Generating Composite Thematic Maps From Semantically-Different Shapefile Collections

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Generating Composite Thematic Maps From
Semantically-Different Shapefile
Collections Ghulam Memon, Ashraf Memon, Kai Lin,
Ilya Zaslavsky San Diego Supercomputer Center
The portlet displays the concepts from ontology
with which atleast one of the queryable datasets
is registered. Search by ontologies instead of
keywords makes the query interface flexible and
user-friendly, since users dont have to think
about keywords anymore. Ontologies suggest the
search that can be made and resolve concepts to
keywords behind the scenes.
The portlet differentiates between annotated and
non-annotated datasets and classifies them into
queryable and background layers. Background
layers cannot be queried and are added only to
facilitate the purpose of visualization
Generated resultsets can be downloaded as zip
files and if the user wants can be registered
with GEON catalog.
Results are displayed visually as a static image.
Yellow color represents the resultsets. Light
grey region represents the part which was queried
but had no results. Dark grey part represents the
region which was not queried as it was not
registered with the desired concept. Capability
to display ontology based colors also exists. An
interactive ArcIMS map can also be created to
visualize the results
Generated Resultsets can be added to users work
area and thus can be integrated with existing
maps. Generated Resultsets can be associated with
ontologies as well, which can serve for
fine-grained search.
An interactive ArcIMS map can also be created to
visualize the results
Interface to Map Integration Workflow
Capabilities

• Datasets are queried for concepts instead of
  keywords.
• Execute implicit workflows from portlet and
  handle intermediate results and failures.
• Resultsets can be added to users personal
  workspace (thus can be integrated with other
  maps) or can be downloaded to users disk.
• Future work includes
• Search by spatial extent.
• Indexing the query, so that the resultset
  generation time can be reduced.

Map Integration Workflow
File Transfer service
Uncompress service
Image Assembly service
Image Fusion service
Query service
Command.xml
Data Conversion service