[gdal-dev] Global min/max

[Pierre Chatelier]

I have found the GetStatistics 
<https://gdal.org/doxygen/classGDALRasterBand.html#a6aa58b6f0a0c17722b9bf763a96ff069>() 
method of GDALRasterBand(), but I did not find any GetStatistics() 
available for the whole dataset at a glance.
While it is pretty obvious that it can be achieved by calling 
GetStatictics() for all bands and gather the results, I am concerned 
about performance.
In my case, I use an ENVI driver with BIL or BIP data interleaving. 
Calling GetStatictics() on bands will induce an overhead of data 
de-interleaving to gather band raw values, but it is a pity since I will 
process all data anyway. I would expect to benefit from memory locality.

Did I miss something ?


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