VSDB-Analysis Tool: General

VSDB-Analysis Functionality

The VSDB-Analysis tool ties together results from the Point-Stat and Grid-Stat tools by providing summary statistical information and a way to filter their VSDB output files. The VSDB-Analysis tool processes the VSDB output of the Point-Stat and/or Grid-Stat tools and performs one or more analysis jobs on the data. The VSDB-Analysis tool may be run by specifying a single analysis job on the command line or multiple analysis jobs using a configuration file. The analysis job types are summaried below:

• The vsdb_job_filter job simply filters out lines from one or more VSDB files that meet the filtering options specified.
• The vsdb_job_summary job operates on one column of data from a single VSDB line type. It produces summary information for that column of data: mean, standard deviation, min, max, and the 10th, 25th, 50th, 75th, and 90th percentiles.
• The vsdb_job_aggr job aggregates VSDB data across multiple time steps or masking regions. It can be used to sum contingency table data or partial sums across multple lines of data.
• The vsdb_job_aggr_cts job aggregates contingency table line types and produces contingency table statistics from the aggregated table.
• The vsdb_job_aggr_cnt job aggregates partial sum line types and computes as many continuous statistics from the aggregated partial sums as possible.
• The vsdb_job_aggr_mpr job aggregate the matched pair output of Point-Stat and recompute the VSDB line type requested.
• The vsdb_job_go_index job computes the GO Index, a performance metric used primarily by the United States Air Force.

VSDB-Analysis Usage

View the usage statemet for Grid-Stat by simply typing the following:

bin/vsdb_analysis

At a minimum, you must specify at least one directory or file in which to find VSDB data (using the -lookin path command line option) and either a configuration file (using the -config config_file command line option) or a job command on the command line.