[Talk-ca] Importing GeoBase Data - Ibycus Topo

Sam Vekemans acrosscanadatrails at gmail.com
Tue Nov 25 21:17:55 GMT 2008


Hi,
It seems i get a delay in the messages for some reason?

Anyway,
It was asked about Ottawa Maps, and the Newmarket area.

Here's what i recommend.
1: Use the Ibycus Topo which coveres these areas in great details. Img
file from http://ibycus.com/ibycustopo/download/imgs/
using the geobase map
http://www.geobase.ca/geobase/en/browse.do?produit=cded&decoupage=50k&map=canada
to find the tile.  (I can make an interactive map where it will
automatcially download the latest Ibycus Topo tile from this map) ..
if anyone wants?

ottawa http://ibycus.com/ibycustopo/download/imgs/10310700.img
newmarket


2. Download the latest Computerteddy IMG file for the area.
http://wiki.openstreetmap.org/wiki/OSM_Map_On_Garmin/Download
(at the bottom it explains how to find the tile)

http://osm.ammit.de/osm/latest/img/63258856.img.gz


3. use both maps on the garmin on top of eachother.
sendmap would work fine. :)

4:  Pretend that all this data has already been imported onto t
the OSM database (render=no)

5:  When using the Ibycus topo on the garming GPS, along with what on
OSM you will see some dublicates.  So here the objective is to now
work on the map, to show the extended detail, which is not on eithor
maps. ... ie. trails/school names/ business, park names. .. stop
lights, things like that.

Answer:  The reason is this.
The Ibycus topo IMG file is created using GPSMapedit, and bringing in
all the free government data.. and placing it on a new map. (not using
OSM) . ... ideally it would be great if those polish format files
where made available AND opensource.. so that anyone can go in there
and edit it, and re-render the map to make an IMG file using
cgpsmapper.  ...
But this is not how OpenStreetMap works. .. the base is a super huge
totally empty 'space' where the roads and all the data is imported
into it. ...
So what we need todo is import all the free government data,

Finally and happily :), the OSM foundation has agreed to use GeoBase
data.  ... the description is rather vague, however... the ASSUMPTION
is that EVERYTHING from the Ibycus Topo CAN and will eventually get
imported onto OpenStreetMap.
The question is Exactly how much? ... and if the data can be cross
referenced to the origional source. (a tag geobase=*)

So.... this is why we cant directly import Ibycus Topo ... but can
import the stuff from where he got the data from.

If you want to see the ibycus topo on a smaller mapsource map u can
use "mapsettoolkit". .. i am using http://www.gpssledmaps.com/guide/
as the author created an excellent tutorial to make the map
installable.   (there is a bug, in the ISS file thats produced
(solution: add a slash in the directory source)  ... right now i am
working on creating smaller mapsets for Ibycus to host, so people can
download just each province, instead of the whole thing.

Anyway,
This seems to be a great inturn solution... as the data that will get
imported is EXACTLY THE SAME ... as what is shown on the ibcus topo...
question is just how much? ... the source is the same.

If this isn't clear, let me know.
It would be great to have help in updating the wiki about this topic.

Cheers,
Sam




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