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- Close: This tab acts like a button and closes the control panel. The control panel can be opened again by clicking any of the other four tabs.
- Shift Cores: This tab has controls for depth shifting, which are described in the Depth shift cores section.
- Splice Cores: This tab has controls for splicing, which are described in the Construct the splice section.
- Display Preferences: This tab has general data display controls (Fig. 2.2-2)
- Data Filters: This tab offers data filtering options, including decimate, smooth and cull (Fig. 2.2-3).
Data Filters tab
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Correlator offers three fundamental options to filter the data for the purpose of displaying them (Fig. 2.2-2a). The original data are still kept in memory and can be displayed again by deleting the filters.
To filter the data:
- Select the data type you want to filter (Fig. 2.2-2b).
- To decimate the selected data type, click the Edit button in the Decimate area (Fig. 2.2-2c).
- Enter a number in the Show every <N> points to limit the display to every Nth data point.
- Click Apply.
- To smooth the selected data type, click the Edit button in the Gaussian Smoothing area (Fig. 2.2-2d).
- Select the type of rolling window: Points or Depth (cm)
- Enter the number of points in
- Select the display option: Smoothed only or Original & Smoothed
- Note: you can change the color of the smoothed trace in the Display Preferences > Set Colors
- Click Apply.
- Select the type of rolling window: Points or Depth (cm)
- To cull the selected data type, click the Edit button in the Cull area (Fig. 2.2-
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- 2e).
- The first type of cull is to Cull <x> cm from core tops.
- Enter the interval in cm to be culled from each core in the data set.
- The second type is to
- The first type of cull is to Cull <x> cm from core tops.
- Data filters are applied to the data from all cores for a specified data type. For a more specific filtering of known intervals with severe core disturbance, etc., you have the option to apply a file with those intervals specified in the Correlator Downloader application, at the time of data download.
- At this time, data culling can only be specified for top of cores (to remove data from “exotic” material washed down from higher up in the hole). A future version will include culling from core bottoms (“exotic” material “sucked in” when the piston core was removed) and culling from section ends (“edge effect”).
- Some odd behavior has been observed when deleting a cull filter under certain circumstances, and this has not yet been repaired (no user pressure). An easy workaround is to re-load the data.
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Figure 2.2-2. Three data filtering options on the Data Filter tab: Decimate, Gaussian Smoothing, and Cull. Shown is a 9-point Gaussian filter applied to the magnetic susceptibility data whereby both original and smoothed (white trace overlay) are plotted. The filters can be edited or deleted.
a bc d e
Display Preferences tab
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