[mapserver-users] Raster Data

[Rahkonen Jukka (Tike)]

Hi,

Standard recipe is to use tiled tiff file with overviews, perhaps both compressed.
 
Uncompressed:
gdal_translate -of GTiff -co tiled=yes -co bigtiff=yes image.png image.tif
gdaladdo -r average image.tif 2 4 8 16 32 64 128 256

You may want to save space by making a compressed tiff. If it is aerial image, use jpeg compression, if a map, then LZW or deflate. For aerials it would look about like

gdal_translate -of GTiff  -co COMPRESS=JPEG -co PHOTOMETRIC=YCBCR -co TILED=YES image.png image.tif
gdaladdo -r average  --config COMPRESS_OVERVIEW JPEG --config PHOTOMETRIC_OVERVIEW YCBCR 2 4 8 16 32 64 128 256

-Jukka Rahkonen-

jcwalz wrote:

> Hello,
> 
> I have a png raster image that I am adding to GeoMOOSE and it is about 3GB in
> size. It takes about 10 minutes for the image to show up because the file is so
> large. What is the best way of dealing with large images like this?
> 
> Thanks,
> 
> Jenna
> 
> 
> 
> --
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