 readme this module implements various addon overlay support for gmap it extends both the macro and the api interfaces macro add overlay sections into your macro gmap overlay kml http mapgadgetsgooglepagescom ctakml gmap overlay clientsidekml path to filekml gmap overlay georss http slashgeoorg indexrss gmap overlay traffic gmap overlay tile 02 http examplecom 8080 geoserver gwc service gmaps layers topp states zoom z x x y y the part before the first is the overlay type and overlay type options slash delimited which determines the behavior of the overlay the part after the depends on the overlay type kml the remainder is the url of the kml file clientsidekml the remainder is the path to the kml file georss the remainder is the url of the georss file traffic the remainder is ignored you still need to type the though tile the remainder is the url scheme for requesting map tiles x y and z will be replaced with the x y and zoom level overlay type options specified from left to right kml none at the moment clientsidekml none at the moment georss none at the moment traffic none at the moment tile opacity minresolution maxresolution opacity 00 10 or gif default is 10 the layer is assumed to be a png layer unless gif is stated minresolution minimum zoom level for this layer not working at the moment for overlays maxresolution maximum zoom level for this layer not working at the moment for overlays notes on clientsidekml you will need to fetch a third party script and put it in thirdparty see thirdparty readmetxt for more details notes on tile type tile type works with any service which knows how to serve a tiled map using google s tiling setup this is similar to tms but has a different numbering scheme documented at http codegooglecom apis maps documentation overlayshtml googlemapscoordinates tilecache http wwwtilecacheorg and geowebcache http geowebcacheorg are programs capable of providing tiles in this way of the two geowebcache is the easiest to set up from scratch interesting links for tilecache http crschmidtnet blog 311 usingtilecachewithgooglemapsandvirtualearth interesting links for geowebcache http oegeowordpresscom 20080520 the5minuteguidetosettingupgeoserverandgeowebcacheo example urls geowebcache geoserver extension http examplecom 8080 geoserver gwc service gmaps layers topp states zoom z x x y y geowebcache standalone http examplecom 8080 geowebcache gmaps layers topp states zoom z x x y y tilecache http examplecom tilecache 100 googletiles z x y png type google api settings overlay array all overlays are in one numerically indexed array array overlay type determines behavior of overlay type kml for kml and georss the url key is the url of the file url http mapgadgetsgooglepagescom ctakml array overlay type determines behavior of overlay type georss for kml and georss the url key is the url of the file url http slashgeoorg indexrss array overlay type determines behavior of overlay type traffic no options array overlay type determines behavior of overlay type tile options array tileurltemplate http localhost 8080 geoserver gwc service gmaps layers topp states zoom z x x y y ispng true opacity 02 notes georss and kml both use google s ggeoxml interface which autodetects a feed s format so it doesn t matter which you use todo minzoom and maxzoom don t actually do anything zoom limiting is designed for base layers and needs additional show hide code to work with overlays http groupsgooglecom group googlemapsapi browsethread thread a7aeb33781d9c573 http groupsgooglecom group googlemapsapi browsethread thread 555d0ccefad25ec6  