Thanks for the prompt reply..here is the link again..
https://webdisk.ucalgary.ca/~snaqvi/public_html/images/map_2.html
1) Below is the metadata with the projection information for the 30 min
tile, the 7.5 minute tiles seem to merge nicely at zoom 12 and beyond.
UPPER LEFT X=-105.2525000000
UPPER LEFT Y=39.7926220657
LOWER RIGHT X=-104.7475000000
LOWER RIGHT Y=39.4573779343
WEST LONGITUDE=105° 15' 9.0000" W
NORTH LATITUDE=39° 47' 33.4394" N
EAST LONGITUDE=104° 44' 51.0000" W
SOUTH LATITUDE=39° 27' 26.5606" N
PROJ_DESC=Geographic (Latitude/Longitude) / WGS84 / arc degrees
PROJ_DATUM=WGS84
PROJ_UNITS=arc degrees
COVERED AREA=624 sq mi
NUM COLUMNS=6102
NUM ROWS=4051
PIXEL WIDTH=0.0000828 arc degrees
PIXEL HEIGHT=0.0000828 arc degrees
Can you suggest any remedy for the 30 minute tile, is there a method in the
API that you can suggest?
2) With the map center I've tried changing it within the if statement, can
you suggest a better way using the zoomend listener.
3) As I zoom out below Zoom level-9, I should not see any overlay as per the
following logic, but it doesn't seems to work..?
GEvent.addListener(map, "zoomend", function(oldLevel, newLevel) {
if (newLevel <= 9) {
map.clearOverlays();
}
Thanks,
On Fri, Apr 10, 2009 at 1:39 PM, Andrew Leach <[email protected]
> wrote:
>
> On Apr 10, 8:17 pm, Stampeder <[email protected]> wrote:
> >
> > I would like to move the center of the map as 7.5 minute tiles are not
> > centered as I zoom in to level 11.
>
> In your zoomend listener, set the centre you want as well changing the
> overlays.
>
> Or have I misunderstood the requirement?
>
> Your overlays don't seem to match the underlying maps very well. Do
> they use the same projection?
>
> Andrew
> >
>
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