Block integration

  •   INTEGRATE BLOCK...         Finds the area under the curve within the defined block.

    There is a choice of time units (seconds, minutes, hours, days, none) and baseline values.  The baseline for integration can be set at zero, the initial value of the block, the final value of the block, a user-specified value, or a proportional linear correction between initial and final block values.  Because of the different baseline options, this operation is considerably more versatile than the integration feature including in BASIC STATS, MINIMUM, MAXIMUM, and LEVEL. 

    In this example, the block is integrated using the zero baseline option with the time unit set as minutes.  Note that the start, end, and proportional options apply to the block defined with the left and right limit functions.

    Keep in mind that you need to pick the time unit that matches the rate unit used in the channel being analyzed, or the results will not be valid.  If you are using a rate unit for which a matching time unit is not available, you will need to adjust the results manually.  For example, if your data are in units of Kilojoules/day, you will need to divide the results by the factorial difference between days and whatever unit you select.  To continue with this example, if you set the units to 'hours' and your data are in KJ/day, you must divide the results by 24 (since there are 24 hours per day).  Similarly, if you set the units to 'minutes', you would need to divide by the number of minutes per day (1440).  This can be done conveniently using the 'Store' and 'Scale' buttons.

    If you select the "∑ plot" option (button in the bottom row), the computer generates a plot of the integrated values over time.  This plot will change whenever a new channel, right or left limit, or baseline option is selected.

    Additional considerations:

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