Re: [udig-devel] Geotiff files

[Juho Kokkonen <juho.kokkonen@xxxxxxxxxxx>]

Hi Andrea!

Yes i mean't internal overviews.

Here is gdal commands what i've been use. First i will create translate.

gdal_translate -of Gtiff -co tiled=yes -co compress=lzw -co predictor=2 -outsize 80% 80% abc.tif translated.tif

then i'll use gdaladdo.

gdaladdo -r nearest --config TILED YES translated.tif 2 4 8 16

These two commands has been working well for my previously actions.
I just wondering that is there some kind of limit for internal overviews? i mean is i have small picture and i'll try to do 4 or 5 overview
does it corrupt an image?

- Kokkonen




----- Original Message -----
From: "andrea antonello" <andrea.antonello@xxxxxxxxx>
To: "User-friendly Desktop Internet GIS" <udig-devel@xxxxxxxxxxxxxxxxxxxxx>
Sent: Thursday, March 14, 2013 1:47:10 PM
Subject: Re: [udig-devel] Geotiff files

Hi Juho,

> I have 10 Geotiff files. I have been done tiling and pyramized operations on each file. Then i've done Image Mosaic player (shp) so i can use all Tiffs at same time.

I suppose by pyramid you mena the internal overviews? Did you do that
with gdal?

> When i zoom, udig starts to render Job. When the job is done image wont show, i see only white canvas, after i been waiting 5minutes image comes to visible.
>
> What i've done wrong?

The only thing I can think of is that they are not tiled or
"overviewed" properly, the images take very long to render. Can you
share the command you use, if it is gdal, maybe we can help.

Cheers,
Andrea



>
> - Kokkonen
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