| 摘要 |
Methods, mediums, and systems include use of a system manger application in a data processing system to manage a building automation system, to display a trend view chart on a graphical user interface, based on a trend view definition, showing the changing value of point data over time from a building automation system device, and to automatically display a comparative chart, based on the trend view definition, of historical point data from the building automation system device upon selection of a predefined comparative trend view button and an offset time period. |
