Last update 31 Oct 2013

Software for dendrochronology measurements and dating

CDendro and CooRecorder

CDendro is intended to help you crossdate wood samples towards each other! I.e. to make you know when a couple of trunks were cut in the forest. CooRecorder is intended to help you measure ring widths with your standard office scanner.

If you are interested in local history and want to find out when your old house was built or want to map out when various houses and other timber constructions in  your neighbourhood were built - then CDendro with CooRecorder is for you!

The CDendro & CooRecorder program package is affordable - it does not cost more than two books!

After more than 10 years of successive development, CDendro & CooRecorder have matured to be very competent programs used for e.g. dendrochronology, climate and forestry research all over the world. The package is also used at university courses for teaching dendrochronological methods.

On this site you will find adequate information to start dating wood! If  you are new to tree ring dating and have not yet used CDendro, please start by reading the section on "Dendrochronology, curve matching and mathematics" to get a basic understanding of the methods used.

Using your scanner for measurement

Gathering coordinate data from scanned pictures or objects. You can use your computer scanner to take interesting photos of things which can be placed on the top of your scanner. Such a photo can be displayed on your computer screen. You can enlarge the photo to see interesting details and you can write down coordinates of these details. It is a very tedious job to do this very manual registration if you have an interest in lots of data for later statistical analysis.

The CooRecorder program solves the problem by letting you just click on interesting points in your picture. The coordinates of these points are automatically written onto a file which you can later analyze with another program.

When do I use CooRecorder?

I do have this registration requirement for two of my own interests: Bee-keeping and Dendrochronological analysis.

Breeding for better bees. For bee keeping it is a matter of measuring characteristic data from bee wings. This data may tell if the wings come from bees of a pure breed or from a mixed up breed. Mixed up bees are often angry. A bee keeper tries to avoid angry bees, because they annoy his neighbours and he gets stung by them. Identifying a breed or a mix of breeds is also a matter of native breeding.

Dating old houses and other constructions of tree. For dendrochronological data it is a matter of measuring the width of tree rings. A long sequence of such widths from a tree sample can be used to find out when the tree was cut in the forest. I.e. to find out when an old house was actually built.

The CooRecorder program (Cybis Coordinate Recorder program) rids you of the tedious work of writing down bulks of coordinates by hand into a file for later statistical processing. With CooRecorder you can just click on successive points and have the coordinates automatically recorded.

For tree ring measurements CooRecorder has a built in pattern recognition mechanism which can detect ring borders automatically when the rings are clear and distinct. That feature can save you lots of boring work!

Disclaimer Cybis Elektronik & Data AB does not warrant the results you may obtain by using the CDendro or CooRecorder programs. In no event will Cybis be liable to you for any damages whatsoever arising out of the use or inability to use these programs.

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