Details Ticket 1431


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Serial Number 1431
Subject [RFE] r.digit support for vector point digitization please?
Area wish
Queue grass
Requestors ihatejunkyabastards@yahoo.com
Owner none
Status resolved
Last User Contact Never contacted
Current Priority 20
Final Priority 70
Due No date assigned
Last Action Fri Oct 22 07:05:06 2004 (4 yr ago)
Created Mon Nov 18 06:57:16 2002 (6 yr ago)

Transaction History Ticket 1431


Mon, Nov 18 2002 06:57:16    Request created by guest  
Subject: [RFE] r.digit support for vector point digitization please?

Platform: GNU/Linux/i386
grass obtained from: Mirror of Trento site
grass binary for platform: Compiled from Sources
GRASS Version: 5.0.0

It would be nice if the ability to digitize vector point data were added to r.digit.
It may better belong to v.digit, but r.digit seems to already be very close to
the functionality I desire. Here's a description of my current workaround to
give you an idea of why it is needed:


Digitizing of spot heights/depths off of a raster map (imported TIFF):
(There may well be a much better way of doing this)
After r.in.tiff, i.group, i.target, i.point, and i.rectify to get the
scanned-in map registered correctly, I tried using v.digit with 'Backdrop
CELL Map' turned on. (I assume this is the 'correct' method)

It worked, but the process of digitizing a couple of points, quiting to
the label menu, entering a new category and unique attribute label, then
selecting the relevant point on the map, then zoom to a new section, and
repeat, is tremendously inefficient when you are trying to put in several
hundered points. 

Being able to click on a point, then be prompted for a label, <enter>
repeat, with category numbers auto-incrementing in the background would be
much nicer, which led me to do it the way I did it:

Use i.points to select positions, enter the spot height and a zero when
prompted for an easting and northing, and repeat. After that's all done,
save the resulting table to a file, edit the file to remove the uneeded
columns and header, and s.in.ascii the results.
Worked quite well, but it seems a tad bit round-about.



thanks,
ihatejunkyabastards@yahoo.com
Fri, Oct 22 2004 07:05:06    Status changed to resolved by hbowman  
Fri, Oct 22 2004 07:05:06    Comments added by hbowman  
The new v.digit in 5.7 does this pretty well.
request withdrawn.


Hamish
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