[gdal-dev] Tiled geotiffs and blocksize

Chaitanya kumar CH chaitanya.ch at gmail.com
Tue Feb 16 05:35:38 EST 2010


Raspaud,

Try the options with no space before and after the '=' sign.

On Tue, Feb 16, 2010 at 2:57 PM, Raspaud Martin <martin.raspaud at smhi.se>wrote:

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> Hash: SHA1
>
> Hi all,
>
> I’m trying to save geotiff rasters as tiled with custom blocksize. I'm
> using the
> python interface for this.
>
> Hence I use the following options:
> options = ["TILED = YES", "BLOCKXSIZE = 128", "BLOCKYSIZE = 128"]
>
> that I then pass on to the raster creation:
> dst_ds = raster.Create( filename,
>                         self.width,
>                         self.height,
>                         3,
>                         gdal.GDT_Byte,
>                         options)
>
> The code does not create any error and a readable tif is generated.
> However, I cannot see using tiffdump or tiffinfo any information on the
> tiling:
>
> TIFF Directory at offset 0x6fdf5a (7331674)
>   Image Width: 2560 Image Length: 2048
>   Bits/Sample: 8
>   Sample Format: unsigned integer
>   Compression Scheme: AdobeDeflate
>   Photometric Interpretation: RGB color
>   Samples/Pixel: 3
>   Rows/Strip: 1
>   Planar Configuration: single image plane
>   DateTime: 2010:02:15 07:30:00
>   Tag 33550: 3000.000000,3000.000000,0.000000
>   Tag 33922:
> 0.000000,0.000000,0.000000,-3780000.000000,-1500000.000000,0.000000
>   Tag 34735:
> 1,1,0,5,1024,0,1,2,1025,0,1,1,2048,0,1,4326,2049,34737,7,0,2054,0,1,9102
>   Tag 34737: WGS 84|
>
> Hence my questions:
> - - How do I check that the resulting tif image is tiled ?
> - - Do I need to specify TIFFTAG_TILELENGTH and TIFFTAG_TILEWIDTH ?
>
>
> Thanks !
> Martin
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-- 
Best regards,
Chaitanya kumar CH.
/tʃaɪθənjə/ /kʊmɑr/
+91-9848167848
17.241582N 80.142635E
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