"Mateusz Loskot" <mateusz@loskot.net> wrote in message news:4D00DA5D.3040400@loskot.net...
1. Which raster are we taking from the True Marble Imagery?
The largest one ( TrueMarble.250m. 21600x21600.E2.tif.gz 628MB) ?
2. To keep things simpler, let's cut the raster to even tiles. For example, tiles of 200x200 pixels This will give us constant number of 11664 tiles for 21600x21600 raster.
OK.
3. No form of parallelism of the cutting procedure is assumed, right?
Right.
4. Cutting TIFF to PNG involves compression. If we are interested in raster access, RIO, I/O speed, perhaps we could stick to TIFF as output format as well. What you think?
That depends on what exactly are we trying to test here, the C++ wrappers (e.g. io_new vs io2) and/or the backends (e.g. LibTIFF vs WIC) and/or something third... Are you sure the TrueMarble GeoTIFFs are uncompressed? -- "What Huxley teaches is that in the age of advanced technology, spiritual devastation is more likely to come from an enemy with a smiling face than from one whose countenance exudes suspicion and hate." Neil Postman