Bjorn The correct way to handle this is to attach an event handler to the endzoom event. This event should manage the size of the symbols so that they are propotionally sized. Choose the zoom level at which the symbol renders at the right proportion, this will be your refernece zoom level. Then size the symbol propotionally the ratio of resolution @ current zoom level / resolution @ reference zoom level. Depending on the event firing order, you may also need to call redraw() on your vector layer. Matt
Bjorn Sandvik wrote: > > Hi, > > I'm currently testing the capabilities of doing thematic mapping with > OpenLayers. > > This is a proportional symbol map based on GeoJSON encoded data: > http://thematicmapping.org/experiments/openlayers_propsymb.htm > > My question: Is there a way to keep the relative size of the symbols > when the users zoom in/out? > (symbols should keep their size relative to the size of the countries). > > Bjorn > > http://blog.thematicmapping.org > > > > > -- > The University of Edinburgh is a charitable body, registered in > Scotland, with registration number SC005336. > > _______________________________________________ > Users mailing list > Users@openlayers.org > http://openlayers.org/mailman/listinfo/users > > -- View this message in context: http://www.nabble.com/Proportional-Symbol-Mapping-tp16484334p16491535.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
