[GRASSLIST:5367] Re: .lac noaa imagery

[Markus Neteler]

On Thu, Jan 13, 2005 at 03:12:02PM -0300, samuel cavalcante wrote:
> 
> hi all,
> does anyone know if there is anyway to import noaa12
> imagery (.lac format) to use it in grass?
> i tried to use r.in.gdal but it doesn't recognize the
> gcp stored in the .lac file (and after that run
> i.rectify)...

If the .lac format is not recognized properly, this
should be reported to the GDAL people (http://gdal.org).

Concerning i.rectify: It won't work well as using
polynomials to rectify the long AVHRR stripes doesn't
perform well (I got some 25km shifts).

Note that GDAL was extended two weeks ago to support
thin spline warping. Using 'gdalwarp' you should be
now able to rectify the NOAA data *before* importing
them into GRASS. For details see

 http://xserve.flids.com/pipermail/gdal-dev/2004-December/007812.html

This new method was finanzed by VISRT Inc and Centro di Ecologia Alpina
here in Trento.

Hope this clarifies it

 Markus

-- 
Markus Neteler     <neteler itc it>       http://mpa.itc.it
ITC-irst -  Centro per la Ricerca Scientifica e Tecnologica
MPBA - Predictive Models for Biol. & Environ. Data Analysis
Via Sommarive, 18        -       38050 Povo (Trento), Italy