[OpenLayers-Users] marker help with tilecache
Aco
acopetko at gmail.com
Wed Mar 5 11:36:29 EST 2008
Thanks Eric for the reply,
But sorry what do you mean by mixing projections,
I know that using the layer called "ol_wms" instead of "layer" in my
javascript code that everything works fine. So when I am not caching any
tiles it works fine, but when i am then I can't add any new layers such as
markers.
Thanks for any replies,
Aleks
Eric Lemoine-3 wrote:
>
> Hello, you're mixing projections, which looks suspicious to me.
>
> 2008/3/5, Aco <acopetko at gmail.com>:
>>
>> I am still trying to figure out this problem, please any help would be
>> appreciated.
>> I really cannot find a solution anywhere else and my biggest hope is this
>> forum.
>> Any thoughts ?
>>
>> Thanks Again,
>>
>> Aleks
>>
>>
>>
>> Aco wrote:
>> >
>> > Hi and thanks to all the replies in advance,
>> >
>> > I am relatively new to tilecache. I have installed it on windows and it
>> > works fine, but the problem is that is when i want to add an openlayers
>> > marker, well it just doesn't display it. It displays it when I am not
>> > using
>> > tilecache to cache the image tiles.
>> >
>> > Here is my html.
>> >
>> > <html xmlns="http://www.w3.org/1999/xhtml">
>> > <head>
>> > <style type="text/css">
>> > #map {
>> > width: 100%;
>> > height: 99%;
>> > border: 1px solid black;
>> > }
>> > body {
>> > padding:0px;
>> > margin:2px
>> > }
>> > #labs {
>> > position:absolute;
>> > bottom:15px;
>> > left:7px;
>> > font-size:smaller;
>> > z-index: 5000;
>> > }
>> > </style>
>> > <script src="http://openlayers.org/api/OpenLayers.js"></script>
>> > <!--<script type="text/javascript" src="C:/Tomcat6/webapps
>> > /examples/Whitesnow/js/main_actions_1.0.js"></script>-->
>> > <script type="text/javascript">
>> > <!--
>> > var lon = 5;
>> > var lat = 40;
>> > var zoom = 5;
>> > var points = [];
>> > var map, layer, polygonLayer, markers, points_ring,
>> > area_of_interest_polygon, area_of_interest_feature, ol_wms, mouse;
>> > var icon_size = new OpenLayers.Size(1700,1700);
>> >
>> > var coords_lat = new Array();
>> > var coords_lon = new Array();
>> >
>> > var vector_style = OpenLayers.Util.extend({},
>> > OpenLayers.Feature.Vector.style['default']);
>> > vector_style.strokeColor = "#7F0000";
>> > vector_style.fillColor = "red";
>> >
>> > function init(){
>> > var options = {
>> > units: "m",
>> > projection: 'epsg:32661',
>> > resolutions:
>> [5500000.0,2750000.0,1375000.0,687500.0,343750.0,
>> > 171875.0,85937.5, 42968.75,21484.375,10742.1875,5371.09375,2685.546875,
>> > 1342.7734375,671.38671875,335.693359375,167.8466796875,83.92333984375,
>> > 41.961669921875,20.9808349609375,10.49041748046875],
>> > maxExtent: new OpenLayers.Bounds
>> > (-2200000,-712631,3072800,3840000)
>> > };
>> > var options2 = {
>> > units: "m",
>> > maxResolution: "auto",
>> > projection: "EPSG:3573",
>> > resolutions: [5500000.0, 2750000.0, 1375000.0,
>> 687500.0,
>> > 343750.0, 171875.0, 85937.5, 42968.75, 21484.375, 10742.1875,
>> 5371.09375,
>> > 2685.546875, 1342.7734375, 671.38671875, 335.693359375, 167.8466796875,
>> > 83.92333984375, 41.961669921875, 20.9808349609375, 10.49041748046875],
>> > maxExtent: new OpenLayers.Bounds
>> > (-4000000,-4200000,3000000,3500000)
