On 1/31/2013 2:38 AM, maurotello wrote:
Hello, I need to copy features to another layer and then edit, realizao
the procedure but I can not get the correct coordinates of each feature,
some example of this?
thanks
I do something similar in a few of my apps: load a vector feature from
the HIGHLIGHTS layer into the EDITABLES layer, which has a ModifyFeature
Control.
The technique I use is super simple:
1. There are two Vector layers: HIGHLIGHTS and EDITABLES.
2. getHighlightGeometryByID() fetches the correct Feature based on an
attribute. I gave them an "id" attribute, you may go by a name or other
ID field.
3. makeEditableGeometryByID() fetches the Feature, empties out
EDITABLES, then clones and loads the Feature into EDITABLES.
function getHighlightGeometryByID(id) {
for (var i=0, l=HIGHLIGHTS.features.length; i<l; i++) {
var feature = HIGHLIGHTS.features[i];
if (feature.attributes.id == id) return feature;
}
return null;
}
function makeEditableGeometryByID(id) {
// fetch the HIGHLIGHTS geometry with the given id, clone it into
the EDITABLES layer
// this empties the EDITABLES layer first, so this newly-selected
feature is the only one
var old_feature = getHighlightGeometryByID(id);
if (! old_feature) return;
var new_feature = old_feature.clone()
EDITABLES.removeAllFeatures();
EDITABLES.addFeatures([ new_feature ]);
return new_feature;
}
--
Greg Allensworth, Web GIS Developer
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