Revert "[doc] Update filter grammar"

This reverts commit 5deb941.
pevans-gfz · Jul 31, 2024 · bfc8001 · bfc8001
1 parent 5deb941
commit bfc8001
Showing 1 changed file with 0 additions and 16 deletions.
diff --git a/doc/base/filter-grammar.rst b/doc/base/filter-grammar.rst
@@ -197,11 +197,6 @@ parentheses, e.g. :py:func:`DIFF()<DIFF()>`, or without, e.g.
       v1 = s;
 
 
-.. py:function:: DT()
-
-   The sampling interval in seconds of the data. Each input sample is replaced with the current
-   sampling interval. This filter is most useful in combination with other filters.
-
 .. py:function:: INT([a = 0])
 
    Integration filter realized as a recursive IIR (infinite impulse response) integration
@@ -318,11 +313,6 @@ parentheses, e.g. :py:func:`DIFF()<DIFF()>`, or without, e.g.
    :param type: The data type: either 0 (displacement), 1 (velocity) or 2 (acceleration)
 
 
-.. py:function:: SR()
-
-   The sampling rate of the data. Each input sample is replaced with the current
-   sampling rate. This filter is most useful in combination with other filters.
-
 .. py:function:: STALTA(sta, lta)
 
    A STA/LTA filter is the ratio of a short-time amplitude average (STA) to a
@@ -347,12 +337,6 @@ parentheses, e.g. :py:func:`DIFF()<DIFF()>`, or without, e.g.
    :param on: STA/LTA ratio defining the start of the time window for fixing LTA.
    :param off: STA/LTA ratio defining the end of the time window for fixing LTA.
 
-.. py:function:: SUM(timespan)
-
-   Computes the sum of previous samples within a *timespan*.
-
-   :param timespan: Time timespan to compute the sum in seconds
-
 .. py:function:: WA([type = 1[,gain=2080[,T0=0.8[,h=0.7]]]])
 
    The simulation filter of a :term:`Wood-Anderson seismometer`. The data format