Foresters:  The following describes a forestry program I have written for the Palm OS.  It may be of interest to those using a Palm, Handspring, or similar PDA.  If you are interested, I'll be happy to send the program to you as an attachment to an e-mail message.

"The BfCordVol.prc stand-alone program for Palm OS does many of the calculations foresters need, including:

* timber volumes (International, Doyle, Scribner, cords) for individual trees or a stand of trees 
* centroid and importance tree volume (English or metric)
* log volume (cubic using centroid, Newton, Smalian, Huber, Bruce) (English or metric)
* log volume (board-foot using International, Doyle, Scribner)
* optimum plot size for a specified sampling error to minimize field time (English or metric)
* limiting distance for in-trees when point sampling (English or metric)
* plot radius (English or metric)
* side and diagonal of square plots (English or metric)
* dimensions of rectangular plots (English or metric)
* spacing and field time for square or rectangular grids and time difference (English or metric)
* sample size for cruises or estimating proportions

Background articles are found at: North. J. Appl. For. 33:124, J. For. 59:679, The Consultant 34(4):80, For. Sci. 31:587, For. Sci. 38:187.   The icon will say "TreeVol".   You must  put MathLib.prc, a free add-on, on your Palm, and that library is needed for many other programs anyway.  BfCordVol.prc is free for testing purposes and $15 if you decide to use it in your work (Harry V. Wiant, Jr., 113 Scenery Drive, Morgantown, WV 26505;e-mail: hwiant@juno.com).  No warranties are given or implied...none!!!  I hope you find it useful and will appreciate notification of problems or suggestions for improvements."
 

