[Gvsig_english] Problem loading big raster file.

[Benjamin Ducke]

Hi Nacho,

could you clarify exactly what this tool does?
I am unclear what is meant by "overviews". A tile is not
an overview and why would they need to be resampled?

Thanks,

Ben

On 03/03/2010 09:25 AM, Nacho wrote:
> Hi Wolfgang,
> gvSIG can build tiles with the option Raster Layer/Overviews. You can
> choose the number of overviews, ratio and resampling method with the
> preferences dialog. Depending on the format the process will rewrite the
> image, be careful.
> 
> Regards,
> Nacho
> 
> El mar, 02-03-2010 a las 08:31 -0800, Wolfgang Qual escribió:
>> Hi Luis, Jukka, list,
>> tiled tiff works well. Only some little modifications for the gdal_translate
>> command:
>>
>> gdal_translate -co "TILED=YES" original.tif tiled.tif
>>
>> This creates a new GTiff which is approx 1.5 times bigger than the original.
>> But gvSIG renders the image very fast. However, creating ecw is not possible
>> (with my gdal installation).
>> Thank you very much for your help
>>
> 
> 
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-- 
Benjamin Ducke
Geospatial Consultant

Oxford Archaeology Digital
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Tel: +44 (0)1865 263 800 (switchboard)
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benjamin.ducke at oadigital.net
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----- Original Message -----
From: "Nacho" <ibrodin at prodevelop.es>
To: "Users and Developers mailing list" <gvsig_internacional at listserv.gva.es>
Sent: Wednesday, March 3, 2010 9:25:05 AM GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna
Subject: Re: [Gvsig_english] Problem loading big raster file.

Hi Wolfgang,
gvSIG can build tiles with the option Raster Layer/Overviews. You can
choose the number of overviews, ratio and resampling method with the
preferences dialog. Depending on the format the process will rewrite the
image, be careful.

Regards,
Nacho  

El mar, 02-03-2010 a las 08:31 -0800, Wolfgang Qual escribió:
> Hi Luis, Jukka, list,
> tiled tiff works well. Only some little modifications for the gdal_translate
> command:
> 
> gdal_translate -co "TILED=YES" original.tif tiled.tif 
> 
> This creates a new GTiff which is approx 1.5 times bigger than the original.
> But gvSIG renders the image very fast. However, creating ecw is not possible
> (with my gdal installation). 
> Thank you very much for your help
> 


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