Differences

This shows you the differences between two versions of the page.

--- wiki:diff [2017/05/08 06:07]
admin created
+++ wiki:diff [2024/10/01 04:39] (current)
admin
@@ Line 5: / Line 5: @@
 Usage:
-''DIFF(variable, options)'' - see below for description.
+''DIFF(variable, options, [days],[minutes],[min],[max])'' - see below for description.
+Parameters:
+variable - Variable name to use
+options - Type of diff (see below)
+days - optional number of days to lookup  before selected day
+mins - optional number of minutes to offset by
+min - minimum value, will result in 0 if it is below this value
+max - maximum value, will result in 0 if it is above this value
 ===== Generic Variables (per device type) =====
-''DIFF('INC1_AE'), 5''
+''DIFF('INC1_AE', 5)''
 Get the difference for the selected period
@@ Line 34: / Line 49: @@
 |7 | AT_END_DATE - value at the end of the selected date range |
 |8 | PERIOD_CUMULATIVE - value between start of period and range element (in a graph) |
+|9 | FULL_MONTH - Difference between 1st and last day of month for selected date |
+The third parameter is an optional one and lets you specify a number days.  This is subtracted from the currently selected period to allow you to graph historic data alongside current data.
 ===== Example =====
 Show a cumulative value for data within a period:
-''(DIFF('delta0_wh',8)''
+''(DIFF('delta0_kwh',8)''
+The graph for cumulative values since period start looks like this:
+{{:wiki:diff_cumulative.png?500|}}
+''(DIFF('delta0_kwh',5)''
+The graph for period for the same variable looks like this:
+{{:wiki:diff_period.png?500|}}
+Get the solar generation for one year ago (365 days):
+''(DIFF('inverter1_AC_Total_kWh',0,365)''

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