I am doing very similar things. Simple is add all the new layers first,
then remove the old ones. Probably a lot more effecient though to remove
all but the current baselayer, add all the new ones, then remove the old
baselayer.
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Phil Scadden, Senior Scientist GNS Science Ltd 764 Cumberland
I have a map with lots of image layers (in addition to a few reference
layers) for "scenario A". References to these image layers are stored in
a global array, say "globLayers". I want to "reset" my map to depict
another "scenario B". Right now I am removing all the layers for
scenario A and th
