[GRASSLIST:1645] Re: display several maps

[Justin Hickey]

Hi Gail

Gail Higginbottom wrote:
> Thankyou Justin, that is great news. Sounds simpler than I imagined.
> I am about to launch into creating a large map
> made up of 164 separate OS DTM (NTF format) maps, 20km by 20km each.
> However, I am using
> vector data, do you have any knowledge of doing the same thing with 
> vector data? I am going to try v.patch. Having now read the pages for
> patching vectors, do you have any advice that may not have been 
> covered in the Grass webpage that experience may have passed on to
> you?

Yes, you're right, v.patch is the command to use. Actually, I've never
used these commands, but my colleagues did though. However, I would
suggest that you look into the commands suggested in the v.patch manual
page, especially v.mkgrid and v.mkquads since they seem to help with
alignment. Also, you may want to start with a small subset first (maybe
a block of 4 maps - 40x40 area) to see which sequence of commands gives
you the best results.

Hope this helps.

-- 
Sincerely,

Jazzman (a.k.a. Justin Hickey)  e-mail: jhickey at hpcc.nectec.or.th
High Performance Computing Center
National Electronics and Computer Technology Center (NECTEC)
Bangkok, Thailand
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