next steps in routing
Hi, what are your thoughts on what to look at next regarding routing? Considering that my small sample maps now route fine, is it time to go towards bigger routable maps?NOD 1 with multiple RouteCenters, in particular, is something I'd like to give, but I wouldn't want to duplicate work. An issue my small sample still has is that when moving the cursor over a road (on my Vista HCx), the unit rarely pops up the name. If it does, I can also click the road, otherwise it says there's no information about this point. Do you know which part of the IMG is responsible for this? NET? Cheers Robert
Hi On Sun, Nov 30, 2008 at 09:48:09PM +0100, Robert Vollmert wrote:
what are your thoughts on what to look at next regarding routing?
I see crashes in MapSource if there are more than two roads that join a single road. But that may take a long time to track down, so I wouldn't worry about it if you don't see those kinds of problems elsewhere. So the next step is to implement multiple route centers and then routing between maps. A simple three step plan!
Considering that my small sample maps now route fine, is it time to go towards bigger routable maps?NOD 1 with multiple RouteCenters, in particular, is something I'd like to give, but I wouldn't want to duplicate work.
Yes just go ahead, I won't be working on that in the near future.
An issue my small sample still has is that when moving the cursor over a road (on my Vista HCx), the unit rarely pops up the name. If it does, I can also click the road, otherwise it says there's no information about this point. Do you know which part of the IMG is responsible for this? NET?
I think that you always get the name just with the basic three sections. There is a problem with the backing areas - even though they do cover the whole map, they are not always recognised. You only get pop-up when the backing area is in place and recognised. I don't know what the problem is. It could be that there are just too many backing areas. They shouldn't really be split up so much. ..Steve
Hi, On 11/30/08, Robert Vollmert <rvollmert-lists@gmx.net> wrote:
Hi,
what are your thoughts on what to look at next regarding routing?
Considering that my small sample maps now route fine, is it time to go towards bigger routable maps?NOD 1 with multiple RouteCenters, in particular, is something I'd like to give, but I wouldn't want to duplicate work.
Several things on routing. - Blocks are alligned in 4096 bytes. - The bitmap len at the end of road in NET is the count of nodes in the road, for every node there is 1 bit in the bitmap. I've seen bitmaps with holes, not all bits ones. But don't know yet what they mean. The so called extra bit: marks a node in the graph. Road with just one node: | R2 | X----------- where X is in R1 have bmlen=1 and no extra bit. | R1 | Also X is the first point in the line. Road with two nodes: | R2 | | | X----------X | R1 | | | Here R1 have no extra bit too, and a bmlen=2. In both cases they have only one segment in net. Longer roads: seg1, seg2, seg3, seg4, .... in NET that are referencing graphical data in TRE/RGN. seg1 seg2 seg3 seg4 X-------X----------- ----------X----------------X ----------------------- --------X------X In seg1 first point is always a node, so extra bit is not set. in seg2 first is not set too, if there is a node the last point in seg1 is set. Coordinates of last from seg1 and first from seg2 are equal, same for other segXs. So seg1 and seg2 have total of 4 nodes. seg3 have no nodes, seg4 have 2 nodes. So the road have total 6 nodes on 4 segments bmlen=6 and the bitmap 111111. -- have fun, alex
Hi Robert
what are your thoughts on what to look at next regarding routing?
I was a bit rushed yesterday and I've remembered a number of other things that I haven't done. The road length, class and flags are just set to constant values and they will need to be set properly before trying a large routing network. Do you still remember your svn account details? You can just commit stuff to the nod branch. I've moved server recently so they may not work any more. ..Steve
participants (3)
-
Alexander Atanasov -
Robert Vollmert -
Steve Ratcliffe