An alternative to OpenLayers that I find simpler is Leaflet (<a href="http://leaflet.cloudmade.com">http://leaflet.cloudmade.com</a>). Again quite a few people have used it for displaying points of interest over a base OSM map - see for example <a href="http://brewmap.maps3.org.uk">http://brewmap.maps3.org.uk</a>, which shows points that you can click to see additional information. Chris Hill did a nice write up on producing something similar at <a href="http://chris-osm.blogspot.co.uk/2011/05/leaflet.html">http://chris-osm.blogspot.co.uk/2011/05/leaflet.html</a>.<div>
<br></div><div>Both OpenLayers and Leaflet will easily do what you want though for web based maps - you will need to think of an alternative if you want printable ones though - I have used mapnik in the past to draw transparent overlay images that can be put on top of a base map.<br>
<div><br></div><div>Graham.<br><br><div class="gmail_quote">On 18 August 2012 11:55, Andrew Errington <span dir="ltr"><<a href="mailto:erringtona@gmail.com" target="_blank">erringtona@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On Sat, 18 Aug 2012 19:50:07 Gilles Pelletier wrote:<br>
> In my town we have a service called Taxibus.<br>
> You call and give a starting and ending post number and the time.<br>
> At the specified time, a taxi comes up to the starting post and takes you<br>
> to the ending post for a low fixed fee.<br>
> I would like to put on the web a page with openstreetmap imbedded and with<br>
> all the post numbers included.<br>
> This might clutter up the global map so is there a way to add them on the<br>
> fly as the map is loaded and still retain the capability for the map to be<br>
> expanded, reduced, moved, etc?<br>
<br>
</div></div>You should take a look at OpenLayers.<br>
<br>
You can make a webpage with OSM as the background, then add your own<br>
information as a transparent layer on top. You can have many layers and turn<br>
them on and off.<br>
<br>
Here is a very simple example:<br>
<a href="http://wiki.openstreetmap.org/wiki/Openlayers_POI_layer_example" target="_blank">http://wiki.openstreetmap.org/wiki/Openlayers_POI_layer_example</a><br>
<br>
But there are many other examples on the web, and a lot of OpenLayers<br>
documentation.<br>
<br>
Best wishes,<br>
<br>
Andrew<br>
<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br>Graham Jones<div>Hartlepool, UK.</div><br>
</div></div>