wrong type of the buffer of more than one geometries

[carlshe]

I selected many geometries, including points, lines and polygons, from 3 layers. and then I make a MgMultiGeometry based on the MgGeometryCollection of these selected geometries, and then I make a buffer of this MgMultiGeometry.

Theorectically, if these selected geometries are very close, the buffer geometry should be a single polygon, or else, the buffer might be a MgMultiPolygon.

But what I got is always a geometry of MgPolygon even though it is visually shown as many disconnected polygons.

I found this problem is because I need a spatialfilter to select geometries on the map. When I create a buffer, composed of many polygon, of selected geometries as the spatialfilter, I found only those geometried intersected with some a polygon of the buffer can be selected out.

I stepped into the code and found the generated buffer is really of type 'MgPolygon' but with data of 'MgMultiPolygon'.

Follow is part of the code:

MgGeometryCollection mgc = GetGeometryCollectionFromSelectionXML(SelectionXML);

if (mgc.Count > 0) {

MgGeometryFactory geomFactory = new MgGeometryFactory(); MgGeometry geo = null; if (mgc.Count == 1)

geo = mgc.GetItem(0);

else

geo = geomFactory.CreateMultiGeometry(mgc);

MgGeometry Buffer = geo.Buffer(dist, null); ......

}

[jbirch]

Can you test this against 2.1 to see if this is still a problem, so that we can bump the version number?

A complete code example against the Sheboygan dataset would allow developers to re-create the problem quickly and would make a resolution more likely.

[jbirch]

Old ticket; closing. If still a concern, please retest at version 2.1 and re-open.