[OpenLayers-Users] Map Aspect Ratio Seems Off (Makes layers wide)
soatley
shawn at niagarafalls.ca
Fri Jun 19 16:38:24 EDT 2009
I am having an issue with the aspect ratio of my map and my knowledge of
projections is not that good, but my GIS co-workers are telling me that is
probably the cause. The attached image(
http://n2.nabble.com/file/n3122010/example.jpg example.jpg ) shows what the
map should look like (our existing mapping software) and how OL is
displaying it.
Here is how I instantiate my map object:
OpenLayers.Layer.cWMS = OpenLayers.Class(OpenLayers.Layer.WMS, {
isClickable: false
});
options = {
projection: new OpenLayers.Projection("EPSG:4326"),
maxExtent: new OpenLayers.Bounds(-79.287519, 42.920835, -78.956522,
43.156),
tileSize: new OpenLayers.Size(256, 256),
maxResolution: 2 / 256,
numZoomLevels: 15,
controls: [new OpenLayers.Control.LayerSwitcher(),
new OpenLayers.Control.MouseDefaults(),
new OpenLayers.Control.PanZoomBar(),
new OpenLayers.Control.OverviewMap(),
new OpenLayers.Control.KeyboardDefaults(),
new OpenLayers.Control.Navigation(),
new OpenLayers.Control.MousePosition({ div:
$j("#position").get(0) }),
new OpenLayers.Control.LoadingPanel(),
new OpenLayers.Control.ScaleBar()
]
};
map = new OpenLayers.Map('map', options);
var BaseMap = new OpenLayers.Layer.cWMS("Base Map",
["http://wmsServer/wms.png","http://wmsServer2/wms.png"],
{
layers: "BaseW Drawing,Background Colour,RoadCL Drawing,Surrounding
Lands Labels",
format: "image/png",
transparent: false
},
{
visibility: true,
isClickable: false
}
);
map.addLayers([BaseMap]);
You can see that I've extended the WMS layer just so that I can add the
'isClickable' property. The map was skewed before I created that, so that
is not the issue.
The GIS staff tell me that our data is projected in UTM 17N NAD83.
I hope I have provided enough information for someone to help me.
Thanks!
Shawn
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