Part 3 of the webinar is tomorrow. Wow that crept up fast! Thanks again to Bob, Don, American Forests, and Laser Technology, Inc. for making this happen. I've had takeaways from the previous two, and am sure to learn some new things tomorrow. There is no cost to attend and it's open to the general public. In addition, LTI is giving is away two Trupulse 360's per webinar, so good luck to attendees.
Here's an excerpt from Bob's post mentioning some of the topics for tomorrow:
dbhguru wrote:It will be the most mathematically intense of the webinars. That is not necessarily good. So, clarity is critical.
I plan to cover three ways to do the stick method (similar triangles), an in-depth look at the tangent method and its pitfalls, the sine method, the combination of sine and tangent, two versions of the External baseline method, and methods for estimating the impact of a combination of distance and angle errors on both sine and tangent calculations.
So far the reception to the webinars has been very positive. Hopefully, the third won't go astray. The challenge is to decode the mathematics without losing the insights that come from understanding the underlying mathematical models. Getting good at height is not just a matter of religiously following measuring protocols, but understanding the mathematical assumptions behind a technique or use of an instrument such as a hypsometer.
AF article: http://www.americanforests.org/bigtrees/forestry-measurement-tools/measurement-tools-techniques-webinar-series/