Thanks to the suggestion made by Barend Köbben I found this post <a href="http://thematicmapping.org/playground/openlayers_propsymbols_geojson.php">http://thematicmapping.org/playground/openlayers_propsymbols_geojson.php</a> which was showing what I need.<br>
<br>I've altered the example and it is now running at <a href="http://www.mapwindow.org/conference/2012/usermap.html">http://www.mapwindow.org/conference/2012/usermap.html</a><br><br>But when I put the code (not that much) in the webpage with the participants I get horizontal transparent 'lines' in my OSM base map.<br>
Because my div has a gray background the lines are gray as well.<br>This is probably some CSS issue, but I haven't figured it out.<br><a href="http://www.mapwindow.org/conference/2012/participants.php">http://www.mapwindow.org/conference/2012/participants.php</a><br>
<br>Thanks all for your help and if you have a suggestion of the fix the lines let me know.<br>
<br>
Paul<br>
--<br>
Project manager Open Source GIS Conference 2012<br>
<br>
<br><br><div class="gmail_quote">2012/5/15 Barend Köbben <span dir="ltr"><<a href="mailto:kobben@itc.nl" target="_blank">kobben@itc.nl</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">Hi Paul,<br>
<br>
For such a relatively simple map I would probably not even use a WxS, just<br>
a geojson file of a simple world map and javascript to read the attributes<br>
of how many visitors per country. You could probably use OpenLayers for<br>
that (which I did not try myself), but other solutions too, see e.g the<br>
example of a simple thematic maps made with the D3 library at<br>
<a href="http://kartoweb.itc.nl/kobben/test/buurten.html" target="_blank">http://kartoweb.itc.nl/kobben/test/buurten.html</a><br>
<br>
BTW, you should of course not use a map where you color countries if a<br>
person comes from there (a so-called choropleth or chorochromatic map).<br>
That would greatly misdirect the user into thinking many people come from<br>
e.g. Russia, because he sees a huge red polygon, while none seem to come<br>
from Luxemburg (which he won't see at al at that scale). In reality maybe<br>
20 are from Luxemburg and only 1 from Russia. Better use proportional<br>
point symbols per country, see ge, the map "AANT_INW" in the example<br>
mentioned above...<br>
<br>
Barend<br>
<br>
--<br>
Barend Köbben<br>
Senior Lecturer, ITC - University of Twente,<br>
Faculty of Geo-Information Science and Earth Observation<br>
PO Box 217, 7500AE Enschede (The Netherlands)<br>
<a href="tel:%2B31-%280%2953%204874%20253" value="+31534874253">+31-(0)53 4874 253</a><br>
<br>
<br>
<br>
<br>
On 14-05-12 22:34, "Paul Meems" <<a href="mailto:bontepaarden@gmail.com">bontepaarden@gmail.com</a>> wrote:<br>
<br>
><br>
><br>
><br>
</div><div><div class="h5">>Hi,<br>
><br>
>I'm working on a kind of user map.<br>
>It should be a map with all the countries of the world and the countries<br>
>are colored if someone from that country is coming to the Open Source GIS<br>
>conference.<br>
>I also need a label with the name of the country and the number of people.<br>
><br>
>I have some experience with OL together with GeoServer and PostGIS, but<br>
>for this web page I can't use that.<br>
><br>
>I think I need a WFS server that has the countries of the world and then<br>
>use a GML file with my data to create the labels and color the countries,<br>
>am I right?<br>
><br>
>I'm already stuck at the first step. Is a public WFS server available<br>
>that I can use to do this?<br>
><br>
>I've already made a static image of what I want, but I would rather use<br>
>OL.<br>
>Can anybody advise me on this?<br>
><br>
>Here are my static images:<br>
><a href="http://www.mapwindow.org/conference/2012/participants.php" target="_blank">http://www.mapwindow.org/conference/2012/participants.php</a><br>
><<a href="http://www.mapwindow.org/conference/2012/participants.php" target="_blank">http://www.mapwindow.org/conference/2012/participants.php</a>><br>
><br>
>Thanks,<br>
><br>
>Paul<br>
>--<br>
>Project manager Open Source GIS Conference 2012<br>
<br>
<br>
</div></div><div class="im">Faculty of Geo-Information Science and Earth Observation (ITC)<br>
University of Twente<br>
Chamber of Commerce: 501305360000<br>
<br>
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