[Gdal-dev] Imagine overviews option

[Chapman, Martin]

Frank,

I don't care about specific datasets using different overview formats.
So, if I understand correctly, I can use the CPLSetConfigOption()
function to swap between pyramid formats?  If that works, then that
would suit my needs.  Is that correct?  Is there any documentation on
how to use the rrd format on the gdal website?

Martin

-----Original Message-----
From: fwarmerdam at gmail.com [mailto:fwarmerdam at gmail.com] On Behalf Of
Frank Warmerdam
Sent: Friday, September 16, 2005 10:24 AM
To: Chapman, Martin
Cc: gdal-dev at lists.maptools.org
Subject: Re: [Gdal-dev] Imagine overviews option


On 9/16/05, Chapman, Martin <MChapman at sanz.com> wrote:
> Frank,
> 
> Can you add a new method that lets you specify the overview format 
> type (like void SetPyramidFormat(int nFormatTypeId); or something)?  
> That would be really handy. :)

Martin,

I gather you are suggesting this be a method on the GDALDataset?  
I am pretty hesitant to add new virtual methods on the GDALDataset
unless I think they are really important to the data / access model. 

The CPLSetConfigOption() provides a mechanism to control it, but not in
a dataset specific manner.  Were you wanting to be able to request
particular datasets to use one kind of overviews, and particular others
to use a different kind of overviews?  

I think I might be better off extending the BuildOverview method to 
include an options list.  

Best regards,
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