TD_MINFO returns one row for each matrix instance found in the target table. The summary provides a high-level understanding of the matrix data as well as determining if there is an issue. For example, if you expect data to have a certain number of rows and columns, a certain data type, or only a specific range of values, then checking the summary information can verify it. Each returned row provides the following information about a matrix:
- Row index data type
- Starting row index value
- Ending row index value
- Number of row index entries
- Indicator that the matrix is regular (discrete) or irregular along row index
- Row index sample interval for regular series or average sample interval for irregular series
- Column index data type
- Starting column index value
- Ending column index value
- Number of column index entries
- Indicator that the matrix is regular (discrete) or irregular along column index
- Column index sample interval for regular series or average sample interval for irregular series
- Content type
- Minimum sample magnitude
- Maximum sample magnitude
- Average sample magnitude
- Number of NULL values
- Indicator matrix is well formed or malformed