Dear Grass experts,
I am a biomedical engineer working in the field of cardio-respiratory
physiology. We have reconstructed 3D images of the human diaphragm in
ascii format, i.e. a list with (x,y,z) coordinates. The data are very
irregularly spaced due to the nature of the CT scanning technique and
the existence of "holes" in the diaphragm. I have read the Grass
Beginner's manual but did not find a vlear answer to the following
questions (I acknowledge my complete ignorance of your subject) :
1. How can I import ascii files with 3D coordinates into grass?
2. Can grass calculate the principal curvatures in any point of my
surface?
Thanking you very much for your kind help, I remain
Sincerely yours,
--
*****************************************
Yves Verbandt
Université Libre de Bruxelles
Biomedical Physics Laboratory
cp. 613/3, Route de Lennik 808,
1070 Bruxelles, BELGIUM
tel. +-322-555.61.63
fax. +-322-555.61.62
email. yverband@ulb.ac.be
web. http://www.lpbm.ulb.ac.be
****************************************
Dear Yves Verbandt,
Yves Verbandt wrote:
Dear Grass experts,
I am a biomedical engineer working in the field of cardio-respiratory
physiology. We have reconstructed 3D images of the human diaphragm in
ascii format, i.e. a list with (x,y,z) coordinates. The data are very
irregularly spaced due to the nature of the CT scanning technique and
the existence of "holes" in the diaphragm. I have read the Grass
Beginner's manual but did not find a vlear answer to the following
questions (I acknowledge my complete ignorance of your subject) :
1. How can I import ascii files with 3D coordinates into grass?
2. Can grass calculate the principal curvatures in any point of my
surface?
GRASS may be not suitable for your purpose.
GRASS has capability of 3-D modelling but it is
,more concrete, suitable for terrain.
For you problem it is a kind of solid modelling which
related to CAD.
There are so m*a*n*y packages that does solid
modelling and available freely in internet.
If u r blank then go www.opengl.org
www.mesa3d.org for start.
Rgds,
--
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