v.digit, xdigit, mouse digitizer

[Malcolm Williamson]

On Sat, 2 Nov 1996 andreas at gphsrv1.geophyS2.uni-bremen.de wrote:

> Hi everybody,
> 
> I am introducing myself here as a newbie to grass
> (and to GIS in general). We have grass4.1.5 running
> under LINUX (the Andreas Holz CD transferred to disk).
> 
> Trying to crate an ad-hoc mask for gridding (sorry, 
> "rasterizing") site-values I could not figure how
> to work the "mouse-digitizer"
> 
> No matter how may points I "digitized" either
> with "v.digit" or "xdigit" and no matter what
> mouse buttons I pressed, I got the answer:
> "only one point digitized - ignoring".
> 
What this means is that you are trying to digitize points that are closer 
together than your digitizing threshold. Go to the Customize menu and 
make your digitizing threshold and snapping threshold smaller. Note that 
these are scale-dependent, so the scale that you specify in the 
introductory screen is _very_ crucial to digitizing operations. Hope that 
fixes you up!
--
Malcolm D. Williamson - GIS Specialist           E-mail: malcolm at cast.uark.edu
Center for Advanced Spatial Technologies      Telephone: (501) 575-6159
Ozark Rm. 12                                        Fax: (501) 575-5218 
University of Arkansas              
Fayetteville, AR 72701



> Quite a frustrating experience. The mouse
> works fine in all other cases and as I can't make
> any sense out of the documetation in "digit.ps" nor
> the man pages, I'm asking for help.
> 
> What's wrong here ??
> 
> Thanks, Andreas
> 
> Dept. of Geophysics
> University of Bremen, FB5
> 
> 
>