Tiling and Image

[Kevin Flanders]

Can gdal_translate be used in conjunction with a tileindex shapefile to
create tiles?

Can gdal_translate be used to cut out a portion of an image and translate it
at the same time?



Kevin





-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]On
Behalf Of Ryan Ollerenshaw
Sent: Thursday, August 17, 2006 2:23 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] Tiling and Image


Ryan Ollerenshaw wrote:
> I have a large global dataset that i would like to break into smaller
> tiles (individual files, not internal tiles).  I know this can be done
> with imagemagick but that rout seems rather complicated, isnt there
> some gdal utility out there that i can use.
>
Sorry for yet another repost, solution:

## Create internal tiles
gdal_translate -co TILED=YES old.tif new_tiled.tif

## cut out a chunk of an image, assigning appropriate georeferencing
## as always gdal uses top left and lower right corners of the image
gdal_translate -srcwin 0 0 2000 2000 in.tif out_0_0.tif
gdal_translate -srcwin 2000 0 2000 2000 in.tif out_1_0.tif
...
...