I have a problem with some .pos files that I have created, and I wondered if you would be able to give me some advice. I have a dataset of approximately 3600 cores, which I wanted to analyse using basal area increment. I measured the cores, and I have created chronologies using CDendro. One thing occurred to me though – when using ring widths and stem diameter to calculate basal area increment, I should take into account the thickness of the bark. So, I went back to my cores and used CooRecorder to measure the bark, as a separate series of .pos files. I thought I could then import them into CDendro, and create a .rwl file, thus giving me the bark measurements in a format that I could then look at in R. My problem is that the each bark file is a very short series, and that CDendro doesn’t seem to like dealing with .pos files which consist of just a few coordinates. ...

I’m aware that I am sort of abusing the programme – i.e. trying to make it do something that it was not designed for. However, do you know of any way that I can use my bark measurements? Essentially what I want is to get a sum length of measurements for each .pos file. Your webpage says that you use CooRecorder for measurements on bees, so I’m hoping that you have a way of using measurements that are not annual ring series.

To clarify:

• Each original .pos file referred to an image with 2 cores from one single tree.
• Therefore, each .pos file consists of a short series of widths covering 2 pieces of bark from 2 cores from the same tree.
• The "more than one point per line" data picking mode was used to jump from one core’s bark to the next, and crack marker used to deal with broken/fragmented bark.
• I need a sum of all widths in each .pos file.