Search found 84 matches

by Lars-Ake
29 Sep 2009, 18:50
Forum: CDendro General Discussion
Topic: Multi-radii cross correlation
Replies: 2
Views: 16971

Re: Multi-radii cross correlation

I am building a chronology from living trees based on a big number of trees (>100 per species). I do have 4 radii from each of them. So when i do a cross correlation to see which are best match, radii from the same trees always match up even if the sum by stem button is checked. It would be lot of ...
by Lars-Ake
11 Jul 2009, 22:42
Forum: CooRecorder General Discussion
Topic: The development (test) version of CooRecorder
Replies: 5
Views: 20189

Re: The development (test) version of CooRecorder

I have updated CooRecorder a little to make it more easy to collect curvedata: http://www.cybis.se/forfun/dendro/curvetowidth/pic/connectpoints.gif Also, when there are multiple curves (e.g. two) in the same diagram, it is now possible to set out labels in CooRecorder at e.g. a certain year in both ...
by Lars-Ake
27 Jun 2009, 21:16
Forum: CDendro General Discussion
Topic: The Development version of CDendro
Replies: 5
Views: 21816

Re: The Development version of CDendro

There is now a new development version of CDendro available for customers who want to test it.
/Lars-Åke
by Lars-Ake
21 May 2009, 15:49
Forum: CooRecorder General Discussion
Topic: How to see the year number of a certain ring
Replies: 1
Views: 10793

Re: How to see the year number of a certain ring

There is now still a new version where every 10th year number is automatically plotted.

Image
by Lars-Ake
20 May 2009, 18:43
Forum: CooRecorder General Discussion
Topic: How to see the year number of a certain ring
Replies: 1
Views: 10793

How to see the year number of a certain ring

In response to a request from Igor Drobyshev, there is now a mechanism which makes it possible to see the corresponding year number for a certain ring. This is useful when you know of some pointer years - known to be related to very thin or very wide rings - and you want to see which rings they corr...
by Lars-Ake
05 May 2009, 21:22
Forum: Dendrochronology in general
Topic: Besancon Corridor method
Replies: 0
Views: 15996

Besancon Corridor method

Here is a short preliminary description of the Besancon corridor method:
http://www.cybis.se/forfun/dendro/corridor/
by Lars-Ake
04 May 2009, 22:04
Forum: CDendro General Discussion
Topic: The Development version of CDendro
Replies: 5
Views: 21816

Re: The Development version of CDendro

There is now still another new development version of CDendro - this time named CDendro 7.2 - available for download and testing. Various detrending and normalization methods have been added to the program during a long time. I have now rewritten these methods so they are all handled in the same way...
by Lars-Ake
13 Apr 2009, 15:32
Forum: Dendrochronology in general
Topic: Fooled by the normalization method and some narrow rings
Replies: 0
Views: 16092

Fooled by the normalization method and some narrow rings

While analyzing the data in the file CO20050101-LCE-AjC.txt at the French CNRS database I observed a number of quite high Baillie/Pilcher and Hollstein based TTest correlation values which were not considered as correct datings. An analysis revealed that it was caused by a combination of VERY narrow...
by Lars-Ake
04 Apr 2009, 22:46
Forum: Dating reports, measurements, rwl-files etc.
Topic: CNRS Database
Replies: 6
Views: 26073

Re: CNRS Database

Hi Ale and everybody! I've now looked into the Besancon files again. I think I can program a read-in mechanism for these files without getting further information. Of course it would be fine to know more, though many examples are usually the best way to go. About Becanson normalization: The filter o...
by Lars-Ake
03 Apr 2009, 21:24
Forum: Dating reports, measurements, rwl-files etc.
Topic: CNRS Database
Replies: 6
Views: 26073

Re: CNRS Database

Thanks Ale! This is indeed interesting data. I think that it is all oak of some type. The format is quite new to me and I have to write some sort of input filter for CDendro. Though I would be happy if I knew more about the format! The data with negative values are probably based on the "Besanc...