Tagged Questions

12
votes
2answers
13k views

How to convert Vector Layer coordinates into Map Latitude and Longitude in Openlayers

I'm pretty confused. I have a point: x= -12669114.702301 y= 5561132.6760608 That I got from drawing a square on a vector layer with the DrawFeature controller. The numbers seem...erm...awfull ...
8
votes
3answers
6k views

How to transform a distance from degrees to metres?

I'm using OpenLayers with an ordinary mercator map and I'm trying to sample a bounding box by finding a grid of points in latlong. The bbox is expressed in latlon, e.g. ...
6
votes
1answer
1k views

Mercator projection world map with Geoserver and Openlayers

I'm trying to render a world map shapefile on my Geoserver with a Mercator projection. I've tried declaring the SRS on Geoserver and defining EPSG projections of 3785 or 900913 in Openlayers with no ...
6
votes
1answer
6k views

OpenLayers Google Maps Projection Problem w/ KML

This is my first time on stackoverflow and working with Openlayers & Google Maps. I've been browsing different forums & sites, including OpenLayers.org, to solve my issue. I've done searches ...
4
votes
1answer
533 views

How can I use a Mapnik-Backgroundlayer with lat-lon layers in one map with OpenLayers?

I have an application with a map-client using OpenLayers. I want to use Mapnik-data as background-layer, as provided with the class OpenLayers.Layer.OSM.Mapnik. For that I have to switch to the ...
3
votes
4answers
6k views

Change Projection in OpenLayers Map

I want to set "EPSG:4326" as the projection of an OpenLayers map, but when I try it, I always get "EPSG:900913". function init() { var options = { projection: new ...
3
votes
2answers
708 views

Overlay for plotting MGRS

I'm trying to plot MGRS lines over a map in an overlay using OpenLayers (JavaScript). Where I'm really having problems is identifying the strange squares (non-100kmx100km grids). Does anyone know ...
3
votes
2answers
2k views

OpenLayers Projections

I can succesfully do: point.transform(new OpenLayers.Projection("EPSG:900913"), new OpenLayers.Projection("EPSG:4326")); To a point that is in the google format (in meters), but when I want to do ...
3
votes
2answers
2k views

How can I mix layers with different coordinate system in OpenLayers?

I'm using an OpenLayers-map and I want to use in it different mapservers, that use different coordinate systems. Can OpenLayers integrate it in the same map and automatically converts ...
2
votes
2answers
569 views

Coordinates conversion

I am working over a small component for a web portal that show polygons over a map, using OpenLayers, Google Maps, and another proprietary source . The user has the points in PSAD56 (UTM) datum ...
2
votes
1answer
492 views

How to reproject a vector layer when you switch between base maps of different projections

I have OpenLayers map with two base layers: MetaCarta (EPSG:4326) and Google map (Mercator). sphericalMercator = false, units are degrees. There are also some markers, boxes, and vector data on the ...
2
votes
2answers
760 views

EPSG:4008 Layer Not Displaying

I have a map with OSM and Google Base layers and EPSG:4326 overlays. Now I am also trying to add overlays with other EPSG's to my map. Overlays which had an EPSG:2333 displayed just fine with no ...
2
votes
3answers
3k views

OpenLayers, Bing and a KML

I'm trying to lay an KML over VirtualEarth Map in OpenLayers, but it doesn-t work. I guess it has to be something with the projection. Map: var options = { controls: [ new ...
1
vote
2answers
2k views

Openlayers + Mapnik + Tilecache configuration problem

I am trying to setup Mapnik + tilecache but can't see any tiles in the browser when I set bbox parameters in both Tilecache.cfg and Openlayers but when I don't specify the bbox everything works fine ...
1
vote
2answers
1k views

OpenLayers: Get resolution of map in a given projection (4326)

I'm using OpenLayers to display OpenStreetMap maps. (Though, I'd assume this should be general enough to work for any map product...) I'm displaying some very sophisticated vector overlays, and the ...

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