Hi list,
I am digitizing a map and I have some issues due to the lack of a "join" operation in v.digit module. Since I have to start a new line everytime I use the "pan" function, I use v.build.polylines to joine them afterwards. Trouble is, that the new vector map generated from v.build.polylines does not preserve the table structure (the "height" column that I add to to the original vector map).
Any workaround?
Thanks
Kostas Theofilis
Am Montag, 13. Juni 2005 01:07 schrieb Konstantinos Theofilis:
Hi list,
I am digitizing a map and I have some issues due to the lack of a
"join" operation in v.digit module. Since I have to start a new line
everytime I use the "pan" function, I use v.build.polylines to joine
them afterwards. Trouble is, that the new vector map generated from
v.build.polylines does not preserve the table structure (the "height"
column that I add to to the original vector map).Any workaround?
Hi,
you could use Quantum GIS to digitize within the GRASS database, AFAIK it
allows what you are looking for.
BTW: There already exists a wish list for v.digit in the bugtracker (03/2005)
http://intevation.de/rt/webrt?serial_num=3090&display=History
1) Visualization of snapping radius.
2) Snapping to lines
3) Snap to vetices and nodes.
4) virtually snapping to a background map.
maybe you can add your wish as well,
but it seems that the development prefers QGIS as digitizing tool.
Otto
Thanks for the feedback.
QGIS seems a very nice solution but I cant get it to work with GRASS. Any feedback from OS X users would be greatly appreciated
I downloaded QGIS for mac os x and I followerd the instructions int he ReadMe file for activating GRASS support. But when I start QGIS (from within Terminal) I get
dyld: Symbol not found: __cg_jpeg_resync_to_restart
Referenced from: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/ImageIO
Expected in: /usr/local/grasslib/lib/libJPEG.dylib
Trace/BPT trap
[skulls-ibook-g4:~] skull% /Applications/qgis.app/Contents/MacOS/qgis
dyld: Symbol not found: __cg_jpeg_resync_to_restart
Referenced from: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/ImageIO
Expected in: /usr/local/grasslib/lib/libJPEG.dylib
I have the binaries of Lorenzo installed
Then jpeg lib that I have in /usr/local/grasslib/lib is libjpeg.dylib (not capital letters)
Any feedback from OS X users would be greatly appreciated
Kostas Theofilis
On 13 Jun 2005, at 09:17, Otto Dassau wrote:
Am Montag, 13. Juni 2005 01:07 schrieb Konstantinos Theofilis:
Hi list,
I am digitizing a map and I have some issues due to the lack of a
"join" operation in v.digit module. Since I have to start a new line
everytime I use the "pan" function, I use v.build.polylines to joine
them afterwards. Trouble is, that the new vector map generated from
v.build.polylines does not preserve the table structure (the "height"
column that I add to to the original vector map).Any workaround?
Hi,
you could use Quantum GIS to digitize within the GRASS database, AFAIK it
allows what you are looking for.BTW: There already exists a wish list for v.digit in the bugtracker (03/2005)
http://intevation.de/rt/webrt?serial_num=3090&display=History1) Visualization of snapping radius.
2) Snapping to lines
3) Snap to vetices and nodes.
4) virtually snapping to a background map.maybe you can add your wish as well,
but it seems that the development prefers QGIS as digitizing tool.Otto
There are not enough developers to do this currently. This is one reason
that QGIS is suggested. For those who are able to compile it, it has pretty
good digitizing tools.
However, if someone could "adopt" v.digit, it could be considerably improved
I'm sure. I did a little cosmetic improvement, but don't have the
C-programming skills to implement the wishes. I'm sure that someone out
there does. It just takes a volunteer.
Michael
On 6/13/05 10:17 AM, "Otto Dassau" <dassau@gdf-hannover.de> wrote:
Am Montag, 13. Juni 2005 01:07 schrieb Konstantinos Theofilis:
Hi list,
I am digitizing a map and I have some issues due to the lack of a
"join" operation in v.digit module. Since I have to start a new line
everytime I use the "pan" function, I use v.build.polylines to joine
them afterwards. Trouble is, that the new vector map generated from
v.build.polylines does not preserve the table structure (the "height"
column that I add to to the original vector map).Any workaround?
Hi,
you could use Quantum GIS to digitize within the GRASS database, AFAIK it
allows what you are looking for.BTW: There already exists a wish list for v.digit in the bugtracker (03/2005)
http://intevation.de/rt/webrt?serial_num=3090&display=History1) Visualization of snapping radius.
2) Snapping to lines
3) Snap to vetices and nodes.
4) virtually snapping to a background map.maybe you can add your wish as well,
but it seems that the development prefers QGIS as digitizing tool.Otto
____________________
C. Michael Barton, Professor of Anthropology
School of Human Evolution and Social Change
PO Box 872402
Arizona State University
Tempe, AZ 85287-2402
USA
Phone: 480-965-6262
Fax: 480-965-7671
www: <www.public.asu.edu/~cmbarton>