[gdal-dev] (ReadBlock vs. RasterIO) in python

[Lucena, Ivan]

Frank, all,

Since we are all talking about speed this days I have some questions.

I am experimenting several alternatives of raster data storage and I am 
measuring the processing time that it takes to access the data.

In one experiment I have 1200 1000x500 bands and I am measuring the time 
to extract a small windows of values thought all the bands on different 
data storage options:

o BIL, untiled
o BIL, tiled
o BSQ, untiled
o BSQ, tiled

I am using Python's ReadAsArray in order to easily show the output but I 
am wondering how does it (python and ReadasArray) affects my results.

Primarily I am using BigTiff files.

Any suggestion is welcome.

Best regards,

Ivan