Do I need to install ImageMagick?
• No. Virtuoso Commercial Edition releases include a bundled ImageMagick plugin. The plugin is standalone and includes all the functionality needed to generate Deep Zoom images. Why are my collections sometimes slow to load? • PivotViewer collections can be significantly slower to load than a simple web page. Many factors can influence the load time, however there are several actions you can take to reduce it. Choosing between them requires understanding which parts of the collection delivery pipeline can be the most time-intensive. Possible factors to consider include: • The characteristics of the SPARQL query and the result set size • Virtuoso’s query execution speed is generally excellent. Obviously though, the query time is heavily influenced by the result set size. SPARQL-FED queries to a remote sparql endpoint will, unsurprisingly, be slower than to the local endpoint. • Loading of the collection by the PivotViewer control • The CXML file for large collections can be several MBs.
