D-Format
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D-format (or Sheffield format) by Ian Tyers is a format with meta data stored on the first 22 lines and then a sequence of ring width data - each one on a separate line - with oldest ring width value first and youngest value last. It is described in TRiDaS code repository[1]
Notes
Example
Here is an example file named "oak01a.d" from Martin Bridge:
oak01a 26 R 1 R 0 B made by Worker1 27/5/2010 ? ? V ? 0 0 N N beams oak01a ? QUSP ? D 123 145 164 182 146 124 96 104 108 114 135 123 89 114 119 127 138 145 118 120 122 136 147 152 138 120
In this case the dating is relative: line 3 is "R" ("A" implies absolute dating).
CDendro then adds 8000 to the starting date (year) specified on line 4, here giving 8001 as the starting year (oldest year) of the series.
This is a corresponding .rwl-file created by CDendro:
Untitl 1 Untitl 2 8001 8026 Untitl 3 oak01a 8001 123 145 164 182 146 124 96 104 108 oak01a 8010 114 135 123 89 114 119 127 138 145 118 oak01a 8020 120 122 136 147 152 138 120 999 oak01a #### oak01a oak01a #### made by Worker1 27/5/2010 oak01a #### oak01a