Dear Sandro and Peter,<div><br></div><div>Thank you both for your help. </div><div><br></div><div>I took some time researching the documentation and the web, and so far I've learned a lot based also on the SQL-MM for both Topology and the one suggested previously.</div>
<div><br></div><div>I have one last question that has been taking me a lot of effort to figure out. If could someone tell me if this is possible I'd really appreciate.</div><div><br></div><div>For our assignment, we were interested on, say, get a picture from google maps which has, among many things 3 buildings. We wanted to use some program to make these 3 buildings turn into for example a polygon or that we could draw polygons above them and also few dotes and lines. We also didn't want to let the other information of the map go to waste, so we wanted all the map to be saved on a shapefile so that it could be loaded at postgis 1.3.6 on a postgrees 8.4. Note that, in case I could turn all the map into a shapefile, we would still need to use some sort of ID on the geometry forms we are actually interested or it would be hard to find it out inside postgis (or so I believe).</div>
<div><br></div><div>I found out that PostGIS could load shapefiles based on ESRI .shp and other extensions for attributes, etc, but I've did not find yet a tool that could take as input the google maps image, and let me save it as a shape file to be directly loaded on the PostGIS. Is that possible?</div>
<div><br></div><div>I've dowloaded an ArchGis 10 trial and have been trying to use ArchMap, and ArchCatalog or ArchMap (web) to try to figure things out, but so far I wasn't very lucky. </div><div><br></div><div>
I saw few shapefiles even from my country and state on shapefiles, but they do not hold this sort of specific information (I'm actually trying too find my university campus on map and put it into shape files). </div>
<div>
<br></div><div>Another thing I was curious and still didn't find out is if 1.3.6 did not support topology by that time. Since my university computers only have postgis on this version I'm "stucked" on it and have not been able to use topology.</div>
<div><br></div><div>Thank you!</div><div><br clear="all">Carlos Andrade<br><div><a href="http://carlosandrade.co" target="_blank">http://carlosandrade.co</a></div><br>
<br><br><div class="gmail_quote">2011/10/17 Sandro Santilli <span dir="ltr"><<a href="mailto:strk@keybit.net">strk@keybit.net</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">On Mon, Oct 17, 2011 at 01:24:43AM -0200, Carlos Andrade wrote:<br>
<br>
> I came across this presentation while searching for it:<br>
> <a href="http://oslandia.org/postgis_paris_juin_2011/postgis_paris_topology_santilli.pdf" target="_blank">http://oslandia.org/postgis_paris_juin_2011/postgis_paris_topology_santilli.pdf</a><br>
><br>
> Is anyone aware where can I find the tool used for this presentation or even<br>
> more information about how to model geographic data?<br>
<br>
</div>I've been using QGis for the display the topology and PostGIS functions<br>
to edit it. Topology model is defined by ISO/SQL-MM document.<br>
<div class="im"><br>
> I've search the list<br>
> here as well but I only found a sugestion about DB Designer, and i'm not<br>
> quite sure if that was the tool used on that presentation or if it would be<br>
> available for us (we're just students, we can't afford a pay to use tool,<br>
> nor it be feasable to buy just for one school assignment).<br>
<br>
</div>Pencil and paper are the best tools out there.<br>
<br>
It may be too much old school but I'd suggest using Entity-Relationship<br>
diagrams for a start. There's a nice ER diagram about the topology model,<br>
for example, under the topology/ER/ directory of the PostGIS source tree.<br>
<br>
--strk;<br>
<br>
() Free GIS & Flash consultant/developer<br>
/\ <a href="http://strk.keybit.net/services.html" target="_blank">http://strk.keybit.net/services.html</a><br>
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