Hi List,
This is the first post from this newbie, so please complain/guide if I do a
bad job of explaining myself in this post
I have developed an application that returns an image encoded in a data url
to the user, which I place on my map using OpenLayers.Layer.Image. I'm not
sure this detail matters, but the user defines a polygon using
OpenLayers.Control.DrawFeature with the handler OpenLayers.Handler.Polygon.
and a layer named "polygonLayer" The image is added with:
resultLayer = new OpenLayers.Layer.Image(
'Spatial result',
resp.result.image.data,
new OpenLayers.Bounds(resp.result.image.bounds),
new OpenLayers.Size(resp.result.image.size.w, resp.result.image.size.h),
{
isBaseLayer: false,
displayInLayerSwitcher: false,
projection: new OpenLayers.Projection('EPSG:900913')
}
)
The first time a user submits a polygon, the effect is spot on - the image
is rendered and looks lovely. When they send a second request, The result
is not so pretty, as the image is obscured by something that is probably a
representation of the bounding box (not sure if I can add images, but I
have tried)
[image: Inline image 1]
I've been asking Google for help for a while, but have not been able to
find the right words.
Can anyone advise on how I can stop this from happening?
Cheers,
Simon Knapp
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