From what I can gather, it is not supported in OpenLayers:
http://trac.openlayers.org/wiki/three/RemoveOverlayBaseLayerDichotomy
You can edit the MapGuide scale ranges to match the google ones.
Studio won't let you do it, but in Maestro you can edit the Xml to do so.
Maestro r3481 has support for editing scales (avalible on the download
page).
Regards, Kenneth Skovhede, GEOGRAF A/S
Rodolfo Moreno skrev:
Thanks Arnd, It works very good.
On the other hands, I have another question related with it.
I am overlaying google maps with mapguide's layers. The problem is that the
displaying scales are different.
Google maps MAPGUIDE
144000 100000
72000 52000
36000 27000
18000 14000
9028 7197
4514 3728
2257 1931
1129 1000
Then the overlay of these two layers (google and mapguide) doesn't coincide.
For example: The corner of the street1 and street2 in google layer is 200m
toward the north of
the that corner itself in mapguide layer. It happens due to that google
layer is to the scale of 1:2257 and mapguide layer is to the scale of
1:1931.
Is there any way that both layers have the same scales?
Regards
Arnd Wippermann wrote:
Hi Rodolfo,
the patch from the old post is really not needed and there are only 21
zoomlevels for Wuppertal.
Looking now at the question with a better understanding of OpenLayers, I
see, that I have only to set the numZoomLevels for the map object and
MAX_ZOOM_LEVEL for the Google layers.
The default values are
MAX_ZOOM_LEVEL = 19
numZoomLevels = 16
With the set
MAX_ZOOM_LEVEL = 21 (0 - 21 => 22 numZoomLevels)
numZoomLevels = 21+1
i can get the result without any patch.
var maxZOOMLEVEL = 21;
map = new OpenLayers.Map('map',
{
maxExtent: new
OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34),
numZoomLevels: maxZOOMLEVEL+1,
maxResolution: 156543.0399,
units: 'm',
projection: new OpenLayers.Projection("EPSG:900913")
});
var gsat = new OpenLayers.Layer.Google(
"Google Satellite",
{type: G_SATELLITE_MAP, sphericalMercator : true, MAX_ZOOM_LEVEL :
maxZOOMLEVEL}
);
At http://gis.ibbeck.de/ginfo/ you can zoom up to 21 zoomlevels.
I hope, that helps.
Arnd Wippermann
_______________________________________________
Users mailing list
[email protected]
http://openlayers.org/mailman/listinfo/users
-----
Rodolfo Moreno
CivilEng
_______________________________________________
Users mailing list
[email protected]
http://openlayers.org/mailman/listinfo/users
