Writing LATE/EARLY wood data to

Writing LATE/EARLY wood data to Heidelberg format for export to dplR

Writing LATE/EARLY wood collection data also to Heidelberg format for export to dplR:

Season wood (late-/early-wood) .pos files can be added to an empty collection and saved using the .fil format. Ring width data can then be extracted in Heidelberg (.fh) or Tucson (.rwl) format by using e.g. Collections/Save current collection.../as Heidelberg formatted file or .../as Tucson .rwl file ... while -in older versions of CDendro- Latewood and Earlywood data could be extracted only to .rwl collections (i.e. only to Tucson format) using /Save Late and Early wood in .rwl ... format. This implied a limitation to users working with the Heidelberg format because they have long collection member names like "JEZ03_LADE_01A" which cannot be written to a .rwl file if not first converted to a shorter variant.

There is now a new command Save Late and Early wood in .rwl or Heidelberg .fh format. If such a Latewood .fh file is then run also through the Heidelberg STRIPPED filter (Save current collection/as STRIPPED Heidelberg .fh file...) the resulting collection can be imported into the dplR system. (The filter removes the separate .fh file header and inserts a DATEBEGIN property in each collection member while also removing other properties unknown to dplR.) All this allows for quick export of e.g. latewood .pos data from CooRecorder to e.g. dplR for futher processing.

How to create a latewood collection for import in dplR:

Start by adding your seasonwood .pos files in synchronized positions as members to an empty collection file like this

Check the synchronization by running "Test towards rest of collection". When all members are properly synchronized you get only high CC/TT values as shown above. Save your collection of .pos-files as e.g. someName.fil

Create a first latewood collection: Extract late wood data from that collection of .pos data files by saving the collection as "Collections/Save Late and Early wood in .rwl or Heidelberg .fh format/Write LATE wood of collection as Heidelberg .fh file" Select a proper name as e.g. someName_L.fh

To check your data, close all files and then open someName.fil and someName_L.fh and compare their members.

Note: The curves you see from members of someName_L.fh are only latewood, while the curves you see from members of someName.fil have a ringtype of either Full, Early or Late depending on how you select. With "Full" selected as reference for a sample from someName.fil the Latewood data from the corresponding sample in someName_L.fh will have less wide (smaller) ring width values. To see this difference you have to uncheck "Ind. ring-w scaling" (Individual ring width scaling) so that you get the same scaling as for your reference curve. This is demonstrated in the following picture.

Full ring width curve (blue) vs Latewood curve (green). (Show normalized was unchecked to get rid of the two upper curves.)

Adapt your first latewood collection to dplR: To adapt your latewood data to dplR, run your someName_L.fh file through the filter "Collections/Save current collection../..as STRIPPED Heidelberg ... for Export to dplR" and name the file e.g. someName_L_STRIPPED.fh