[GRASS-user] RE:How to find shortest distances from the investigation point to the shoreline

[SGW00412 at nifty.com]

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
-----
SGW00412 at 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 <hamish_b at 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
> > 
> > 
> > 
> >