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2D - Decimation Window
You can decimate 2D lines by trace, shotpoint, or distance. Control the output
by allowing only integers or multiples of a specified number, set a reference
point from which to start the decimation, and select to include the first and last traces.
- Select to decimate 2D lines
by trace, shotpoint, or distance under Decimate By.
- Enter a decimation factor for the decimation interval.
If you select to decimate by distance and enter a decimation factor of
‘50’, then WinPICS selects a
trace approximately every 50 m. If you select to decimate by trace and enter a decimation factor of ‘2’, then WinPICS selects every second trace.
- Select one of three options for the Output Restriction to define valid numbers for decimation results:
- No
Restriction
- Only
Integer Locations – Prevents numbers such as 99.5, 103.5, 107.5, etc.
- Only
Locations Multiple Of – Allows locations that are multiples of
values entered in the Multiple Of field.
- Using the previous example, if we select only integer locations, then
the closest trace to 50 m that is an integer will be selected. If we select
only locations that are a multiple of 5, then only traces that are closest
to the 50 m and are a multiple of 5 will be selected.
- Select one of three options
for the Decimation Reference to define the starting point
for decimation:
- First
Valid Location – Begins location selection with the first trace
in the file that meets the above criteria.
- Last
Valid Location – Begins location selection with the last trace
in the file that meets the above criteria.
- User
Defined Location – Allows you to enter a number in the Reference field for the starting location.
For example, a reference of 101 would begin selection at trace/shotpoint/distance
101.
- If the Force End Points check box is selected, the first
and last traces are accepted even if they do not fall within the output restriction. For example, if you decimate by shot point in conjunction
with only locations multiple of 5, then decimation would yield 101, 105,
110, etc.
What do you want to do?