Select this option to have Vision generate the visualization map from preprocessed data in the project summary table, rather than directly from the standard database tables. In most cases, Vision generates the map much faster if you select this option.
Calculations performed for the visualization maps place high demands on processor resources. In some cases, it can take a long time to generate maps for large databases. To minimize the time it takes to generate the report, first run the Refresh Project Summary Table utility to calculate and store the data in a summary table. Then, before you generate the visualization map, select the
Use Summary Table check box.
If the Refresh Project Summary Table utility has never been run, this option is not available. In that case, Vision displays a note next to the option:
Use Summary Table (First, refresh it under Advanced Utilities)
After you run the utility the first time, Vision makes the
Use Summary Table option available and displays the most recent date and time that the utility was run:
Use Summary Table (Last updated: 4/5/11 12:09 PM)
Note that the Refresh Project Summary Table utility calculates and saves project summary information for regular projects only.
Recommendation: Schedule the Refresh Project Summary Table utility to run each night, so that each day the data for reports and visualization maps are current as of the night before for all Vision users.
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