[Geotools-gt2-users] Empty map layer causes map rendering issues

[Richard M. <mar...@go...>]

Hi

I am creating a simple map layer that I am using as a highlight layer. 
Basically it contains a circular 'halo' (external graphic) feature that is
positioned over a circle point feature to emphasize the current point
feature.  The layer is created when it is first needed and then cleared when
no longer required.  As well as the highlight layer I also have a shapefile
layer and a layer to display the point features.  When I clear the highlight
layer the map is redrawn as a tiny image in the top left corner and I see
the following warning in the console:

Possible use of "Transverse_Mercator (Inverse transform)" projection outside
its valid area.
Latitude 597°15.2'N is out of range (±90°).

This is code I'm using to clear the layer:

    FeatureSource<SimpleFeatureType, SimpleFeature> featureSource =
getFeatureSource();
    CollectionDataStore dataStore =
(CollectionDataStore)featureSource.getDataStore();
    FeatureCollection<SimpleFeatureType, SimpleFeature> featureCollection =
dataStore.getCollection();
    featureCollection.clear();

I'm using GeoTools v2.6.3 and a JMapPane.

The workaround is to delete the layer and remove it from the map context
when it is not required and recreate it from scratch each time it is needed
but I was hoping to not have to do this.

Any help or pointers would be gratefully appreciated.

Richard
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