[gdal-dev] GDAL Tiling

[akshay gupta]

I am presently using -srcwin for copying AOI to a different file. does
-projwin have any advantage over -srcwin?

Akhy

On Wed, Mar 28, 2012 at 5:29 PM, Jay L. <jzl5325 at psu.edu> wrote:

> Akshay,
>
> 1) An AOI can be created using the -projwin option in gdal_translate.  You
> can use that option when creating a new raster with a new tiles size.
>
> 2) Using the Python bindings it is possible to read a segment of a raster
> into memory without allocating memory.  I am unsure using another other
> language.
>
> Jay
>
>
> On Wed, Mar 28, 2012 at 5:16 AM, Mateusz Loskot <mateusz at loskot.net>wrote:
>
>> On 28 March 2012 07:45, akshay gupta <akshaygupta202 at gmail.com> wrote:
>> > 2) When I read an image through ReadBlock() i had to allocate some
>> memory
>> > and pass it in the function. Is there some way that i get the image data
>> > stored in GDALRasterBlock directly without passing my own allocated
>> memory.
>>
>> http://www.gdal.org/classGDALRasterBlock.html#_details
>>
>> "In normal situations applications do not interact directly
>> with the GDALRasterBlock - instead it it utilized
>> by the RasterIO() interfaces to implement caching"
>>
>> Best regards,
>> --
>> Mateusz Loskot, http://mateusz.loskot.net
>>
>
>
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