Selectively presenting timestamped time-series data values for retrieved supervisory control and manufacturing/production parameters

1. A process control and manufacturing information database client application including a graphical display interface for plotting and presenting received time-series data, the client application comprising:

a data acquisition interface for obtaining a set of timestamped time-series data values for an observed parameter from a process control and manufacturing information database;

a time-series data filter including at least one filtering operation applied to the set of timestamped time-series data values to render a filtered data set for plotting on the graphical display interface; and

a display function for rendering the filtered data set as a series of plotted points on a time-line graph.

2. The client application of claim 1 wherein the at least one filtering operation comprises a filter that selects a set of representative data points, of a grouped set of time-stamped time-series data values associated with a designated time period, according to a value-based selection criterion.

3. The client application of claim 2 wherein the value-based selection criterion includes designating for the filtered data set, from the grouped set, at least:

a data point having a largest value, and

a data point having a smallest value.

4. The client application of claim 3 wherein the value-based selection criterion includes a first data point after an exception.

5. The client application of claim 3 wherein the value-based selection criterion includes designating for the filtered data set, from the grouped set, at least:

a first data point within the designated time period, and

a last data point within the designated time period.

6. The client application of claim 5 wherein the value-based selection criterion includes a first data point after an exception.

7. The client application of claim 1 wherein the at least one filtering operation comprises a filter comprising:

a compression test sequence applied, upon receiving a next time-series data point, to at least the received next time-series data point, a held over data point and a last data point designated for plotting; and

a time override that forces designating a candidate data point for plotting without regard to whether the candidate point would be stored as a result of applying the compression test sequence, upon receiving the next time-series data point.

8. The client application of claim 7 wherein the candidate data point is the held over data point.

9. The client application of claim 8 wherein the time override comprises an operation that determines an elapsed time between the last data point designated for plotting and the next time-series data point and designates the held over data point for plotting if the elapsed time exceeds a specified override time period.

10. The client application of claim 8 wherein the time override further comprises a real-time window timer that measures an elapsed period after the time stamp of the held over point and designates the held over data point for plotting in response to a specified period, measured by the real-time window timer, expiring.

11. The client application of claim 7 wherein the compression test sequence comprises a value deadband test that is applied to the held over data point and the last data point designated for plotting.

12. The client application of claim 7 wherein the compression test sequence comprises a rate deadband test that is applied to at least the last data point designated for plotting, the held over data point, and the next time-series data point.

13. The client application of claim 12 wherein the rate deadband test comprises determining a change in slope between a first line segment and a second line segment, wherein the first line segment includes at least the last data point designated for plotting, and the second line segment includes the next time-series data point and the held over data point.

14. The client application of claim 13 wherein the first line segment further comprises the held over data point.

15. The client application of claim 7 further comprising a quality change test wherein the held over data point is designated for plotting if a quality assigned to the held over data point differs from the quality assigned to the last data point designated for plotting.

16. The client application of claim 1 wherein the at least one filtering operation comprises an integer value filter including at least a deadband stage.

17. The client application of claim 16 wherein the at least one filtering operation comprises an integer value filter including at least a time period-based data point filtering stage.

18. The client application of claim 1 wherein the at least one filtering operation comprises an integer value filter including at least a time period-based data point filtering stage.

19. The client application of claim 1 wherein a set of filtering operations making up the time-series data filter is extensible.

20. A method for displaying, by a process control and manufacturing information database client application, received time-series data, the method comprising the steps, performed by the database client application, of:

obtaining, via a client data acquisition interface, a set of timestamped time-series data values for an observed parameter from a process control and manufacturing information database;

rendering from the set of timestamped time-series data values, by a time-series data filter including at least one filtering operation performed by the client application, a filtered data set for plotting on the graphical display interface; and

rendering, by a display function of the client application, the filtered data set as a series of plotted points on a time-line graph.

21. The method of claim 20 wherein the rendering step comprises selecting, by a filter, a set of representative data points, of a grouped set of time-stamped time-series data values associated with a designated time period, according to a value-based selection criterion.

22. The method of claim 20 wherein the rendering step comprises performing, by a filter, the steps of

applying a compression test sequence, upon receiving a next time-series data point, to at least the received next time-series data point, a held over data point and a last data point designated for plotting; and

designating, based on a time override, a candidate data point for plotting, without regard to whether the candidate point would be stored as a result of the applying step, upon receiving the next time-series data point.

23. The method of claim 20 wherein the rendering step comprises applying, by an integer value filter, a deadband value test on an integer time-series data point.

24. The method of claim 23 wherein the rendering step comprises applying, by an integer value filter, a time period-based data point test on the integer time-series data point.

25. The method of claim 20 wherein the rendering step comprises applying, by an integer value filter, a time period-based data point test on an integer time-series data point.

26. A non-transitory computer readable medium including computer-executable instructions for displaying, by a process control and manufacturing information database client application, received time-series data, the computer-executable instructions facilitating performing, by the database client application, the steps of:

obtaining, via a client data acquisition interface, a set of timestamped time-series data values for an observed parameter from a process control and manufacturing information database;

rendering from the set of timestamped time-series data values, by a time-series data filter including at least one filtering operation performed by the client application, a filtered data set for plotting on the graphical display interface; and

rendering, by a display function of the client application, the filtered data set as a series of plotted points on a time-line graph.

27. The non-transitory computer-readable medium of claim 26 wherein the rendering step comprises selecting, by a filter, a set of representative data points, of a grouped set of time-stamped time-series data values associated with a designated time period, according to a value-based selection criterion.

28. The non-transitory computer-readable medium of claim 26 wherein the rendering step comprises performing, by a filter, the steps of:

applying a compression test sequence, upon receiving a next time-series data point, to at least the received next time-series data point, a held over data point and a last data point designated for plotting; and

designating, based on a time override, a candidate data point for plotting, without regard to whether the candidate point would be stored as a result of the applying step, upon receiving the next time-series data point.

29. The non-transitory computer-readable medium of claim 26 wherein the rendering step comprises applying, by a discrete value filter:

a deadband value test on a discrete time-series data point, and

a time period-based data point test on the discrete time-series data point.