Dear all: I solved this problem at last !
Well, I found the method of installing grass6.4 on ubuntu 9.04. http://les-ejk.cz/2009/05/grass-64-rc4-for-ubuntu-904/ I want to say the reward to you. Thank you ! However, I have the relating question... I am also linux- beginner user. #db.select point_data fs="," > result.csv #bash: result.csv: Permission denied Why does this occur? It was not generated in the old version. Yasuo shimada ----- sgw00...@nifty.comさん: > Dear Hamish and Milton: > > Thank you good advice and kind message. > > I intend to install (compile) a new version, 6.3 or more. > > Best > > Yasuo shimada > ------ > Hamish <hamis...@yahoo.com>さん: > > > > sgw00412 wrote: > > > I tested by two kinds of geographical coordinate systems by > > > using the same data. > > > > > > One of the geographical coordinate systems is UTM54, and > > > the remainder is wgs84. > > > > > > data :point vector data (10 points) and a line vector data > > > OS: grass 6.2.3 on Cygwin. > > > > > > As a result, the case of UTM54 obtained the distance of meter. > > > On the other hand, wgs84 obtained the distance of decimal value. > > > > > > So, I guess that the decimal value of wgs84 is a degree of > > > latitude longitude. > > > > > > > > > Grass manual wrote that "...In lat-long locations v.distance gives > > > distances (dist and to_along) in meters not in degrees calculated as > > > geodesic distances on a sphere.." > > > http://www.ces.iisc.ernet.in/grass/grass64/manuals/html64_user/v.distance.html > > > > > > Though this manual is version 6.4, the manual of version > > > 6.2 is not written it. > > > > > > Is this interpretation correct? > > > > > > If it is so, please teach me the method of converting the > > > decimal value into the meter. > > > > > > Yes, version 6.2.3 is giving distances in (useless) degree units. This > > was fixed in Jan 2008 by Martin to use geodesic distance in meters, so > > GRASS 6.3.0 and the upcoming 6.4 do return meters. But 6.2.3 was > > released in Nov 2007 and so is too old to have that fix. > > > > > > Hamish > > > > > > > > _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user