Creating equally spaced lines of latitude in openlayers?

General talk
1

How can such a thing be a achieved?
I don’t mean using openlayers default tiles but google maps/ openstreetmaps/ cloudmade tiles as they use the web mercator where the further away you are from the equator the more distorted the world is.
For lines of longitude im just running a loop and incrementing the degrees to create these lines, but have no idea how I would go about doing the same for latitude lines.
Any help would be great
Thanks

2

Have you looked at the graticule control?

http://openlayers.org/dev/examples/graticule.html

http://dev.openlayers.org/apidocs/files/OpenLayers/Control/Graticule-js.html

3

Thanks. Yea I have seen it. Those map tiles in the graticule example you sent are the open layers default tiles using ESPG:4326 projection, so thats why the latitude lines are equally spaced. But I need to use tiles from the map services mentioned above

4

It’ll display the graticule in the same projection your map display is using.

See http://maps.openstreetmap.ie/map2.html?zoom=4&lat=43.82012&lon=-5.08585&layers=TB00000FFFFFFFFFFFFF

5

The problem is that I need a square grid. (equally spaced latitude and longitude lines). Sorry I wasn’t too clear in the question but when I ment equally spaced, i mean visually, not in degrees, but in pixels.