distorted image

GRASS GRASS user
1

Hi All,

I have an image in .ras format. I imported within grass with
r.in.sunrast. Then I ran r.support and fixed the coordinates. But if I
try to see it I get always a distorted image. I've tried to manage the
number of cols and rows, change the resolution and every imaginable
procedure, but there is no way. What I'm doing wrong?

Antonio

Antonio Rodríguez Verdugo

Paraje Natural Marismas del Odiel
Centro de Calatilla
Huelva, Spain
rod.chav@hsoft.es

2

Dear Antonio,

Antonio Rodríguez Verdugo wrote:

Hi All,

I have an image in .ras format. I imported within grass with
r.in.sunrast. Then I ran r.support and fixed the coordinates. But if I
try to see it I get always a distorted image. I've tried to manage the
number of cols and rows, change the resolution and every imaginable
procedure, but there is no way. What I'm doing wrong?

Antonio

let's try i.point and register all four corner points.
then use i.rectify2 with degree equals to 1
then see what will happen.

Rgdds,
--
Phisan Santitamnont, Dr.-Ing.
Survey Engineering Department
Chulalongkorn University
Pathumwan Rd, Bangkok 10330
Tel. +66 (2) 218 66 61
Fax. +66 (2) 218 66 53
mailto:fsvpss@eng.chula.ac.th
http://www.sv.eng.chula.ac.th/Staff/Phisan

3

Antonio,

Use i.rectify and i.points to rectify your image. You may also want to
check the
resolution of your data with g.region as well.

Bruce

--
Bruce Byars
GRASS Dev. Team
CAGSR - Baylor Univ.

Antonio Rodríguez Verdugo wrote:

Hi All,

I have an image in .ras format. I imported within grass with
r.in.sunrast. Then I ran r.support and fixed the coordinates. But if I
try to see it I get always a distorted image. I've tried to manage the
number of cols and rows, change the resolution and every imaginable
procedure, but there is no way. What I'm doing wrong?

Antonio

Antonio Rodríguez Verdugo

Paraje Natural Marismas del Odiel
Centro de Calatilla
Huelva, Spain
rod.chav@hsoft.es