This reminds me of a question I wanted to ask:
Is having multiple themes in a single layer or having multiple layers from an
exploded theme have better performance? (Assuming all exploded layers are
turned on compared to the single themed layer.)
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m
Depends on the number of themes and whether or not you are using a database or
a file based-datasource. For a layer that has a lot of themes, I have found
that having multiple layers from an exploded theme has MUCH better performance
when using MS-SQL as the backend.
Martin Morrison
Applicatio
The question is basically: X db queries for each exploded layer vs 1 db query
for a themed layer with X rules.
Theme rules require FDO filter evaluation of each feature (to resolve the
matching theme rule used to stylize it) from the root query result. The root
query result being a FDO query to th
