(41CV) "WOOD" Zig-Zag Transect Data Summary

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An extract from HP-41CV "WOOD" Program for Zig-Zag Transect Data Summary, USDA, SCS, Technical Notes, Forestry No. 7, May 1986 (14 pgs)

A. Program Description
This program calculates the percent of each species (up to 5) inventoried, average tree spacing, average breast height diameter, existing D+ spacing, desired D+ spacing, actual trees per acre, desired trees per acre, excess trees per acre and the percentage of good, fair and poor trees. The calculations are based on data collected using the zig-zag transect. Input data includes an abbreviated species type, distance between trees in feet, diameter at breast height (DBH) of individual trees in inches and the individual tree condition of good, fair or poor.
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The results of the program will be accurate and representative of the unit being measured, provided that transects are located in typical parts of the forest stand.
More than one transect may be needed per unit.
The zig-zag transect information is to be used for planning purposes only. Do not attempt to use for yield or valuation estimates…
B. Equipment
This program is designed to run on the HP-41 series calculator with or without a printer attached. The HP-41 should have at least 319 registers of available memory for the program to run properly. The standard HP printer (82143A) or the HP-IL printer (82162A) may be used. The HP card reader (82104A) must be used to load the program by magnetic cards into the calculator memory. The HP tape drive (82161A) may be used to load the program from mini cassette tape.…
C. Instructions to Load Program …
D. Instructions to Run Program …
E. User Instructions …
F. Program Limits …
G. Example Problems …
H. Program Listing …
I. System Configuration …
J. Program Algorithms …

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