>> > };
>> > map = new OpenLayers.Map( 'map');
>> >
>> > ol_wms = new OpenLayers.Layer.WMS( "OpenLayers WMS",
>> > "http://labs.metacarta.com/wms/vmap0?",
>> {layers:
>> > 'basic', srs: 'epsg:42304'});
>> >
>> > polygonLayer = new OpenLayers.Layer.Vector("Polygon
>> Layer");
>> > markers = new OpenLayers.Layer.Markers( "Markers" );
>> >
>> >
>> >
>> > layer = new OpenLayers.Layer.WMS( "Openlayers WMS",
>> > "
>> > http://lakeice.uwaterloo.ca/TileCache-2.01/tilecache.cgi?", {layers:
>> > 'nsidc_polar', format: 'image/png' },options2 );
>> >
>> > map.addLayer(ol_wms);
>> >
>> > // map.addControl(new OpenLayers.Control.Permalink());
>> > if (!map.getCenter()) map.zoomToMaxExtent();
>> >
>> >
>> >
>> > mouse = new OpenLayers.Control.MousePosition();
>> > map.addControl(mouse);
>> >
>> > // markers.clearMarkers();
>> > //var marker = new OpenLayers.Marker(new
>> OpenLayers.LonLat(0,
>> > 0), new OpenLayers.Icon("
>> > http://lakeice.uwaterloo.ca/TileCache-2.01/target2.png", icon_size));
>> > //markers.addMarker(new OpenLayers.Marker(new
>> > OpenLayers.LonLat(0,
>> > 0), new OpenLayers.Icon("
>> > http://lakeice.uwaterloo.ca/TileCache-2.01/target2.png", icon_size)));
>> > // markers.addMarker(new OpenLayers.Marker(new
>> > OpenLayers.LonLat
>> > (-5859.37500, -27734.37500), new OpenLayers.Icon("
>> > http://lakeice.uwaterloo.ca/TileCache-2.01/target2.png", icon_size)));
>> >
>> > map.events.register("click", map, function(e) {
>> > if (coords_lon.length < 4) {
>> > // alert("no");
>> > var lonlat = map.getLonLatFromViewPortPx(e.xy);
>> > coords_lon.push(lonlat.lon);
>> > coords_lat.push(lonlat.lat);
>> > // setOutputPoints();
>> > drawUniversalSelection();
>> > }
>> > });
>> >
>> >
>> > }
>> >
>> > function drawUniversalSelection() {
>> >
>> > points.length = 0;
>> > markers.clearMarkers();
>> > for (var x = 0; x < coords_lon.length; x++) {
>> > var marker = new OpenLayers.Marker(new
>> > OpenLayers.LonLat(coords_lon[x],
>> > coords_lat[x]), new OpenLayers.Icon("target2.png", icon_size));
>> > points[x] = new OpenLayers.Geometry.Point(coords_lon[x],
>> > coords_lat[x]);
>> > markers.addMarker(marker);
>> > map.addLayer(markers);
>> > //alert("yep");
>> >
>> > }
>> >
>> > if (coords_lon.length > 1) {
>> > points.push(points[0]);
>> > // alert("yep");
>> > }
>> > points_ring = new OpenLayers.Geometry.LinearRing(points);
>> > area_of_interest_polygon = new OpenLayers.Geometry.Polygon
>> > (points_ring);
>> > area_of_interest_feature = new OpenLayers.Feature.Vector
>> > (area_of_interest_polygon,null,vector_style);
>> > polygonLayer.destroyFeatures();
>> > polygonLayer.addFeatures([area_of_interest_feature]);
>> > map.addLayer(polygonLayer);
>> >
>> > }
>> > // -->
>> > </script>
>> > </head>
>> > <body onload="init()">
>> > <div id="map">
>> > <div id="labs">From http://labs.metacarta.com/ MetaCarta
>> > Labs .</div>
>> > </div>
>> > </body>
>> > </html>
>> >
>> >
>> > Thanks in advance,
>> >
>> >
>> > Aleks
>> >
>> > _______________________________________________
>> > Users mailing list
>> > Users at openlayers.org
>> > http://openlayers.org/mailman/listinfo/users
>> >
>> >
>>
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>>
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