________________________ GeoTools-GT2-Users mailing list GeoTools-GT2-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
