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Save Affine Table:

The AFFINE TABLE contains the depth offsets which must be applied to the ODP drilling depths (e.g. meters below seafloor, mbsf) to (re)build the composite depth scale. Depth-shift values are determined using the tie/correlate/and depth-shift features of the COMPOSITE tool (under PROCESS).

The AFFINE TABLE can be saved iteratively as the compositing is progressing. As each core is depth-shifted to correlate with other depth-shifted cores, the AFFINE TABLE is internally updated with the depth offset value applied to each core and a binary (Y/N) switch value to indicate if the core has been depth-shifted (=Y).

The AFFINE TABLE can be saved at any time and it is recommended that it be saved often. The AFFINE TABLE documents the depth offsets which have been applied to all cores within all holes of a given site; a logical naming convention (e.g Sitexxxx.aff.out) is recommended. When saved, it records the depth offsets which are needed to build the composite depth scale which is plotted in the left-hand window of the main screen and a binary (Y/N) switch value to indicate if the core has been depth-shifted.

When the AFFINE TABLE is saved, a verbose REPORT FILE (Sitexxx.aff.out.rpt) is also saved automatically to the same location as the AFFINE TABLE. This REPORT FILE contains information regarding the type of data which was read, what processing was done, and ODP ID and correlation information about the details of each composite and splice action on the current and equivalent (same site) previous dataset by the user.

See the AFFINE TABLE --> General Information regarding AFFINE TABLE file formats.

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updated: 30 April, 1996
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Bill Kamp